American Airlines American Airlines, Inc. (AA) is a major airline of the United States. It is the world’s largest airline in passenger miles transported and passenger fleet size American Airlines, a subsidiary of AMR Corporation, is headquartered in Fort Worth, Texas, adjacent to the Dallas-Fort Worth International Airport. American operates scheduled flights throughout the United States, and flights to Canada, Latin America, the Caribbean, Europe, Japan, the People’s Republic of China, and India.

In May 2008, American served 260 cities (excluding codeshares with partner airlines) with 655 aircraft. American carries more passengers between the US and Latin America (12.1 million in 2004) than any other airline, and is also strong in the trans/inter/intracontinental market.

American has five hubs: Dallas/Fort Worth (DFW), Chicago (ORD), Miami (MIA), Lambert St Louis International Airport (STL), and Luis Muñoz Marín International Airport in San Juan, PR (SJU). Dallas/Fort Worth is the airline’s largest hub, with AA operating 85 percent of flights at the airport and traveling to more destinations than from its other hubs. Los Angeles (LAX), New York-Kennedy (JFK), and Boston (BOS) serve as focus cities and international gateways.