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Ontario International Airport

Coordinates: 34°03′22″N 117°36′04″W / 34.05611°N 117.60111°W / 34.05611; -117.60111
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Ontario International Airport
Terminal entrance
Airport typePublic
Owner/OperatorOntario International Airport Authority[1]
ServesInland Empire and Greater Los Angeles metro areas
LocationOntario, California
Hub for
Focus city forAmazon Air
Elevation AMSL944 ft / 288 m
Coordinates34°03′22″N 117°36′04″W / 34.05611°N 117.60111°W / 34.05611; -117.60111
FAA airport diagram
FAA airport diagram
Direction Length Surface
ft m
08L/26R 12,198 3,718 Concrete
08R/26L 10,200 3,109 Concrete
Statistics (2023)
Total Passengers6,430,033
Aircraft operations104,923
Total cargo (tons)752,199

Ontario International Airport (IATA: ONT, ICAO: KONT, FAA LID: ONT) is an international airport two miles east of downtown Ontario, in San Bernardino County, California, United States, about 38 mi (61 km) east of downtown Los Angeles and 18 mi (29 km) west of downtown San Bernardino. It is owned and operated under a joint-powers agreement with the city of Ontario and San Bernardino County.[1]

The airport covers 1,741 acres (705 ha) and has two parallel runways.[2][5] It is the West Coast air and truck hub for UPS Airlines and is a major distribution point for FedEx Express. As of September 2018, ONT has more than 64 daily departures and arrivals.[6] Since Ontario's longest runway (runway 8L/26R) is longer than three of the four runways at Los Angeles International Airport (LAX), it is an alternate landing site for large aircraft destined for LAX.[7]



In 1923, a landing field was established east of Central Avenue (3 mi (4.8 km) west of the current airport) on land leased from the Union Pacific Railroad. The airfield was named Latimer Field after an orange-packing company next to the airstrip. An airport was built there by one of the first flying clubs in Southern California, the Friends of Ontario Airport. In 1929, the city of Ontario purchased 30 acres (12 ha), now in the southwest corner of the airport, for $12,000 (equivalent to $213,000 in 2023),[8] and established the Ontario Municipal Airport.

In 1941, the city bought 470 acres (190 ha) around the airport and approved construction of new runways, which were completed by 1942, with funds from the Works Progress Administration. The 6,200 ft (1,900 m) east–west runway and the 4,700 ft (1,400 m) northeast–southwest runway cost $350,000 (equivalent to $6,530,000 in 2023).[9] On 27 February 1942, an Army Air Corps plane made the first landing at the new airport. By 1943, the airport was an Army Air Corps Lockheed P-38 Lightning training base and North American P-51 Mustang operating base.

After the war, it was one of the five large storage, sales, and scrapping centers for Army Air Forces aircraft established by the Reconstruction Finance Corporation; others were at Albuquerque AAF, New Mexico; Altus AAF, Oklahoma; Kingman AAF, Arizona; and Walnut Ridge AAF, Arkansas.

Ontario International Airport[edit]

Aerial view of Ontario International Airport

In 1946, Ontario Municipal Airport was renamed "Ontario International Airport" because of the trans-Pacific cargo flights originating there. On 17 May 1946, two Army surplus steel hangars arrived at the airport, which the Ontario city council had authorized the $50,000 purchase of just the previous week. City officials were pleased to have secured a bargain. Thought to be the only pair available in the U.S., City Manager Harold J. Martin observed that even if they could be acquired at a later date, the cost would be several times that afforded by prompt action.[10] A Pacific Overseas Airlines flight from Shanghai arrived at Ontario on 18 May 1946, "which inaugurated regular round-trip air passenger service between the United States and the Orient."[11] In 1949, Western Airlines began scheduled flights; in 1955, Bonanza Air Lines flights started. Western and Bonanza nonstops did not reach beyond Las Vegas. In 1962, Western began nonstop flights to San Francisco (one Electra daily). In 1967, Bonanza began nonstop F27 flights to Phoenix.

