OverviewPublic Transportation at San Francisco International Airport include the efficient Metro rail services via BART & Caltrain, and SamTrans bus.
Note: Ride-shares by 'Sidecar' (visit: side.cr); and by 'Lyft' & 'Uber' are now operating at SFO.
1. By Train:
BART Rapid Rail serves directly northern San Mateo County, San Francisco, and the East Bay. The SFO BART Station is at the International Terminal's Departures/Ticketing level - at Boarding Area G side. (If arriving at either Terminals 1, 2 or 3 - take the free inter-terminal AirTrain to Garage G/ Bart Station stop.) BART connects to Caltrain at the Millbrae station.
Caltrain starts at Millbrae station and runs daily to either San Jose or San Francisco; it also offers weekday commuter-hour service to Gilroy, including some express service at select stations.
2. By Bus:
SamTrans Public Buses - Routes KX, 292 & 397 & 398 run 24/7, serving San Mateo County and parts of San Francisco. SamTrans buses stop at
(a) International Terminal 1: at level 1, Courtyard A, and at curbside next to Courtyard G;
(b) Terminal 2: at Arrivals /Baggage Claim level, at center island next to Courtyard 2;
(c) Terminal 3: at Arrivals /Bagage Claim level, at curbside - adjacent to Courtyard 4.
SamTrans Routes 140, 292 & 397 stop at Rental Car Center.