Emerald Air (United States)
Emerald Air (IATA: OD) was an airline headquartered in Austin, Texas, United States. It was formerly known as Emerald Valley Airlines. Emerald Airlines brief history is marked by arrangements to feed connecting flights into both passenger airlines and cargo airlines much larger route systems.
Operations for Purlolator Courier 
Operations for Pan American World Airways 
Operations for Continental Airlines 
For a brief while in the mid-1980s, Emerald Air operated a connecting service on behalf of Continental Airlines from Houston Intercontinental Airport to Houston Hobby Airport, called the Houston Proud Express. Unlike the Pan Am operations the aircraft livery of Emerald was painted to mimic that of Continental Airlines' then present orange colors and scheme. This "cross-town" service in Houston was operated with Douglas DC-9 jet aircraft.
Bankruptcy and acquisition by Bia Cor Holdings Inc. 
By 1985 Emerald ceased operations and filed for Chapter 11 bankruptcy. In 1991, BIA-COR Holdings Inc., acquired Emerald Air's FAA and DOT operating certificate, along with Emerald's three McDonnell Douglas DC-9-14 aircraft; and renamed the carrier Braniff International Airlines, Inc., before promptly going out of business. Parts of Emerald thus became the third and final resurrection of the Braniff name.
Emerald Air operated a fleet of:
- World Airline Directory. Flight International. March 30, 1985. 77.
- Aviation Photos: Emerald AirEmerald Airways Continental's Houston Proud Express (Emerald Air)