Ontario and Los Angeles entered into a joint-powers agreement, making Ontario International Airport part of the Los Angeles regional airports system in 1967.[12] In 1968, the airport had its first scheduled jet flights. In 1969, Continental Airlines started Boeing 720B nonstops to Denver and Chicago; Air California started Boeing 737 flights to San Jose; Pacific Southwest Airlines started San Francisco flights; and Western began 737 nonstops to Sacramento and Salt Lake City. In 1970, United Airlines started a nonstop to Chicago and American started flights to Dallas (and Chicago, for a short time). In September 1986, Ontario hosted the Concorde supersonic airliner during a promotional round-the-world flight.[13]

In 1981, a second east–west runway, 26L/8R, was built, necessitating the removal of the old NE-SW runway 3/21. Remnants of the 3/21 runway are visible in the present-day taxiways. With the completion of the new runway, the existing runway 25/7 became 26R/8L. In 1985, the city of Los Angeles acquired Ontario International Airport outright from the city of Ontario. In 1987, Runway 26R/8L was extended to the east to bring the two runway thresholds side by side, so aircraft would be higher over neighborhoods. 26R/8L became the main departing runway and 26L/8R the main arrival runway.

For a number of years, the airport operated alongside Ontario Air National Guard Station, which was closed as a result of the 1995 Base Realignment and Closure Commission.

In 1998, the new and larger airport terminal opened, designed by DMJM Aviation.[14] Two older terminals, west of the current terminal, the main terminal and a small terminal were discontinued when the new Terminal 2 and Terminal 4 facilities were opened. The old terminals currently house the administration and the USO.

In 2005 and 2006, runway 26R/8L was repaved and strengthened, and received storm drains and better runway lighting, and additional improvements to taxiway intersections were made.[15]

In 2006, Ontario International Airport became "LA/Ontario International Airport." The "LA" portion was added to remind fliers of Los Angeles and to avoid confusion with the province of Ontario in Canada.[16]

The airport's traffic peaked in 2005 with 7.2 million passengers, and remained steady through 2007. Around the time of the 2008 financial crisis, JetBlue suspended service to ONT, and major legacy carriers significantly decreased their passenger volume at the airport.[17] Southwest Airlines transferred a significant portion of its Ontario capacity to Los Angeles International Airport (LAX), making LAX fares more competitive with ONT, while being coupled with more attractive frequencies and a wider range of destinations. The surrounding Inland Empire region was hit hard by the financial crisis, with the nearby city of San Bernardino declaring bankruptcy.[18] The airport suffered a 40% decline in traffic between 2007 and 2012,[19] during which time traffic at LAX recovered to surpass prerecession levels.[17]

Ontario International Airport Authority[edit]

Ownership and control of the airport became an issue in late 2010, when the city of Ontario, supported by the Southern California Association of Governments, criticized and questioned LAWA's operation of the airport.[20][21][22] A group of local government officials, led by Ontario city council member Alan Wapner, began a campaign to transfer control of the airport away from Los Angeles World Airports. Wapner argued that the City of Los Angeles had no interest in maintaining service at an airport well beyond its borders.[18] In 2013, LAWA offered to return the airport to local control for a purchase price of $474M, which was rejected.[23] Local groups then sued the city of Los Angeles, a suit that was temporarily suspended when both sides agreed to attempt to work together.[24]

In 2015, Los Angeles World Airports agreed to turn over ownership of Ontario Airport to the city of Ontario. LAWA was "to be reimbursed for its investments in the facility, job protection for the facility's 182 employees and the settlement of a lawsuit in which Ontario sought to regain control of the airport. Upon transfer of ownership, the airport would be operated by the Ontario International Airport Authority, formed under a joint-powers agreement between the city of Ontario and San Bernardino County". The Ontario International Airport Authority took over control of operations in November 2016, and the airport's operating name was reverted to Ontario International Airport, since the City of Los Angeles no longer oversaw operations of the airport.[6][25]

