What Is the Biggest Airline in the United States
American Airlines is widely regarded as the largest airline in the United States by fleet size, scheduled passengers carried, and operating revenue. Headquartered in Fort Worth, Texas, it operates an extensive domestic and international network.
How American Airlines Leads the U.S. Market
American Airlines operates thousands of daily flights to hundreds of destinations worldwide. Its large mainline fleet and regional partners give it broad coverage across the U.S. and key global markets.
How Airline Size Is Measured
Industry reports typically rank airlines by fleet size, passenger volume, and revenue. American Airlines consistently ranks first in the U.S. on these metrics, followed by Delta Air Lines and United Airlines. For detailed fleet and traffic data, see FAA Air Traffic Publications.
