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San Francisco International Airport (IATA: SFO, ICAO: KSFO, FAA LID: SFO) is a major international airport located 13 miles (21 kilometers) south of San Francisco, California, United States, adjacent to the cities of Millbrae and San Bruno in unincorporated San Mateo County. The airport has flights to destinations throughout the Americas and is a major gateway to Europe, Asia, and Australasia. San Francisco is the largest airport in the San Francisco Bay Area, and is the second busiest airport in the state of California after Los Angeles International Airport.
As of 2005, San Francisco International Airport is the fourteenth largest in the United States and the twenty-third largest airport in the world, in terms of passengers.
It is a major hub of United Airlines, and is expected to become the main hub of Virgin America if the airline begins operations as scheduled in 2007, but its application is currently in jeopardy.
The airport enjoys a connection to an adjacent freeway, U.S. Route 101, as well as having its own Bay Area Rapid Transit (BART) station adjoining one of its terminals. Interstate 380 intersects
Highway 101 north of the airport, providing further connections to the region. SFO has numerous passenger amenities, including a wide range of food and drink establishments, shopping, baggage storage,
public showers, a medical clinic, and assistance for lost or stranded travelers and military personnel. The airport hosts the Louis A. Turpen Aviation Museum, the San Francisco Airport Commission
Aviation Library, and both permanent and temporary art exhibitions in several places in the terminals.