The airport's continuing traffic decline reversed in early 2017, when the airport experienced faster growth than LAX for the first time since 2007.[26] On September 30, 2017, it was announced that China Airlines would begin nonstop flights from Ontario to Taipei, which started in spring 2018.[27][28]

On July 14, 2023, New Pacific Airlines (formerly known as Northern Pacific Airways) commenced operations and made its first flight to Harry Reid International Airport in Las Vegas, Nevada, and started flights to Reno–Tahoe International Airport, also in Nevada, and Nashville International Airport in Tennessee. Also on that day, Volaris added flights to El Salvador. On January 1, 2024, they ended flights to Las Vegas and subsequently discontinued all scheduled service altogether.[29]


International Arrivals Facility
Terminal 2


Ontario International Airport has two terminals with 26 gates and a separate adjacent international arrivals facility with 2 arrival-only gates, totaling 28 gates.[30]

Terminal 2 has 265,000 sq ft (24,600 m2) and 12 gates.[31] Alaska Airlines, Avianca El Salvador, China Airlines, Delta Air Lines, Frontier Airlines, JetBlue, United Airlines, and Volaris are located in Terminal 2.

Terminal 4 has 265,000 sq ft (24,600 m2) and 14 gates.[32] American Airlines, Hawaiian Airlines, and Southwest Airlines are located in Terminal 4.

The international arrivals facility has two gates for arrivals only, containing the airport's U.S. Customs and Border Protection facility.[33] International flights depart from the main terminals. Avianca, China Airlines, and Volaris are the only airlines with international arrivals that operate this terminal.

A USO is housed in the old terminal complex near the international arrivals facility.[34]

Remote parking is located on the east end of the airport (moved from its former location at the west end). On the east end is a ground transportation center that consolidates the rental car companies in one central location. The Omnitrans 61 bus traverses the airport, providing connections to each of the terminals, rental car and remote parking lots, and public transit stops.

General aviation is located at the south side of the airport, although most general-aviation pilots tend to use a number of nearby airports: Redlands Airport, Chino Airport, Brackett Field in La Verne, Cable Airport in Upland, or San Bernardino International Airport.

Noise restrictions[edit]

Ontario has few noise restrictions/abatement rules, unlike other Southern California airports, such as John Wayne Airport, Hollywood Burbank Airport (Bob Hope), Long Beach Airport, and San Diego International Airport, which all have very strict policies.[35] The airport is allowed to operate 24/7, but during the hours of 10 pm to 7 am, all aircraft must arrive from the east on runway 26L or 26R and take off to the east on runway 8R or 8L, depending on ATC instruction. This procedure is known as "Contra-Flow" operations and applies to turbojet or turbofan aircraft. This procedure is similar to the one employed by LAX, where all landings are conducted from the east and all takeoffs are to the west (known as "over-ocean" operations) between midnight and 6:30 am. Both of these procedures are employed as long as weather and/or construction activity permits. This is done in an effort to be better neighbors and minimize the noise impact to the surrounding communities as much as possible. Residents of cities west of the airport have complained of increased noise as a result of the airport's refusal to abide by noise abatement rules.[36]

Ground transportation[edit]

Ground entrance

The airport is located about 38 miles (61 km) east of downtown Los Angeles, 18 miles (29 km) west of downtown San Bernardino, and 14 miles (23 km) northwest of downtown Riverside. Motorists can use the San Bernardino Freeway (Interstate 10), Ontario Freeway (Interstate 15), or the Pomona Freeway (State Route 60).

Omnitrans, San Bernardino County's main public transportation agency, operates three routes near the airport.[37] Route 380, also called ONT Connect, provides non-stop daily service every 35 to 60 minutes between the airport and Rancho Cucamonga station,[38] where passengers can connect to Metrolink's San Bernardino Line, which operates daily with service to Los Angeles Union Station. Route 61 operates daily between Pomona–Downtown station, Ontario station, the airport, and Fontana station. Both routes 61 and 380 operate from stops located east of baggage claim at terminals 2 and 4. Route 81 operates Monday through Saturday on Haven Avenue which runs along the eastern edge of the airport between Chaffey College and Ontario–East station, where passengers can connect to Metrolink's Riverside Line, which operates during weekday peak periods.

