About San Francisco International Airport

San Francisco International Airport, situated in unincorporated San Mateo County, is the gateway to North America. Owned and operated by the City and County of San Francisco, this international airport serves Northern California and offers a direct rail service to San Francisco. San Francisco Airport is the largest airport in Northern California. San Francisco International Airport (IATA code: SFO) is the second-busiest airport in California and a hub for Alaska Airlines, United Airlines and Virgin America. Flights to San Francisco International Airport are available from various international airlines, including Air China, Air New Zealand and Finnair. SFO is a 15-minute drive or a 25-minute train ride from the city center of San Francisco. Book your cheap flights to and from San Francisco International Airport online!