Frontier Airlines is a major ultra-low-cost American airline headquartered in Denver, Colorado. It operates flights to over 100 destinations throughout the United States and 31 international destinations, and employs more than 3,000 staff. The carrier is a subsidiary and operating brand of Indigo Partners, LLC, and maintains a hub at Denver International Airport with numerous focus cities across the US.
Envoy Air is an American regional airline headquartered in Irving, Texas, in the Dallas–Fort Worth metroplex. The airline is a wholly owned subsidiary of the American Airlines Group and it is paid by fellow group member American Airlines to staff, operate and maintain aircraft used on American Eagle flights that are scheduled, marketed and sold by American Airlines.
United Express is the brand name for the regional branch of United Airlines, under which five individually owned regional airlines operate short- and medium-haul feeder flights.
Continental Express was the operating brand name used by a number of independently owned regional airlines providing commuter airliner and regional jet feeder service under agreement with Continental Airlines. In 2012 at the time of Continental's merger with United Airlines, two carriers were operating using the Continental Express brand name:
US Airways was a major airline in the United States that operated from 1937 until 2015, when it merged with American Airlines. It was originally founded in Pittsburgh as a mail delivery airline called All American Aviation, which soon became a commercial passenger airline. In 1953, it was renamed Allegheny Airlines and operated under that name for a quarter-century. In October 1979, after the passage of the Airline Deregulation Act, Allegheny Airlines changed its name to USAir. A decade later it had acquired Piedmont Airlines and Pacific Southwest Airlines (PSA), and was one of the U.S.'s seven transcontinental legacy carriers. In 1997, it rebranded as US Airways.
US Airways Express was the brand name for the regional affiliate of US Airways, under which a number of individually owned commuter air carriers and regional airlines operate short and medium haul routes. This code sharing service was previously operated as USAir Express. Mainline carriers often outsource to regional airlines to operate services in order to increase frequency, serve routes that would not sustain larger aircraft, or for other competitive reasons. US Airways Express operations were conducted from smaller markets in the United States, Canada, and the Bahamas primarily centered on US Airways' major hubs and focus cities.
Mesa Airlines, Inc., is an American regional airline based in Phoenix, Arizona. It is an FAA Part 121–certificated air carrier operating under air carrier certificate number MASA036A issued on June 29, 1979. It is a subsidiary of Mesa Air Group and operates flights as United Express via respective code sharing agreements with United Airlines. It serves more than 180 markets in the Western Hemisphere. In a 1997 article from the Journal of Air Transportation, Mesa's safety record was noted as having the fewest incidents among domestic regional airlines at that time. Mesa filed for Chapter 11 bankruptcy in January 2010, hoping to shed financial obligations for leases on airplanes it no longer needed and emerged from bankruptcy in March 2011. In November 2017, Mesa opened a new training center in Phoenix. The 23,000-square-foot facility features a full-size CRJ-200 cabin trainer aircraft, 14 classrooms, and has the capacity to train 300 crew members at one time.
PSA Airlines is an American regional airline headquartered at Dayton International Airport in Dayton, Ohio, United States. The airline is a wholly owned subsidiary of the American Airlines Group and it is paid by fellow group member American Airlines to staff, operate and maintain aircraft used on American Eagle flights that are scheduled, marketed and sold by American Airlines.
Trans States Airlines was a regional airline in the United States that operated from 1982 until 2020 when it shut down due to the COVID-19 pandemic. It was owned by Trans States Holdings and headquartered in Bridgeton, Missouri. At the time of its closing, the airline operated flights for United Airlines under the United Express brand. Trans States Airlines ceased all operations on April 1, 2020.
Shuttle America Corporation was an American regional airline based in Indianapolis, Indiana, United States. It fed United Airlines flights at Chicago O'Hare International Airport (ORD) and Houston Intercontinental Airport (IAH) under the United Express brand, as well as Delta Air Lines flights at Atlanta (ATL), New York-LaGuardia (LGA), and New York-JFK under the Delta Connection brand. Shuttle America also operated two of three Delta Shuttle East Coast routes, serving Washington, D.C., and Chicago from New York-LaGuardia.
