History of United Airlines
United Airlines is the third largest airline in the world, with 86,852 employees (which includes the entire holding company United Continental Holdings) and 721 aircraft. It was the brainchild of William Boeing and emerged from his consolidation of numerous carriers and equipment manufacturers from 1928 to 1930.
- 1 History
- 1.1 Beginnings
- 1.2 Expansion into a national carrier
- 1.3 De-regulation
- 1.4 Strike of 1985
- 1.5 Record-setting flight
- 1.6 Employee Stock Ownership Plan
- 1.7 Turn-of-the-21st-century developments
- 1.8 September 11, 2001 attacks
- 1.9 Bankruptcy and reorganization
- 1.10 Beyond Chapter 11
- 1.11 2009 recession, fuel efficiency issues and new jet orders
- 1.12 Merger with Continental
- 1.13 2013 fine
- 1.14 2015 grounding of flights
- 1.15 2017 passenger removal controversy
- 1.16 2018 planned growth through 2020
- 2 Predecessors
- 3 Brand history
- 4 Former hubs
- 5 Historical fleet
- 6 References
- 7 External links
United Airlines was the creation of aviation pioneer William Boeing who started out in the airplane business in 1916. His Boeing Airplane Company, as it was then called, achieved the first international postal delivery in 1919 and he went on to establish United Aircraft Corp. in 1928. It was this UAC that acquired mail and passenger service operator Pacific Air Transport on 1 January 1928, then, renamed Boeing Aircraft & Transport Co., merged with Pratt & Whitney Aircraft in early 1929 to form United Aircraft and Transport Corporation (UATC). UATC acquired America's first scheduled passenger services carrier Stout Air Services on 29 April 1929, the nation's first scheduled service (mail only) operator Varney Air Lines in early 1930 and, finally, National Air Transport (a large Chicago-based mail-only carrier) on 7 May 1930. On March 28, 1931, UATC formed the corporation United Air Lines, Inc. to manage its airline subsidiaries. Thus United Airlines makes the claim to be the oldest commercial airline in the United States by dint of its Varney acquisition.
Varney was founded by Walter Varney in Boise, Idaho. Varney's chief pilot, Leon D. "Lee" Cuddeback, flew the first contract air mail flight in a Swallow biplane from Varney's headquarters in Boise, Idaho, to the railroad mail hub at Pasco, Washington, on April 5, 1926 and returned the following day with 200 pounds of mail. Varney Airlines' original 1925 hangar served as a portion of the terminal building for the Boise Airport until 2003, when the structure was replaced.
Through its string of successful acquisitions, by 1930, United Air Lines provided coast-to-coast passenger and mail services. It took 27 hours to fly the route, one way. Boeing Air Transport hired a registered nurse, Ellen Church, to assist passengers. United claims Church as the first airline stewardess.
Following the Air Mail scandal of 1930, the Air Mail Act of 1934 banned the common ownership of manufacturers and airlines. UATC's President Philip G. Johnson was forced to resign and moved to Trans-Canada Airlines, the future Air Canada. UATC was broken into three separate companies. UATC's manufacturing interests east of the Mississippi River became United Aircraft (the future United Technologies), while its manufacturing interests west of the Mississippi became Boeing Airplane Company. The airline interests became United Air Lines. The airline company's new president, hired to make a fresh start as airmail contracts were re-awarded in 1934, was William A. Patterson, who remained as president of United Airlines until 1963.
Expansion into a national carrier
This section needs expansion with: more information about events in the 1970s.. You can help by adding to it. (February 2011)
United's early routes, formed by connecting air mail routes, was east-to-west from New York City via Chicago and Salt Lake City to San Francisco, and north-south along the West Coast. The early connections became the basis of United hubs in Chicago and San Francisco and later in Denver and Washington, D.C. These remain United's principal hubs.
United introduced the Boeing 247 in 1933; for the first time passengers could fly across the US without an overnight stop or changing planes. That summer the fastest flight left Newark at noon (probably EST) and arrived San Francisco at 0655 PST after eight stops; fare was $160 one-way, equal to $2,868 in today's value.
On the night of October 10, 1933 a United Boeing 247 exploded in mid-air and crashed near Chesterton, Indiana, killing the seven people aboard. Investigation revealed that the explosion was caused by a nitroglycerin bomb placed in the baggage hold. The United Airlines Chesterton Crash is believed to be the first proven case of air sabotage in commercial aviation history. No suspects or motives were ever found.
During World War II United-trained ground crews modified airplanes for use as bombers, and transported mail, material, and passengers in support of the war effort. The airline was quite busy covering the need for air transport across the United States during the war. Its fleet of fifty aircraft were utilized at a rate of more than thirteen hours per day by 1945 (well above the pre-war rate of less than nine hours per day), flying 100,000 miles per day. Post-war United benefited from new technologies (like the pressurized cabin which permitted planes to fly above the weather) and a boom in customer demand for air travel. This was the period in which Pan American Airways revived its Pacific route system that would later be acquired by United.
In 1954, United became the first airline with flight simulators that had visual, sound and motion cues for training pilots. Purchased for US$3 million (1954) from Curtiss-Wright, these were the first modern simulators for training of commercial pilots.
On November 1, 1955 United Airlines Flight 629, flying from Stapleton Airport in Denver to Portland, Oregon, was bombed, killing all 39 passengers and five crew members on board the Douglas DC-6B. The bomb was planted by Jack Graham who put the device in his mother's luggage to collect on her life insurance policy. Graham was arrested, tried, and was executed a year after the explosion.
In the late 1950s, three United planes were lost in mid-air collisions that killed everyone on both aircraft involved. On June 30, 1956, Flight 718 collided with a Trans World Airlines Lockheed L-1049 Super Constellation over the Grand Canyon in what was then the world's deadliest commercial airline disaster. In 1958, Flight 736 crashed in southern Nevada after colliding with a USAF F-100 Super Sabre fighter jet. And on December 16, 1960, Flight 826 hit another TWA Super Constellation over New York City. These accidents helped pave the way for modern Air Traffic Control. Also in 1958, United received its first Douglas DC-8, its first jet aircraft.
United merged with Capital Airlines on June 1, 1961, displacing rival American Airlines as the world's second largest airline behind Aeroflot of the Soviet Union. The merger with Capital resulted in United operating the British-manufactured Vickers Viscount which was the only mainline turboprop aircraft ever flown by the airline. Also in 1961, United began operating French-manufactured Sud Aviation Caravelle jetliners and was the only U.S. airline ever to operate the Caravelle in scheduled passenger service. In 1968 the company reorganized, creating UAL Corporation with United Airlines as a wholly owned subsidiary.
United took delivery of their first Boeing 747s in August 1970, initially operating them on longer routes within the United States. A year later, United, along with American, were the launch customers for the McDonnell Douglas DC-10, which for many years served as a workhorse in both airlines' fleets and others around the world.
United Airlines is the only airline to have operated Executive One, the designation given to a civil flight carrying the U.S. President. On December 23, 1973 then President Richard Nixon flew aboard a United DC-10 flight from Washington Dulles to Los Angeles. White House staff explained that this was done to conserve fuel by not having to fly the usual Boeing 707 aircraft used for Air Force One. In keeping with the practice of having two aircraft available at all times during Presidential travel, an Air Force aircraft followed in case of emergency.