The SBCTA is currently in the process of implementing a 4-mile tunnel (6.4 km) from Metrolink’s Rancho Cucamonga station to Ontario International Airport as a cost-effective solution compared to the Foothill Extension project of the Los Angeles Metro Rail’s A Line.[39][40][41] The Ontario Airport Loop was expected to cost around $75 million compared to the Foothill Extension at around $1.5 billion.[42]

The current project planning is being developed by HNTB[43] after The Boring Company dropped out due to their refusal to submit another refined proposal. The estimated costs are around $492 million under the current expanded proposal.[44]

Airlines and destinations[edit]


Alaska Airlines Portland (OR), Seattle/Tacoma [45]
American Airlines Charlotte, Dallas/Fort Worth, Phoenix–Sky Harbor[45]
American Eagle Phoenix–Sky Harbor [45]
Avianca El Salvador San Salvador [45]
China Airlines Taipei–Taoyuan [45]
Delta Air Lines Atlanta, Salt Lake City, Seattle/Tacoma[46] [45]
Delta Connection Salt Lake City [45]
Frontier Airlines Denver, El Paso,[47] Houston–Intercontinental,[47] Las Vegas, Portland (OR), Sacramento (resumes July 11, 2024),[48] Salt Lake City, San Francisco, Seattle/Tacoma[47]
Seasonal: Dallas/Fort Worth, Phoenix–Sky Harbor
Hawaiian Airlines Honolulu [45]
JetBlue New York–JFK (ends October 27, 2024)[49] [45]
Southwest Airlines Austin, Chicago–Midway, Dallas–Love, Denver, Houston–Hobby, Las Vegas, Nashville,[50] Oakland, Phoenix–Sky Harbor, Portland (OR), Sacramento, San Jose (CA) [45]
United Airlines Denver, San Francisco
Seasonal: Houston–Intercontinental
United Express Denver, Houston–Intercontinental, San Francisco [45]
Volaris Guadalajara [45]
Volaris El Salvador San Salvador [45]


Alpine Air ExpressSeasonal: Oxnard
Amazon Air Atlanta, Austin,[51] Baltimore, Charlotte, Chicago/Rockford, Cincinnati, Dallas/Fort Worth, Denver, Fort Worth/Alliance, Hartford, Honolulu, Kailua–Kona, Lakeland, Lihue, Miami, Minneapolis/St. Paul, Portland (OR),[52] Seattle/Tacoma, St. Louis, Wilmington (OH)[53]
Ameriflight Bakersfield, Blythe, Burbank, El Centro, Fresno, Lancaster, Mojave, Oxnard, Palm Springs, San Diego, San Luis Obispo, Tijuana, Visalia
Amerijet International Miami, Philadelphia, San Juan
Asia Pacific Airlines Greensboro
Seasonal: Portland (OR), Seattle–Boeing
Atlas Air[54] Baltimore, Cincinnati, Fort Worth/Alliance, Kahului, Kailua-Kona
FedEx Express El Paso, Fort Worth/Alliance, Honolulu, Indianapolis, Kansas City, Los Angeles, Memphis, Newark, Oakland, Portland (OR), Reno/Tahoe, Sacramento, Salt Lake City, San Diego, Seattle/Tacoma
FedEx Feeder Bakersfield, Bishop, El Centro, Inyokern, Palmdale, San Diego, San Luis Obispo, Santa Barbara, Santa Maria
Kalitta Air Seasonal: Honolulu, Philadelphia, Sacramento–Mather[55]
UPS Airlines Albuquerque, Anchorage, Billings, Boise, Chicago/Rockford, Columbia (SC), Dallas/Fort Worth, Denver, Des Moines, El Paso, Fargo, Fort Lauderdale, Fresno, Hartford, Hong Kong, Honolulu, Houston–Intercontinental,[56] Kahului, Kailua–Kona, Los Angeles, Louisville, Miami, New York–JFK, Newark, Oakland, Omaha, Orlando, Philadelphia, Phoenix–Sky Harbor, Portland (OR), Providence, Raleigh/Durham,[57] Reno/Tahoe, Sacramento–Mather, Salt Lake City, San Bernardino, San Diego, Seattle–Boeing, Sioux Falls, Spokane, Tokyo–Narita
Seasonal: Lansing, Manchester (NH), Minneapolis/St. Paul


