Figure 2-14 U.S. Airline Passengers by Carrier Type: 2003–2015
NOTES: Network airlines include United, Continental, Continental Micronesia, Delta, American, US Airways, Alaska, America West, and Northwest. Low-Cost airlines include Southwest, AirTran, JetBlue, Spirit, Frontier, Virgin America, and Allegiant. Regional airlines include Envoy, SkyWest, ExpressJet, Atlantic Southeast, Endeavor, Mesaba , Republic, Horizon, Air Wisconsin, Mesa, Shuttle America, Chautaqua, PSA, PSA, Compass, GoJet, Executive, Colgan, Comair, and Lynx. Other airlines generally operate within specific niche markets.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, T-100 Market Data, available at www.transtats.bts.gov as of June 2016.