In August 1940 United scheduled flights to 37 airports. In August 1953, 66 airports on United and 51 on Capital; in May 1968 United flew to 91 and in November 1978 to 90 airports.
United sought overseas routes in the 1960s, but the Transpacific Route Case (1969) denied them this expansion; it did not gain an overseas route until 1983, when they began flights to Tokyo from Portland and Seattle. United became a proponent of deregulation due to its perception that regulation, as it then existed, was a major constraint on United's ability to profitably grow. After years of focused work to bring about deregulation, the 1978 Airline Deregulation Act became law.
In 1985, United agreed to buy the ailing Pan American World Airways entire Pacific Division, Boeing 747SPs, and L-1011-500s, and flight crew staffs for $750 million. By late 1986, United flew to 13 Pacific destinations, most of which were purchased from Pan Am.
Economic turmoil during the 1970s which led to "stagflation", labor unrest, and the pressures of the 1978 Airline Deregulation Act greatly hampered the industry and United, which incurred losses at a time when it was also undergoing changes at the top of both United Airlines and its parent company UAL Corp. Some changes were due largely to the retirement of long term senior management members as well as performance driven changes at the very top in 1969 and again in 1985 following the pilot strike.
In 1982, United was the launch carrier for the Boeing 767-200, receiving its first 767-200s on August 19.
Strike of 1985
On May 17, 1985, United's pilots went on a 29-day strike claiming the CEO, Richard Ferris, was trying to "break the unions." They used management's proposed "B-scale" pilot pay rates as proof. American Airlines already had a non-merging B-scale for its pilots. Ferris insisted United had to have pilot costs no higher than American's, so he offered United pilots a "word-for-word" contract to match American's, or the same bottom line numbers. The United ALPA-MEC rejected that offer. The only choice left, to achieve parity with American's pilot costs, was to begin a B-scale for United's new-hire pilots.
Ferris wanted that B-scale to merge in the captain's ranks, which was more generous than American's B-scale, that never merged at all. But, the ALPA MEC insisted they merge in the new pilot's sixth-year with the airline. In the final hours before the strike, nearly all issues had been resolved, except for the time length of the B-scale. It appeared that would be resolved too as negotiations continued. ALPA negotiators delivered a new counter-proposal at 12:20 am in an effort to avoid the strike. However, MEC Chairman Roger Hall, who was hosting a national teleconference from the Odeum (a convention center in the Chicago suburbs) with F. Lee Bailey, declared the strike was on at 12:01 am, on May 17, without further consulting the negotiators, some of whom believed they could find agreement on all contract terms, if the negotiations were allowed to continue. Moments before the ALPA announced strike deadline, they began a "countdown of the final 30 seconds from Chicago" (the Odeum teleconference). Doing that made it impossible to extend the strike deadline, so that the final issues could be resolved without a strike.
Mr. Ferris changed United's parent company's name from UAL Corporation to Allegis in February 1987 but the name change was short lived. Following Ferris' termination by the board, Allegis divested its non-airline properties in 1987 and reverted to the name UAL Corp. in May 1988.
In 1988, using a Boeing 747SP-21 purchased from Pan American World Airways, United flew a two-stop around-the-world flight to raise money for the Friendship Foundation, to which the plane was 'loaned'. The flight made a very short-lived record for fastest flight around the globe; within a month, a Gulfstream IV business jet had broken Friendship One's record.
Employee Stock Ownership Plan
The decline of Pan American World Airways offered opportunities; in 1991 United purchased Pan Am's routes to London Heathrow Airport. In direct negotiations with the UK government United also obtained rights to fly to Heathrow from Chicago. However, the aftermath of the Gulf War and competition from low-cost carriers led to losses of US$332 million in 1991 and US$957 million in 1992. In 1992 United purchased now-defunct Pan Am's Latin American and Caribbean routes and Miami gates, but United allowed months to elapse between Pan Am's demise and its launch of service.
In 1994 United's pilots, machinists, bag handlers and non-contract employees agreed to acquire 55% of company stock in exchange for 15% to 25% salary concessions. The flight attendants voted to not participate in the deal, and at the beginning some wore buttons saying "we just work here." The Employee Stock Ownership Plan (ESOP) made United the largest employee-owned corporation in the world. United used the opportunity to create a low-cost subsidiary, Shuttle by United, in an attempt to compete with low-cost carriers.
United used its employee-ownership in its marketing communications, with slogans such as "the employee-owners of United invite you to come fly the friendly skies," "we don't just work here," and "thank you for calling United Airlines; please hold and one of our owner-representatives will be with you shortly."
The financial outcomes of the ESOP were decidedly uneven for different players. As part of ESOP agreement, United CEO Stephen Wolf resigned and took a consulting job with Lazard Freres, the very investment company he had hired to advise United's board during the ESOP buyout process. Stewart Oran, the key legal advisor to the pilots' union, received a $5.5 million package to join the management of the new employee-owned company as legal counsel after the ESOP was formed. United's unions, having larger voice in running the company, later successfully bargained for significant pay increases, but the effect was only short-term. The rank and file employees were locked into their stock, which got wiped out in the eventual bankruptcy. It was around this period (in 1993) that United introduced its grey and blue color scheme. It had been criticized that the color scheme blended with the darkness during nighttime operations.
In 1989, United orders the then-new Boeing 747-400.
In 1993, United phased out the 'Saul Bass' livery and introduced the 'Battleship Gray' livery to their fleet.
In 1997, United co-founded the Star Alliance with Air Canada, Lufthansa, Scandinavian Airlines and Thai Airways. That same year, United opened its Southwest US hub at Los Angeles International Airport.
In 1995, United became both the launch customer of and first airline to operate the Boeing 777, and had significant input on its design.
In 1997 John Cooperstock, an engineer for Sony Corp., and an assistant professor at McGill University in Montreal, Quebec, created untied.com, a website chronicling complaints about service on United, including from Premier Class customers. The name untied.com transposes two of the letters of the name "United." Kevin Simpson of the Denver Post said in 2000 that "The Untied.com phenomenon mirrors the online trend in consumer activism that has caught on with the disgruntled flying public this summer travel season."
In 1998, Delta Air Lines and United introduced a marketing partnership that included a reciprocal redemption agreement between SkyMiles and Mileage Plus programs and shared lounges. This scheme allowed members of either frequent flier program to earn miles on both carriers and utilize both carriers' lounges. Delta and United attempted to form an even cozier codeshare relationship, but this deal was effectively killed by ALPA. The marketing partnership ended in divorce in 2003, but paved the way for a future alliance with US Airways.
In May 2000, United announced plans to acquire competitor US Airways in a complex deal valued at $11.6 billion. The offer drew immediate scorn from consumer groups and employees of both airlines. By the following year, regulatory sentiment was against the deal, and United withdrew the offer just before the Department of Justice barred the merger on antitrust grounds in July. The two airlines subsequently formed an amicable partnership that led to US Airways' entrance into the Star Alliance.