Terminal 4.
Check-in counters at Terminal 2.
Escape Lounge at the airport.
Amazon Prime Air Boeing 767-300F at the airport.
UPS Airlines airplanes at the airport's cargo terminal.

Top destinations[edit]

Busiest domestic routes (April 2023 – March 2024)[58]
Rank Airport Passengers Carriers
1 Dallas/Fort Worth, Texas 387,000 American, Frontier
2 Denver, Colorado 359,000 Frontier, Southwest, United
3 Phoenix–Sky Harbor, Arizona 313,000 American, Frontier, Southwest
4 Las Vegas, Nevada 286,000 Frontier, New Pacific, Southwest
5 Seattle/Tacoma, Washington 276,000 Alaska, Delta
6 Sacramento, California 203,000 Frontier, Southwest
7 Atlanta, Georgia 178,000 Delta, Frontier
8 Oakland, California 154,000 Southwest
9 San Jose, California 144,000 Southwest
10 San Francisco, California 130,000 Frontier, United
Busiest international routes (2023)[59][60]
Rank Airport Passengers Carriers
1 Taiwan Taipei–Taoyuan, Taiwan 184,413 China Airlines
2 Mexico Guadalajara, Mexico 154,821 Volaris
3 El Salvador San Salvador, El Salvador 78,256 Avianca, Volaris

Airline market share[edit]

Largest airlines by passengers
(April 2023 – March 2024)
Rank Airline Passengers Share
1 Southwest Airlines 2,441,000 40.57%
2 American Airlines 987,000 16.40%
3 Frontier Airlines 741,000 12.32%
4 Delta Airlines 612,000 10.18%
5 Alaska Airlines 447,000 7.42%

Annual traffic[edit]

Annual passenger traffic at ONT airport. See Wikidata query.
Annual passenger traffic (enplaned + deplaned) at ONT, 1992 through 2022[61][4][62]
Year Passengers Year Passengers Year Passengers Year Passengers
1992 6,121,623 2002 6,516,858 2012 4,318,994 2022 5,740,593
1993 6,192,035 2003 6,547,877 2013 3,969,974 2023 6,430,033
1994 6,386,000 2004 6,937,337 2014 4,127,278
1995 6,405,097 2005 7,213,528 2015 4,209,311
1996 6,252,838 2006 7,049,904 2016 4,217,366
1997 6,300,862 2007 7,207,150 2017 4,552,225
1998 6,434,858 2008 6,232,761 2018 5,115,894
1999 6,578,005 2009 4,886,695 2019 5,583,732
2000 6,756,086 2010 4,808,241 2020 2,538,482
2001 6,702,400 2011 4,551,875 2021 4,496,592

Accidents and incidents[edit]

  • On December 25, 1945, a USAAF Douglas C-47 was stolen by two non-pilot ground members. It crashed four miles east of the airport, killing both occupants.[63]
  • On January 15, 1969, a Pacific Southwest Airlines Boeing 727-100, N973PS, collided with Cessna 182 N42242 while it was climbing to its cruising altitude. Both aircraft were in controlled airspace on the same frequency. The 727 continued on to Ontario, CA and made a safe landing. The right wing of the Cessna was damaged, so it returned to San Francisco. There were no fatalities on either aircraft.[64]
  • On March 31, 1971, Western Airlines Flight 366, a Boeing 720 on a training flight, crashed on approach to Ontario during a three-engine ILS approach in limited visibility due to a loss of left rudder control. All five occupants on board were killed.[65]


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  66. ^ Accident description for N6383 at the Aviation Safety Network

External links[edit]