San Diego International Airport (IATA: SAN, ICAO: KSAN, FAA LID: SAN), also known as Lindbergh Field, is a public airport located
3 mi (4.8 km) northwest of the central business district of San Diego, California and 15 mi (24 km) from the Mexico – United States border
at Tijuana, Mexico.
San Diego International is the busiest single-runway commercial service airport in the United States, and second busiest single use-runway
in the world with approximately 550 departures and arrivals carrying 50,000 passengers each day, and a total of 17,250,269 passengers in 2012.
San Diego is the largest metropolitan area of the United States that serves as neither a hub nor a secondary hub for any airline; however,
the airport is a focus city for Southwest Airlines.
The top five airlines in terms of market share for 2011 were Southwest Airlines (38.45%), United Airlines (15.3%), Delta Air Lines (10.9%),
American Airlines (7.9%) and Alaska Airlines (6.5%).
Inspired by Charles Lindbergh's historic flight and excited to have made the plane he flew, the city of San Diego constructed a municipal
airport to be operated by the city. Lindbergh himself encouraged the building of the airport and agreed to lend his name to
it. The new airport, dedicated on August 16, 1928, was given the name San Diego Municipal Airport – Lindbergh Field, by which name it is still known.
This naming occurred because San Diego was the city from which Lindbergh began the journey that would ultimately become the first solo transatlantic
flight, in addition to being the place where his aircraft was designed, built, and tested, at Dutch Flats.