May 2000 also saw a bitter contract dispute between United and its pilots' union. The pilots wanted their pay restored to the levels that existed prior to the pay cuts and concessions that were taken to fund the ESOP. Planning for the busy summer season, United had counted on its pilots flying overtime. However, the pilots could not be forced to work overtime, and most pilots refused to fly the extra hours. Although United knew they would have to cancel numerous flights if this were to happen, they did not hire new pilots to make up for the potential shortage. Over the summer, United had to cancel a large portion of its schedule at its major hubs. Eventually, CEO Jim Goodwin and the rest of the management had to get the pilots back in the cockpits and quickly offered the pilots a 48% increase over four years with up to 28% upfront.
September 11, 2001 attacks
As part of the September 11, 2001 attacks, two of the four planes hijacked were United planes. One aircraft was N612UA, a Boeing 767–200 operating as United Airlines Flight 175, flown into the South Tower of the World Trade Center. The other was N591UA, a Boeing 757–222 operating as United Airlines Flight 93, which crashed in rural Pennsylvania after the passengers fought back against the hijackers, and was suspected to have been directed towards the United States Capitol building according to the DHS.
Bankruptcy and reorganization
With a strong presence on the West Coast, United benefited from the dot-com boom which boosted traffic (especially premium traffic) to the San Francisco hub. This increase was only temporary and when the bubble finally burst, United was in a worse position than before because it had failed to keep costs under control, possibly due to giving its pilots pay raises of up to 28% in the summer of 2000. Coupled with a battered network, the post-9/11 decline in air travel and skyrocketing oil prices, the company lost $2.14 billion in 2001 on revenues of $16.14 billion. In the same year United applied for a $1.5 billion loan guarantee from the federal Air Transportation Stabilization Board established in the wake of the September 11 attacks. When the IAM union failed to approve the loan guarantee—while all other unions approved it—the application was rejected in late 2002 and the company was forced to seek debtor-in-possession financing from commercial sources to cover the expected future losses. United made several attempts to obtain the government loans, even enlisting several congressmen and senators for help. The government rejected the application claiming United "could probably obtain the $2 billion in financing it needs to emerge from protection without a federal loan guarantee".
Unable to secure additional capital, UAL Corporation filed for chapter 11 bankruptcy protection in December 2002. The ESOP was terminated, although by then its shares had become virtually worthless. Blame for the bankruptcy has fallen on 9/11, which triggered financial crisis in all the major North American airlines, coupled with the economic slowdown that was underway.
United continued operations during its bankruptcy, but was forced to cut its costs drastically. Tens of thousands of workers were furloughed, and all city ticket offices in the US closed. The airline canceled several existing and planned routes, and eliminated its entire Latin American gateway and flight crew base at Miami International Airport after March 1, 2004. Furthermore, they reduced their mainline fleet from 557 (before 9/11) to 460 aircraft.
At the same time, the airline continued to invest in new projects. On November 12, 2003, it launched a new low-cost carrier, Ted, to compete with other low-cost airlines. In 2004 it launched its luxury "p.s." (for "premium service") service on re-configured Boeing 757-200s from JFK Airport in New York City to Los Angeles and San Francisco. The service was targeted to business customers and high-end leisure customers in the coast-to-coast market. In February 2004, the airline introduced the new Blue and White livery, commonly called the 'Rising Blue' livery, with the Blue Tulip on the tail to coincide with a new advertising campaign.
Financial pressure on the airline was heavy. The SARS epidemic in 2003 depressed traffic on United's extensive Pacific network. The spikes in the price of jet fuel ate away remaining profits United made. United implemented several fare hikes on overseas routes, citing rising fuel costs, in 2004 and 2005. Two days after its triumphant first flight to Vietnam, United announced that it would cut U.S. flight capacity by 14% after the holidays and add more international flights, which were more profitable.
United took advantage of its Chapter 11 status to negotiate hard-to-cut costs with employees, suppliers, and contractors, including cancellation of feeder contracts with United Express carriers Atlantic Coast Airlines (which became Independence Air) and Air Wisconsin (which became a US Airways Express carrier).
Most controversial of all, however, was the 2005 cancellation of its pension plan, the largest such default in U.S. corporate history. It renegotiated its contracts with the pilots' and mechanics' unions and the Association of Flight Attendants for lower pay. Criticism was also leveled at the CEO, Glenn Tilton, for demanding pay cuts from employees while receiving the highest salary of any major U.S. airline CEO.
Originally slated to exit bankruptcy protection after 2½ years in the third quarter of 2005, United requested yet another extension in light of record-high fuel prices. On August 26, 2005, the bankruptcy court extended the airline's exclusive right to file a reorganization plan to November 1, although it also stated firmly this extension would be the last. United announced at the same time it had raised $3 billion in exit financing and filed its Plan of Reorganization, as announced, on September 7, 2005.
The bankruptcy court approved the restructuring plan on January 20, 2006, clearing the way for United to exit bankruptcy on February 1, 2006, and finally return to normal operations.
Beyond Chapter 11
On December 9, 2004, the airline made history when UA869, operated by a Boeing 747–400, landed at Ho Chi Minh City (formerly Saigon), Vietnam. The scheduled flight from San Francisco via Hong Kong (SFO–HKG–SGN) was the first by a U.S. airline since the end of the Vietnam War, when Pan Am halted service shortly before the fall of Saigon in 1975.
United's management called for consolidation in the industry and looked for a suitor in 2006. The Wall Street Journal revealed in late 2006, that Continental Airlines was in merger discussions with United. A deal was not "certain or imminent," with the talks being in a preliminary state. In the interim, it increased its ties with British carrier BMI and Aloha Airlines. In April 2007, United and British carrier BMI announced that they would 'effectively merge their trans-Atlantic operations'. The merged operations would have begun in March 2008, however Lufthansa's takeover of BMI preempted the two carrier's plans when BMI's transatlantic flights were terminated. United's May 2007 acquisition of an equity stake in its longtime partner Aloha Airlines was short-lived as Aloha ceased operations in March 2008. On June 14, 2007, CFO Jake Brace said his company is still looking to tie the knot with a suitable merger partner.
In the years following United's exit from bankruptcy, two large financial firms, Bank of America and Fidelity Investments, accumulated shares to become the second largest owner with an 11 percent stake in the company. As mentioned earlier, the industry environment was ripe with pressures to merge and consolidate. Pardus Capital Management LP, a hedge fund that owned 7 million shares of Delta and 5.6 million shares of United, called for the two carriers to merge. This action sent shares of both airlines up but this was short-lived and became moot because Delta wedded Northwest.
The surge in jet fuel prices caused disruption to United's impending start of non-stop long-haul services. Though the FAA had already awarded the SFO to Guangzhou, China to United, they postponed the launch citing high fuel prices. Other long-haul city pairs, such as its 2009 application to fly between Los Angeles and Shanghai (which began May 2011) were denied by the FAA.
During this time of turmoil brought on by external forces, United explored options to reestablish its financial footing and raise capital. These changes included:
- Divesting of the Maintenance, Repair and Overhaul operations at SFO.
