A hub for Alaska, America, Delta, United, and Virgin Airlines, LAX is also a focus city for Allegiant, Air New Zealand, Qantas, Southwest, Spirit, and Volaris airlines. American, followed by United, and then Southwest run the most flights from the airport.

While Los Angeles International Airport (LAX) is a major hub for several carriers, Delta Air Lines is currently the dominant "global carrier" at the airport in 2026. Delta has invested billions into its "Delta Sky Way" at Terminals 2 and 3, maintaining the largest market share by both seat capacity and daily departures. However, LAX is unique because it functions as a "fortress hub" for four major airlines: Delta, United, American, and Southwest. Each of these airlines "runs" its own respective terminal complex and maintains a massive presence. In 2026, Delta's dominance is most visible through its new nonstop flagship routes to international hubs like Hong Kong and Paris. Despite Delta's leading position, no single airline "owns" LAX in the way Delta owns Atlanta or United owns Houston; instead, it remains one of the most competitive aviation battlegrounds in the United States, with over 60 international airlines sharing the space.