San Francisco International Airport

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County: San Mateo County 

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Directions to and from San Francisco International Airport


Airport code: SFO

San Francisco is a major international airport with direct service to major cities around the world. It is served by major US and foreign airlines. The airport has three major domestic terminals (1, 2, and 3) and one international terminal. (airline information)

An automated train system called AirTrain provides free transportation between the terminals, the BART station at the airport, some parking garages, and the Rental Car Center. AirTrain runs every few minutes 24 hours a day.




BART trains stop at the San Francisco International Airport Station, which is located by the International Terminal. The BART system serves Downtown San Francisco and the East Bay and trains generally operate every 15 to 20 minutes 7 days a week.

SFO employees are eligible for a fare discount on BART. [1]


Caltrain, which serves San Jose, stops a mile away from the airport at Millbrae. BART provides connection from SFO to Millbrae Station. During nights and weekends, BART provides direct trains between SFO and Millbrae. During daytime, riders need to transfer between BART trains at San Bruno Station.

Also, SamTrans bus KX and 292 provides additional bus connections between Caltrain (at other stations) and SFO.


BART provides connection between Amtrak trains at Richmond Station and SFO.

Bus - SamTrans

SamTrans provides low cost local and express bus service.

  140    Pacific Manor - SFO Rental Car AirTrain Station via San Bruno BART

  292    Hillsdale Station - San Francisco (Transbay Terminal)

  397    All-Nighter: Palo Alto Station - San Francisco (Transbay Terminal)

  398    Redwood City Station - San Bruno BART via SFO

  KX    Redwood City Station - San Francisco (Transbay Terminal)

Line 292/397 is the cheapest form of transportation to/from San Francisco. All SamTrans buses run on the lower level of the terminals, serving the same stops. See the headsign for bus destination. KX has restrictions on carrying luggage between downtown SF and airport.

Map of SamTrans bus stops

Scheduled airporters

Airporters provide long distance bus service. Advance reservation is required for some companies.

  Evans Transportation    Napa/Vallejo - SFO, Napa/Vallejo - OAK

  Marin Airporter    Marin County - SFO

  Monterey Airbus    Monterey - SJC - SFO

  Santa Cruz Airport Flyer    Santa Cruz - SJC - SFO

  Sonoma County Airport Express    Santa Rosa/Petaluma - SFO, Santa Rosa/Petaluma/San Rafael - OAK

Map of airporter stops


Bicyclist are prohibited from riding on the main roadway at the airport, but are allowed on McDonnell Road, North Link Road, and South Link Road.

Bicycle parking is available on the ground level by the International Terminal and inside Domestic Garage (valet parking) level 4, section C. Bicycles can be parked for up to 14 days by registering with an on-duty security guard or valet agent. Registration is not needed for parking less than 24 hours.

Bicycle parking information