- Spinning off the cargo division.
- Spinning off the Mileage Plus frequent flier program.
These spin-offs and divestitures have not come to fruition.
This section may need to be rewritten entirely to comply with Wikipedia's quality standards. (January 2010)
On February 19, 2008, Westin Hotels & Resorts announced a refreshed partnership with United where Westin will provide products from their Heavenly Bed line on p.s. routes.
In May 2008, the American Customer Satisfaction Index scored United Airlines second-last among US-based airlines in customer satisfaction with a 21% decrease since the study began in 1994 and an 11% decrease over the previous year.
On June 12, 2008, United announced it would charge $15 for the first checked bag, becoming the second United States airline to do so, the first being American Airlines. The charges, while not affecting every United flight, were created in an effort to offset high fuel prices.
On September 8, 2008, the price of UAL shares fell by nearly 99% in fifteen minutes to $0.01 US amid rumors of another bankruptcy, before NASDAQ temporarily halted trading. The rumors were traced to an old story on the South Florida Sun-Sentinel website about the 2002 bankruptcy being picked up by Google News and subsequently presented by Bloomberg LP as breaking story. The share price subsequently recovered most of its value. On February 1, 2006, United emerged from Chapter 11 bankruptcy protection under which it had operated since December 9, 2002, the largest and longest airline bankruptcy case in the history of the industry.
On April 27, 2008, it was reported that UAL Corporation and US Airways Group, Inc. were in the advanced stages of merger negotiations as well. Sources stated that a merger was expected to be announced within two weeks of the report. United pilots vociferously rejected the proposal and vowed to fight it. Star Alliance co-founder Lufthansa CEO Wolfgang Mayrhuber threw his support behind a marriage of partner carriers United and US Airways.
On June 4, 2008, United announced it would close its Ted unit and reconfigure them for a return to mainline configuration, to compensate for the removal of United's Boeing 737s that were to be retired. That retirement plan included Boeing 737s and Boeing 747s, reducing the mainline fleet from 460 to 359 aircraft and furthering the airline's goal of cutting domestic capacity by 15 percent. On January 6, 2009, Ted ended operations converting its entire fleet into United mainline fleet. All Ted flights were changed into United mainline flights.
In January 2009, United announced a code-sharing agreement with Aer Lingus for flights between Washington Dulles and Madrid. Aer Lingus would operate the service, which is permitted under recent open skies agreements between the US and EU.
In 2009, United entered into an extensive partnership with Continental Airlines. This partnership included codeshare and frequent flyer agreements. As a part of the agreement, Continental left SkyTeam and joined the Star Alliance. Elite members of each airline's frequent flyer program received benefits on both airlines.
As of May 2009, the U.S. Department of Transportation rated UAL eleventh among 19 US carriers in lost, damaged, delayed or pilfered baggage with 3.67 complaints per 1,000 passengers. In July 2009, a viral music video, "United Breaks Guitars" was released about a disputed damaged baggage claim with the airline. United said it would like to use the video as a staff training tool to help the company improve its internal "corporate culture" relating to its customer relations in that area of its services.
On October 28, 2009, United flew its final Boeing 737 flight, as UA Flight 737. The retirement flight flew from Washington-Dulles to San Francisco via Chicago-O'Hare, Denver, and Los Angeles, United's main hubs. United's 737 retirement was particularly significant, as it was the U.S. launch customer of the 737 family in 1967, and operated variants of the type for 42 years. While United retired the 737s they already had in 2009, the airline ended up regaining 737s with the merge with Continental.
2009 recession, fuel efficiency issues and new jet orders
In April, 2009, United eliminated the ability to call customer service, leaving reservations agents as the only reachable contact for the airline.
In June 2009, United asked manufacturers Boeing and Airbus to submit proposals to sell the airline up to 150 jets in a winner-take-all competition. United is taking advantage of declining sales at both plane makers to reap steep price reductions; the large size of this prospective order will also influence pricing. The Wall Street Journal cited the average ages of four types of jets in United's fleet as follows:
- Boeing 747-400 – 13 years
- Boeing 777-200ER – 10 years
- Boeing 767-300ER – 14 years
- Boeing 757-200 – 17 years
Merger with Continental
On April 16, 2010, United resumed merger talks with Continental. The board of directors of both Continental and UAL Corporation's United Airlines reached an agreement to combine operations to create the world's largest airline on May 2, 2010. The combined carrier would take the United Airlines name but use Continental's logo and livery. The carrier would be headquartered in Chicago and Continental CEO Jeff Smisek will be CEO of the combined airline. The merger was contingent upon shareholder and regulatory approval.
The Continental-United merger was approved by the European Union.
Continental and United Airlines revealed a new logo, based on Continental's logo, to be used for the post-merger United. On August 27, 2010, the US Justice Department approved the Continental-United Merger. This is partially because United and Continental agreed to lease 18 take-off and 18 landing slots at Newark Liberty International Airport to Southwest Airlines. On September 17, 2010, United shareholders approved the merger deal with Continental Airlines. Both carriers planned to begin merging operations in 2011 to form the world's biggest carrier and expected to receive a single operating certificate by late 2011. The merged airline would use Continental's single operating certificate (SOC) (using the "United" name), while those of United and Air Micronesia would be surrendered. On the other hand, the merged airline would use United's maintenance certificate and allow Continental's maintenance certificate to lapse.
On October 1, 2010, UAL Corporation (the parent company of United Airlines) completed its acquisition of Continental Airlines and changed its name to United Continental Holdings, Inc. The two airlines remained separate until the operational integration was completed in mid-2012. United and Continental announced that United Mileage Plus would be the remaining frequent flyer program of the two airlines.
The airline received a single operating certificate from the FAA on November 30, 2011.
On March 31, 2013, United and Continental merged into a single airline. The integration of the two airlines was structured so that United Airlines, Inc. merged into Continental Airlines, Inc., with Continental being the surviving corporate entity and a wholly owned subsidiary of UAL Corporation. Continental then changed its name to United Airlines, Inc. The merged airline opted to retain the United name in order to conserve the built-in brand equity of pre-merger legacy United Airlines.
The United States Department of Transportation fined United $1.1 million for lengthy tarmac delays at O'Hare International Airport in July 2012. It was the largest fine yet for leaving passengers stuck on planes. The fine was for 13 flights carrying a total of 939 passengers delayed longer than three hours during severe thunderstorms and lightning on July 13, 2012. Some flights were as little as 2 minutes over the limit, but one was held 4 hours and 17 minutes. Two United Express regional flights had inoperable lavatories during part of the delays.
2015 grounding of flights
On Tuesday, June 2, 2015, all United Airlines flights were grounded.
On Wednesday, July 8, 2015, all United Airlines flights were grounded again for over 2 hours after a computer glitch. The glitch was blamed on a router failure.
2017 passenger removal controversy
On April 9, 2017, Dr David Dao was forcibly removed from United Express Flight 3411, sustaining injuries in the process. After the plane had been fully boarded, four members of staff presented themselves for the flight. The company offered compensation to seated passengers to give up their seats, but had no volunteers, and four selected passengers were then told they must leave the plane. Dr Dao refused this instruction and law enforcement officers were called. The activity was video-recorded by several passengers and officials, and the resultant publicity and subsequent handling of the incident by United Airlines was a PR disaster.