The Embraer E-Jet family is a series of four-abreast, narrow-body, short- to medium-range, twin-engined jet airliners designed and produced by Brazilian aerospace manufacturer Embraer.
Republic Airways Inc. is an American regional airline headquartered in Indianapolis, Indiana, United States. Republic operates and maintains aircraft used on flights that are scheduled, marketed and sold by a partner mainline airline. The company is contracted by American Airlines, Delta Air Lines, and United Airlines.
Skyway Airlines was an American ramp and aircraft ground handling services and catering company based in Oak Creek, Wisconsin. Until April 5, 2008, it operated as a regional airline and banner carrier exclusively for Midwest Express Airlines under the business name Midwest Connect, feeding Midwest's hub at General Mitchell International Airport with twelve 32-seat Fairchild-Dornier 328JET regional jet aircraft, and four 19-seat Beechcraft 1900 commuter turboprops. Skyway Airlines, along with its parent corporation, Midwest Air Group, has since ceased operations.
ExpressJet Airlines was a regional airline in the United States that operated from 1987 until 2022. It was headquartered in College Park, Georgia. The company originally operated as a contracted codeshare partner, flying under the American Eagle, Delta Connection and United Express brands at various points in history. In September 2020, it exited the fee-for-departure airline market and temporarily ceased flights after the conclusion of its contract with its sole remaining mainline partner, United Airlines. In September 2021, ExpressJet resumed operations as both an air charter provider and a regional airline under its own brand aha!—short for "Air-Hotel-Adventure." The brand's route structure focused on the West Coast of the United States with a hub at Reno-Tahoe International Airport, and scheduled flights began on October 24, 2021. The airline, including its brand aha!, filed for bankruptcy on August 23, 2022, having ceased all operations the previous day. In July 2023, the airline announced plans to relaunch as an air charter service using a single leased Boeing 777.
Republic Airways Holdings, Inc. is an American airline holding corporation based in Indianapolis, Indiana, that owns Republic Airways, an American regional airline operating in the United States, and LIFT Academy, the only flight training academy owned by an airline in the United States.
Compass Airlines, LLC, was a regional airline in the United States that operated from 2006 to 2020 when it shutdown due to the COVID-19 pandemic. It was headquartered in Delta Air Lines Building C at Minneapolis−Saint Paul International Airport in Fort Snelling, Hennepin County, Minnesota; prior to December 16, 2009, it was headquartered in unincorporated Fairfax County, Virginia, United States, east of the Chantilly CDP. The airline launched inaugural service with a single Bombardier CRJ-200 aircraft under the Northwest Airlink brand between Minneapolis/St. Paul and Washington, D.C., on May 2, 2007. On August 21, 2007, it began flying two Embraer E175 76-passenger aircraft, and expanded to 36 aircraft by December 2008.
Chautauqua Airlines, Inc. was an American regional airline and a subsidiary of Republic Airways Holdings based in Indianapolis, Indiana, United States. Prior to the shut down of operations, it operated scheduled passenger services to 52 airports in the United States and Canada via code sharing agreements as the Delta Connection for Delta Air Lines, AmericanConnection for American Airlines, and United Express for United Airlines. Chautauqua previously flew feeder services for other airlines via code sharing agreements including Allegheny, USAir, TWA, Continental, Frontier, and America West. Its last day in operation was December 31, 2014, at which time all flying was absorbed by the Shuttle America certificate.
Delta Connection is a regional airline brand name for Delta Air Lines, under which a number of individually owned regional airlines primarily operate short- and medium-haul routes. Mainline major air carriers often use regional airlines to operate services via code sharing agreements in order to increase frequencies in addition to serving routes that would not sustain larger aircraft as well as for other competitive or operational reasons.
Delta Shuttle is the brand name for Delta Air Lines' air shuttle service in the Northeastern United States.
American Eagle is a US brand name for the regional branch of American Airlines, under which six individual regional airlines operate short- and medium-haul feeder flights. Three of these airlines, Envoy Air, Piedmont Airlines, and PSA Airlines, are wholly owned subsidiaries of the American Airlines Group. American Eagle's largest hub is Charlotte Douglas International's Concourse E, which operates over 340 flights per day, making it the largest express flight operation in the world.
