OverviewIn 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 transcontinental and domestic markets.
American has five hubs: Dallas/Fort Worth (DFW), Chicago (ORD), Miami (MIA), New York (JFK), and Los Angeles (LAX). 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. New York-LaGuardia serves as a focus city. American currently operates maintenance bases at Tulsa (TUL) and Fort Worth Alliance (AFW). American closed its maintenance base at Kansas City (MCI) on September 24, 2010.
American Airlines has three regional carriers, of which two are owned by American's parent, AMR Corporation and one is owned by a third party.
- American Eagle Airlines operates as "American Eagle" with hubs in Chicago O'Hare, Dallas/Fort Worth, New York LaGuardia, Los Angeles, Miami and San Juan. The airline provides regional feed for American throughout North America, flying regional jets from American's hubs. American Eagle is wholly owned by AMR Corporation, the parent company of American Airlines.
- Executive Airlines operates as "American Eagle" with hubs in Miami and San Juan. Executive flies Super ATR turboprops throughout the Caribbean. Executive Airlines is a wholly owned subsidiary of American Eagle and, by extension, AMR.
- Chautauqua Airlines operates as "AmericanConnection", feeding American's flights from its Chicago O'Hare Hub (transferred from St Louis April 6, 2010). Chautauqua is owned by Republic Airways Holdings, a separate company with no affiliation to AMR.
 FormationAmerican Airways was developed from a conglomeration of 82 small airlines through acquisitions and reorganizations: initially, American Airways was a common brand by a number of independent carriers. These included Southern Air Transport in Texas, Southern Air Fast Express (SAFE) in the western US, Universal Aviation in the Midwest (which operated a transcontinental air/rail route in 1929), Thompson Aeronautical Services (which operated a Detroit-Cleveland route beginning in 1929) and Colonial Air Transport in the Northeast.
On January 25, 1930, American Airways was incorporated as a single company, based in New York, with routes from Boston, New York and Chicago to Dallas, and from Dallas to Los Angeles. The airline operated wood and fabric-covered Fokker Trimotors and all-metal Ford Trimotors. In 1934 American began flying Curtiss Condor biplanes with sleeping berths.