2018 planned growth through 2020
In January 2018, United plans to grow its company by adding between 4% and 6% to its passenger capacity this year and maintain that growth through 2020; this news caused all U.S. airline stocks to fall in value. Also, United in 2019 applied for more routes to Tokyo Haneda Airport, from its 6 U.S. hubs that didn't fly there. Most of these hubs will be replacing the Tokyo Narita route with Haneda. 
United Airlines is a combination of a number of air carriers that have merged with each other starting in the 1930s, with the most recent being Continental Airlines (which had previously merged with or acquired several airlines during its history) thus reflecting changes in focus of both United and the U.S. air transport market.\
United was originally formed in 1931 from a merger of four airlines:
- Boeing Air Transport (formed in 1927)
- National Air Transport (formed in 1925)
- Pacific Air Transport (formed in 1926)
- Varney Air Lines (formed in 1926)
Other predecessor air carriers that form the present United Airlines include:
- Capital Airlines (formed in 1936, merged into United Airlines in 1961)
- Continental Airlines (formed in 1934, merged into United Airlines in 2010)
- Air Micronesia (formed in 1968 as a division of Continental Airlines, later became Continental Micronesia and merged into Continental Airlines in 2010)
- New York Air (formed in 1980, merged into Continental Airlines in 1987)
- Pioneer Airlines (formed in 1939, merged into Continental Airlines in 1955)
- People Express Airlines (PEOPLExpress) (formed in 1981, merged into Continental Airlines in 1987)
- Frontier Airlines (formed in 1950, merged into People Express Airlines in 1986)
- Texas International Airlines (formed in 1944 as Trans-Texas Airways (TTa), Continental Airlines merged into Texas Air in 1982, with Texas Air changing its name to Continental)
- Pan American World Airways (Pan Am) (Formed in 1927, Pacific Division acquired by and merged into United in 1985, Heathrow Airport international traffic rights acquired by and merged into United in 1990. Pan Am was later forced to declare bankruptcy in 1991)
Many of these acquisitions and mergers were completed by Continental Airlines when this carrier was under the ownership and control of Texas Air Corporation from 1982 to 1987. During that time period, New York Air and Texas International Airlines (which were already owned by Texas Air Corporation before this company acquired Continental) were merged into Continental. Texas Air Corporation subsequently acquired PEOPLExpress Airlines (which had previously acquired Frontier Airlines) and then folded these air carriers into Continental as well. As for United, before merging with Continental it had acquired Capital Airlines in the 1960s and had also purchased Pan Am's Pacific Division as well as Pan Am's transatlantic route rights into Heathrow Airport during the 1980s.
United adopted a red, white and blue shield logo in 1936, but its use varied widely and was eventually abandoned altogether in the early 1970s. Before 1974 and after the use of the shield logo was discontinued, United advertisements and signage usually advertised to customers to "Come Fly the Friendly Skies of United" in a font identical to the "United" font on the "Friendship" livery of the early 1970s.
In 1973, the airline commissioned designer Saul Bass to develop a new logo and livery. At the time, there was no real logo for the airline and Bass noted that the brand direction was not clearly evident. The "tulip" logo of colored stripes representing overlapping letter "U"s was in use beginning 1974, with only slight modification, until the Continental merger. The "Rainbow" (or "Saul Bass") livery, which was the first to feature the "tulip", had a primarily white fuselage, with red, orange and blue stripes along the "cheatline". This livery remained in use for 19 years, with a slight update in 1988 that moved the colored stripes further down the fuselage to allow the "UNITED" font to be larger than before. Marketing during this time continued the "Fly the Friendly Skies" slogan, and it was during this era that United acquired the rights to use Gerswhin's "Rhapsody in Blue", which started to be heard in broadcast advertisements. Other than the re-introduction in 1979 of the single word "AIRLINES" (once again appearing as "UNITED AIRLINES") in advertising and printed materials, the Bass branding would remain until early 1993.
At the request of then-CEO Stephen Wolf, in 1993 United completely revised its branding and livery, with the collaboration of CKS Group, to a primarily grey and dark blue fuselage, with blue stripes on the tail. A custom Times New Roman font, reading "UNITED AIRLINES" in white, replaced Saul Bass's previous lettering style. The familiar "tulip" logo remained, although slightly smaller. As a homage to the previous livery, narrow red, orange and blue stripes appeared between the grey and the dark blue. This so-called "Battleship" livery was intended to project a more business-like, global image for the airline, which was rapidly expanding internationally. Indeed, the words "Worldwide Service" were displayed near the front of the aircraft. Naturally, signage and printed materials reflected the change, often using the light blue on dark blue striped design of the aircraft tail-fin, along with the newly updated font and, of course, the "tulip."
In 1997, United commissioned Pentagram to update the brand. Pentagram soon decided to keep the "tulip", in view of its strong brand-recognition. Pentagram designed a new "UNITED" font that appeared in advertisements, signage and printed material, but did not appear on the aircraft themselves until United's next livery re-design. This arrived on February 18, 2004, when the "Rising Blue" (or "Blue Tulip") livery was introduced, intended to signal a fresh start once the company emerged from bankruptcy protection. As it turned out, United's bankruptcy took longer to resolve than expected; consequently the new branding was actually launched two years sooner. The fresh livery featured a white upper fuselage, replacing the dark grey of the previous design, and used a lighter shade of blue for the aircraft belly, tail and engines. In an echo of the previous two liveries, a series of progressively lighter blue lateral stripes lay between the white upper fuselage and the blue of the aircraft underside. The aircraft tail-fin featured an enlarged and cropped version of the "tulip," shaded with a bluish tint.
On May 3, 2010, it was announced that United and Continental Airlines would merge. The combined airline took the United name but used the Continental Airlines "globe" identity and livery, designed in 1991 by the Lippincott company.
Mark Bergsrud, the head of the new United Airlines's marketing department, said that the new logo reflected United's worldwide network and the airline's efforts to attract corporate clients. Bergsrud said, "It fits who we are. We are not a niche player like Hawaiian, whose livery reflects the islands. Having some local flair is harder for an airline like us. Do we want to stand out? Absolutely. But spiffy liveries just have to fall to a lower level of priority." After United announced its new logo, supporters of the previous United logo started a Facebook group called "Save the United Airlines Tulip" in order to convince the airline to change its logo back to the stylized U, or "tulip." The decision was also said to be unpopular with many marketing experts and graphic designers, claiming that the "tulip" had stronger brand recognition and was a stronger mark than the Continental globe. Much criticism was directed at CEO Jeff Smisek, who flatly admitted that he and former United CEO Glenn Tilton personally came up with the "new" brand and livery themselves, with no outside input or any consulting with either company's marketing departments.
In conjunction with the newly adopted livery, in August 2010 the "United" lettering was updated in accordance with the previous Continental typeface, but presented entirely in upper-case lettering and slightly adjusted to bear a resemblance to United's own previous style. The merger was approved in September 2010, and the two companies merged on October 1, 2010.
