The United States Department of Transportation defines a major carrier or major airline carrier as a U.S.-based airline that posts more than $1 billion in operating revenue during a fiscal year, grouped accordingly as "Group III".
Airlines The Bureau of Transportation Statistics updates the listing of major airlines once per year. According to operating revenues, 19 carriers met the requirement for Group III status, including Spirit Airlines which later ceased operations as of May of 2026:
Mainline passenger Alaska Airlines (subsidiary of Alaska Air Group) Allegiant Air American Airlines (subsidiary of American Airlines Group)
Delta Air Lines Frontier Airlines Hawaiian Airlines (subsidiary of Alaska Air Group) JetBlue Southwest Airlines Sun Country Airlines United Airlines
Regional passenger
Envoy Air (subsidiary of American Airlines Group) PSA Airlines (subsidiary of American Airlines Group) Republic Airways SkyWest Airlines
Cargo Atlas Air FedEx Express Kalitta Air UPS Airlines
See also Largest airlines in the world List of largest airlines in North America List of airlines of the United States Legacy carrier
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