Updated: Dec 6, 2021
IATA Designator: FL, ICAO Designator: TRS, Callsign: CITRUS
Orlando-based low cost carrier serving the eastern and central United States, its main hubs are at Hartsfield-Jackson Atlanta International Airport (ATL), Atlanta and General Mitchell International Airport (MKE), Milwaukee.
Alaska Air Group
IATA Designator: AS, ICAO Designator: ASA, Callsign: ALASKA
The Seattle-based Alaska Air Group with its subsidiaries of Alaska Airlines and Horizon Air. Alaska Airlines is a major US carrier with its hubs at Sea-Tac Airport, Ted Stevens Anchorage International Airport, Anchorage, and Portland International Airport, Portland. Horizon Air is a regional low-cost airline that serves 52 cities in the United States, Canada and Mexico
IATA Designator: AA, ICAO Designator: AAL, Callsign: AMERICAN
Formerly the world's largest airline (still No. 2) with its main hub at Dallas/Fort Worth International Airport (IATA code: DFW).
American Eagle Airlines
IATA Designator: MQ, ICAO Designator: EGF, Callsign: EAGLEFLIGHT
American Eagle Airlines is based in Fort Worth, Texas. American Eagle and Executive Airlines based in San Juan, Puerto Rico are regional affiliates of American Airlines. The American Eagle network is the largest regional airline system in the world, with over 1700 daily flights to more than 150 cities throughout the United States, Canada, the Bahamas, the Caribbean and Mexico.
Atlantic Southeast Airlines (ASA)
IATA Designator: EV, ICAO Designator: ASQ, Callsign: ACEY
Atlantic Southeast Airlines is a major U.S. airline carrier with its main hub at Hartsfield-Jackson Atlanta International Airport (ATL).
IATA Designator: OH, ICAO Designator: COM, Callsign: COMAIR
Comair, a subsidiary of Delta Air Lines, is a major U.S. carrier and is one of the world's largest regional airlines. Comair has its main hub at Cincinnati-Northern Kentucky International Airport (CVG), Cincinnati.
IATA Designator: CO, ICAO Designator: COA, Callsign: CONTINENTAL
Continental Air Lines is a major U.S. airline based Houston, Texas. United Continental Holdings, Inc. (NYSE: UAL) is the holding company for both United Airlines and Continental Airlines. Together with United Express, Continental Express and Continental Connection, these airlines operate a total of approximately 5,800 flights a day to 371 airports throughout the Americas, Europe and Asia.
IATA Designator: DL, ICAO Designator: DAL
Delta operates an extensive domestic and international network and is the world's largest airline operating under a single certificate. Delta's main hub is at Hartsfield-Jackson Atlanta International Airport, Atlanta.
IATA Designator: F9, ICAO Designator: FFT, Callsign: FRONTIER
Frontier Airlines is a major U.S. airline carrier a wholly owned subsidiary of Indianapolis-based Republic Airways Holdings Inc, an airline holding company that owns Chautauqua Airlines, Lynx Aviation, Republic Airlines and Shuttle America. Frontier operates approximately 550 daily departures and arrivals from its three hubs at Denver International Airport (DEN), General Mitchell International Airport (MKE), Milwaukee, and Kansas City International Airport (MCI),
IATA Designator: HA, ICAO Designator: HAL, Callsign: HAWAIIAN
Honolulu-based major airline of the United States. It is Hawaii's first and largest airline. The airline operates its main hub at Honolulu International Airport (HNL).
IATA Designator: B6, ICAO Designator: JBU, Callsign: JETBLUE
New York based low cost airline. JetBlue serves 63 destinations in 22 U.S. states (including Puerto Rico), and eleven countries in the Caribbean and Latin America. Main base at New York's John F. Kennedy International Airport,
IATA Designator: YV, ICAO Designator: ASH, Callsign: AIRSHUTTLE
U.S. regional airline based in Phoenix, Arizona. Mesa Airlines operates flights as United Express, US Airways Express, Delta Connection (via Freedom Airlines), and under the brand go! for flights within the Hawaiian Islands.
IATA Designator: OO, ICAO Designator: SKW, Callsign: SKYWEST
A major U.S. regional airline headquartered in St. George, Utah. SkyWest serves as a feeder airline for various major carriers. SkyWest's largest stations are Denver International Airport (DEN) and Salt Lake City International Airport (SLC).
IATA Designator: WN, ICAO Designator: SWA, Callsign: SOUTHWEST
A major American low-cost carrier based in Dallas, Texas. In 2010 Southwest was the largest airline in the United States based on domestic passengers carried.
IATA Designator: NK, ICAO Designator: NKS, Callsign: SPIRITWINGS
IATA Designator: UA, ICAO Designator: UAL, Callsign: UNITED
Was the World's second largest airline and still is a major U.S. airline with its main hub at Chicago's O'Hare International Airport (ORD).
IATA Designator: US, ICAO Designator: USA, Callsign: USAIR
IATA Designator: WO, ICAO Designator: WOA, Callsign: WORLD
World Airways is a major American non-scheduled airline headquartered in Peachtree City, Georgia.
Other US Airlines
IATA Designator: G4, ICAO Designator: AAY, Callsign: ALLEGIANT
Scheduled Air Carrier, sometimes spelled wrong as Allegent Airlines; offers scheduled and charter airline operations throughout the United States. Allegiant offers discount flights and vacation packages, and airfare and hotel packages.