United unveiled an updated livery on April 24, 2019. The new livery retains the white upper fuselage and gray belly. But now the "United" typeface is larger, there is a blue wavy cheat-line (derived from the modified livery worn by the 787 and 737 MAX fleet), the engines and tail are painted in the same shade of blue as the 2004-2010 livery, and the globe on the tail is slightly enlarged and now in a lighter shade of blue.
Two United aircraft in regular service utilize heritage paint schemes. N75436 is a Boeing 737-900ER acquired in the Continental merger, painted in the 1950s Continental "Blue Skyways" livery. The other is N475UA, a legacy United Airbus A320 sporting United's 1970s "Stars and Bars" livery. The aircraft was previously painted in Ted colors and also operated with Blue Tulip paint from 2009 to the end of 2010, when it was painted into its current livery.
Another eleven aircraft, including five Boeing 777-200ERs, one Boeing 767-400ER, one Boeing 767-300ER, one Boeing 757-200, two Boeing 737-800s and one Boeing 737-700, are painted in the Star Alliance livery.
The early slogan "The Main Line Airway," emphasizing its signature New York-Chicago-San Francisco route, was replaced in 1965 with "Fly the Friendly Skies." The "friendly skies" tagline was used until 1996, yet revived on September 20, 2013. Other United Slogans include:
- "The Extra Care Airline (1963–1964)
- "When you're friendly you do things for people" (1971)
- "The Great Wide Way to New York" (1971–1972)
- "Your Land is Our Land" (1972)
- "The Friendly Skies of your land" (also known as "Mother Country", 1973–1976)
- "You're the boss" (1976–1977),
- "United we fly" (1977–1978)
- "United all the way" (1979–1980)
- "That's what friendly skies are all about" (1980)
- "You're not just flying, you're flying the Friendly Skies" (mid-1980s)
- "Official Airline of the 1984 Olympic Games" (1984 Olympic Games)
- "From the ground up, rededicated to giving you the service you deserve. Come fly the friendly skies" (Late 1980s)
- "Come fly the airline that's uniting the world. Come fly the Friendly Skies" (late 1980s)
- "Come fly our Friendly Skies" (The early ESOP years)
- "Airline of the U.S. Olympic Team" (Used during the 1988 Olympic Games)
- "United. Rising." during the late 1990s
- "Come fly Chicago's hometown airline. Come fly the friendly skies."
- "Feel United ... Be United ... Worlds United ... Stay United ... United" (the late 1990s)
- "It's important for the human race to stay United"
- "Life is a journey – travel it well; United"
- "We Are United" following the September 11 attacks; used until 2004
- "Relax, Stretch Out" with the rollout of EconomyPlus
- "It's time to fly" (2004–2010) This was used for the animated commercials (voiced over by Robert Redford), banners, and magazine advertisements of the campaign first unveiled during Super Bowl XXXVIII. The campaign was reintroduced in August 2008 when United premiered five new TV commercials during the 2008 Summer Olympic Games.
- "Let's fly together" (2010–2013)
- "Before they move us, we move them."/"Proud to fly Team USA for over 30 years." (2012–Present) (Used during the 2012 Summer Olympic Games to promote United as the official airline of the U.S. Olympic Team for more than 30 years. Matt Damon did a voice over for the United Team USA commercials, which premiered during NBC's telecast of the Olympic Games on July 27, 2012.)
- "Fly the Friendly Skies" (2013–present)
- Cleveland Hopkins International Airport – United Airlines maintained a secondary East Coast hub at Cleveland until 1985, when it began a move to Washington Dulles. By the time the transition finished in 1987, Continental Airlines had established Cleveland as its fifth hub and first Midwest hub. United maintained the hub for four years following the United-Continental merger. On February 1, 2014, United announced it was dehubbing Cleveland due to lack of profitability and its proximity to the Chicago–O'Hare hub.
- Miami International Airport – with the acquisition of Pan Am's international routes from Miami to Europe and Latin America in 1991, Miami became a hub for the airline. In May 2004, MIA was dehubbed and its flights were transferred to Chicago.
- Tokyo Narita International Airport – The ninth-largest hub for both destinations and flights and United's hub for Asia. Narita was the smallest of United's six hubs before the United-Continental merger. In its 2017 Annual Report United no longer listed Tokyo-Narita as a hub.
- Stapleton International Airport – Both United and Continental operated hubs at Denver International Airport's predecessor airport, with both hubs active from 1972 until the airport closed in 1995. When Stapleton was replaced with DIA, United transferred operations, but Continental discontinued its Denver hub.
|Boeing 40A||1927||1937||Launch customer|
Operated as Boeing Air Transport; also operated by Varney Air Lines
|Boeing 80A||1928||1934||Unknown||Launch customer|
Operated as Boeing Air Transport
|Boeing 247||1933||1942||Unknown||Launch customer|
All 59 of the base model were built for United Airlines
|Boeing 377 Stratocruiser||Unknown||1954||Unknown|
|Boeing 720||1960||1976||Boeing 727||Launch Customer|
|Boeing 727-100||1963||1993||Boeing 737-500|
|Boeing 727-200||Unknown||2001||Airbus A320 family|
|Boeing 737-200||1968||2001||Airbus A320 family|
|Boeing 737-300||1986||2009||Airbus A320 family|
|Boeing 737-500||1990||2009||Airbus A320 family
Boeing 737 Next Generation
|United's original 737-500 fleet had been retired by 2009.|
More 737-500s were inherited from the merger with Continental Airlines and these were retired by May 2013.
|Boeing 747-100||1970||1999||Boeing 747-400
|Boeing 747-200||1987||2000||Boeing 747-400
|Acquired from Pan American World Airways|
|Boeing 747SP||1985||1995||Boeing 747-400
|Taken over from Pan American World Airways|
|Boeing 747-400||1989||2017||Boeing 777-300ER
|The last United 747, dubbed the "Friendship" – a reference to United's original branding for its DC-10 and 747-100 fleet in the 1970s – was taken on a hub to hub tour around the United States, before taking a final ticketed flight from San Francisco to Honolulu, reprising the inaugural scheduled flight of a United Boeing 747.|
|Boeing 767-200||1982||2005||Boeing 757-200||Launch Customer.|
|Boeing 767-200ER||2011||2013||Boeing 757-200
|Inherited from Continental Airlines|
|Douglas DC-3||1936||Unknown||Convair 340|
|Douglas DC-6||1947||1970||Unknown||Fleet included DC-6 and DC-6B aircraft|
|Douglas DC-8||1959||1992||Boeing 757-200||Largest DC-8 operator|
Fleet included stretched DC-8 "Super 60" series and re-engined "Super 70" series aircraft.
The re-engining of its Super DC-8 fleet was carried out in-house.
One crashed in 1960 as Flight 826.
|Ford Trimotor||Unknown||Unknown||Boeing 247||Operated in 1931 on a transcontinental route between New York City and San Francisco.|
|Lockheed L-1011 TriStar||1986||1989||Taken over from Pan American World Airways|
|McDonnell Douglas DC-10||1971||2001||Boeing 777-200/-200ER||Launch Customer|
Fleet included original DC-10-10 variants and DC-10-30 variants
One crashed in 1989 as Flight 232.
|Sud Aviation Caravelle||1961||1970||Boeing 727
|Only US operator of the Caravelle in scheduled passenger service|
|Laird Swallow J-5||Unknown||Unknown||Unknown||Single seat biplane used to carry US Air Mail (CAM 5) by predecessor Varney Air Lines.|
|Vickers Viscount||1961||1969||Boeing 727
Boeing 737 Original
|Former Capital Airlines aircraft.|
Only mainline turboprop aircraft type ever operated by United Airlines.
- Davies, R.E.G., Airlines of the United States since 1914, 1998, Smithsonian Institution Press, p. 75.
- "United Airlines – Timeline (entry for March 28, 1931)". Archived from the original on 2011-09-19. Retrieved 2011-12-10.
- History of Flight in the US Seventy-Five Years United
- "Chasing the Sun – Ellen Church". PBS. May 15, 1930. Retrieved May 3, 2010.
- "American National Business Hall of Fame, ANBHF W.A. "Pat" Patterson". Anbhf.org. Archived from the original on 2010-08-13. Retrieved May 3, 2010.
- "Calculate the value of $160 in 1933". Retrieved 13 April 2017.
- "Working Overtime". Flight International: 497. 10 May 1945. Retrieved 5 July 2016.
- "Airline Pilots Fly Anywhere in the world - Without Leaving the Ground." Popular Mechanics, August 1954, p. 87.
- "Sabotage: The downing of Flight 629 – The Crime Library – The Crime library". Archived from the original on 2014-04-03. Retrieved 13 April 2017.
- http://www.timetableimages.com, June 1, 1961 United Air Lines system timetable
- Roach and Eastwood, 2003, p. 332
- "President / Commercial Airline Flight - Vanderbilt Television News Archive". tvnews.vanderbilt.edu.
- 1951–75 from Handbook of Airline Statistics (biannual CAB publication); 1981–2000 from IATA's World Air Transport Statistics
- Shut down for 16-day strike December 1975
- Short strike
- Associated Press (August 22, 1985). "United Airlines to Buy Pan Am Pacific Division". Los Angeles Times. Retrieved 2013-11-20.
- "Pilot Labor History-1985 Archived 2011-10-01 at the Wayback Machine" Strike thwarted attempt to break pilots' union, alpa.org
- "ALPA-MEC letter 6–7–85" Letter to all UAL pilots, explaining details of the last minute negotiations
- "Hard Landing" 1995, by Thomas Petzinger, Chapter 10
- "ALPA-MEC letter 5–17–85" Letter to all UAL pilots, explaining the remaining issues when the strike was called
- "UAL letter, 5–21–85" Letter to all UAL pilots, explaining the remaining issues when the strike was called
- "Airline Pilot Magazine, July 1985" Standing United, pages 8–15
- "United's Parent Is Again UAL." The New York Times.
- "United Once More." TIME. 2
- "United Airlines Friendship One Sets Short-Lived World Record-Setting Flight". Archived from the original on 2010-12-05. Retrieved 2011-12-10.
- "United Airlines – Timeline". United.com. Retrieved May 3, 2010.
- USA Today, "Workers took pay cut while others got rich," July 12, 1995.
- "Ask the pilot – Salon.com". Archived from the original on 2011-06-06. Retrieved 2011-12-10.
- Schmeltzer, John. "UNITED AIRLINES FIT TO BE UNTIED BY UNFRIENDLY WEB SITE." Chicago Tribune. September 19, 1997. Business p. 2. Retrieved on April 7, 2013. "United Airlines' Internet nightmare is located at www.untied.com, a Web site that United tried to persuade its creator to shut down because of alleged trademark infringements. The site collects and prints, in detail, complaints about service on the world's biggest airline. Open for a little more than four months, the site was created by Jeremy Cooperstock, an engineer who works for Sony Corp. It has collected dozens of complaints about what it calls rudeness, misinformation, incompetence, special-needs mistreatment and refund problems. It even contains complaints by United's best customers, its Premier Class fliers."
- Simpson, Kevin. "More travelers let fly on airline gripe site Untied.com a top destination for the disgruntled." Denver Post. September 17, 2000. Page M01. Retrieved on April 7, 2013. "Traffic on Untied.com, a Web site that three years ago transposed two letters of the company name and started fielding flier complaints and employee beefs, spiked dramatically during August. Jeremy Cooperstock, an assistant professor at Montreal's McGill University who launched the site,[...]" - Available on General OneFile and LexisNexis.
- "Delta Air Lines and United Airlines to end marketing relationship". Airline Industry Information. July 29, 2003.
- "FrequentFlier.com – News & Analysis". Archived from the original on 2008-12-27. Retrieved 2011-12-10.
- Zuckerman, Laurence (April 24, 2001). "A Leapfrog Pattern in Pay Pacts for Airline Pilots". The New York Times. Retrieved May 3, 2010.
- Mendis, Sean (November 23, 2002). "United, ATSB and Chapter 11". Airwhiners.net. Retrieved May 13, 2013.
- "United's Bid For Loan Guarantee Rejected". The Washington Post. Retrieved May 3, 2010.
- "Business | United Airlines files for bankruptcy". BBC News. December 9, 2002. Retrieved May 3, 2010.
- DeCarlo, Edited by Scott (21 April 2005). "CEO Compensation". Retrieved 13 April 2017.CS1 maint: Extra text: authors list (link)
- "Press release detail". united.com. December 9, 2004. Retrieved May 3, 2010.
- "UAL, Continental Discuss Merger As AirTran Presses Bid for Midwest." Carey, S.; Trottman, M.; Berman, D. K. The Wall Street Journal. December 13, 2006.
- "United and Continental Discussing Possible Merger." Sorkin, A. R. and Bailey, J. The New York Times. December 12, 2006.
- United-BMI pact would 'effectively merge their trans-Atlantic operations' – Today In the Sky – USATODAY.com Archived May 7, 2008, at the Wayback Machine
- Lagorce, Aude. "Bmi, United Airlines to form transatlantic alliance". Retrieved 13 April 2017.
- United Airlines Takes Minority Stake in Aloha Airlines now in bankruptcy (Star Bulletin: May 4, 2007)
- United Airlines Seeking Merger (USA Today: June 14, 2007)
- News, Bloomberg. "Fidelity parent triples stake in United – The Denver Post". Retrieved 13 April 2017.
- Hedge fund calls for Delta-United merger – South Florida Business Journal:
- "Delta: No active merger talks with United". Archived from the original on November 16, 2007. Retrieved December 10, 2011.
- Mandaro, Laura. "Delta Air says it's not in merger talks with United". Retrieved 13 April 2017.
- United Chief Chases Change, Chicago Tribune, October 19, 2007.
- "Airline Industry Scores". American Customer Satisfaction Index. Archived from the original on May 13, 2008. Retrieved May 15, 2008.
- "UAL includes Canada in fee to check 1 bag". The Star. Toronto. June 13, 2008. Retrieved May 26, 2010.
- Griffin, Greg (June 27, 2008). "United jettisons DIA route to London". Denver Post.
- "Southwest to Add Flights; United, Northwest Cut Overseas Routes". Bloomberg. June 26, 2008.
- "US Airways Terminates Skycaps AHN - August 8, 2008".
- Ovide, Shira (September 12, 2008). "Single Web Hit Led to UAL Glitch, Tribune Says". Wall Street Journal. Retrieved September 11, 2008.
- "USATODAY.com - United's bankruptcy tab: $335 million-plus in fees". Retrieved 13 April 2017.
- Report: United, US Airways in 'Advanced Talks' to Merge – FOXBusiness.com Archived January 5, 2009, at the Wayback Machine
- Crawley, John (April 29, 2008). "UAL pilots leader pans possible merger with US Air". Reuters.
- "ATW: Lufthansa's Mayrhuber sees value in United-US Airways merger but not investment".
- "Bloomberg.com: Worldwide". Bloomberg.
- Pogatchnik, Shawn (January 23, 2009). "United, Aer Lingus boost trans-Atlantic pact". USA Today. Retrieved May 3, 2010.
- Air Travel Consumer Report Archived 2011-10-15 at the Wayback Machine Office of Aviation Enforcement and Proceedings, Aviation Consumer Protection Division, U.S. Department of Transportation, July 2009.
- "Band takes United Airlines baggage handling to task on YouTube" The Chicago Tribune, July 11, 2009.
- Singer's revenge on United: A hit song United Press International July 9, 2009.
- "HugeDomains.com - CultureMd.com is for sale (Culture Md)". Retrieved 13 April 2017.
- United Plans Huge Jet Order, Wall Street Journal, June 4, 2009, p. 1.
- AP (May 2, 2010). "Continental, United airlines to combine". New York Post. Retrieved May 4, 2010.
- [dead link]
- "New Visual Brand Identity for the New United Airlines". Archived from the original on 2010-01-15. Retrieved 2011-12-10.
- Johnsson, Julie (27 August 2010). "Justice Department approves United and Continental airlines merger". Retrieved 13 April 2017 – via LA Times.
- "UAL and Continental shareholders approve merger". 17 September 2017. Retrieved 13 April 2017 – via Reuters.
- "United, Continental to merge operations in 2011". The San Francisco Chronicle. September 20, 2010.
- Flint, Perry. (September 6, 2010) United to transition to Continental operating certificate as part of merger. ATW Online. Retrieved on December 16, 2010.
- "Pilots: United gets single operating certificate". Retrieved 13 April 2017.
- "Form 8-K for UNITED CONTINENTAL HOLDINGS, INC." (Archive) Securities and Exchange Commission. April 3, 2013. "On March 31, 2013, United merged with and into Continental, with Continental continuing as the surviving corporation of the Merger and as a wholly owned subsidiary of UAL. Upon the closing of the Merger on March 31, 2013, Continental's name was changed to "United Airlines, Inc." (the "Survivor"). "
- Edwards, Jim. Why United-Continental's Bizarre New Mashup Logo Is a Work of Genius. May 24, 2011. OBTAINED FROM: http://www.cbsnews.com/news/why-united-continentals-bizarre-new-mashup-logo-is-a-work-of-genius/
- "United Hit With Record $1.1 Million Fine in Tarmac Delays". Bloomberg. Retrieved 25 October 2013.
- "Archived copy". Archived from the original on 2015-09-01. Retrieved 2015-06-02.CS1 maint: Archived copy as title (link)
- staff, CNBC com (8 July 2015). "United restoring flights after worldwide ground stop". Retrieved 13 April 2017.
- CNN, Christina Zdanowicz and Emanuella Grinberg. "Passenger dragged off overbooked United flight". Retrieved 13 April 2017.
- Airline stocks tumble after United unveils expansion plan LA Times. Retrieved January 24, 2018
- "Corporate And Legal History Of United Airlines And Its Predecessors And Subsidiaries 1925–1955" Chicago: United Airlines. 1965
- Davies, R.E.G. "Airlines of the United States since 1914". Washington, D.C.: Smithsonian Institution Press. 1972
- Fisher, David; William Garvey "The Age of Flight: A History of America’s Pioneering Airline" Greensboro, NC: Pace Communications, 2001
- ERIC WEINER (1990-08-10). "Lorenzo, Head of Continental Air, Quits Industry in $30 Million Deal". New York Times - Webcache.googleusercontent.com. Archived from the original on 2013-01-25. Retrieved 2012-12-25.
- "Continental Airlines – 1934". Fabulair. 2011-11-30. Retrieved 2012-12-25.
- Mouawad, Jad. "On Jet Exteriors, a Parade of Vanilla", The New York Times. December 23, 2011. Retrieved on December 24, 2011.
- Smith, Aaron. "United and Continental to merge", CNNMoney, May 3, 2010. Retrieved May 17, 2017.
- Cubz72 (6 October 2007). "1984 United Airlines Commercial #5". Retrieved 13 April 2017 – via YouTube.
- publisher73 (5 October 2007). "United Airlines commercial". Retrieved 13 April 2017 – via YouTube.
- "YouTube – United Airlines TV CM 2000 Theme". Youtube.com. 2008-04-08. Retrieved 2011-12-25.
- United Hub team (2013-09-20). "United's new brand campaign reinterprets 'Fly the Friendly Skies'". United Airlines. Archived from the original on 2013-09-29. Retrieved 2013-09-22.
- "United Airlines drops Cleveland as Hub Airport". Associated Press. Retrieved 2015-06-22.
- "United Plans Flight, Staff Cuts in Miami". South Florida Business Journal. Retrieved 2015-06-22.
- "Corporate Fact Sheet". United Airlines. Retrieved 2015-06-22.
- "List of United Airlines Hubs". USA Today. Retrieved 2015-06-22.
- "United Continental Holdings, Inc. and Subsidiary Companies. United Airlines, Inc. and Subsidiary Companies. Annual Report on Form 10-K For the Year Ended December 31, 2017". United Airlines. December 31, 2017. Retrieved 2018-05-05.
- "Continental to Shutter Pilot, Attendant Bases in Denver". Chicago Tribune. July 8, 1994. Retrieved 2015-06-22.
- "Retired fleet". United.com. Archived from the original on September 9, 2011. Retrieved 2011-12-25.
- Walt Bohl Boeing model 40 and its descendants[permanent dead link]
- Henry M. Holden (1991). The Boeing 247: the first modern commercial airplane. Tab Books.
- "United retired its last three B737-500s by end of May". ch-aviation. Retrieved 5 June 2013.
- "United Airlines retires its last B767-200". ch-aviation. Retrieved 31 May 2013.
- http://www.timetableimages.com, June 1, 1931 United Air Lines system timetable
- AirFleets.net United Airlines
- "united.com - Swallow". October 3, 2002. Archived from the original on October 3, 2002. Retrieved April 10, 2017.CS1 maint: BOT: original-url status unknown (link)
- Eastwood A.B. and Roach J.R. Jet Airliner Production List Volume 1 - Boeing. 2003. The Aviation Hobby Shop. ISBN 0-907178-97-9.