San Francisco, CA, U.S.
San Francisco (SFO)
Transferring within and between terminals
You can transfer between terminals either by walking or taking the AirTrain, San Francisco's automated people mover system.
If you are connecting from an international flight to a domestic flight, exit the Customs Arrival Hall through the doors marked Connecting Flights, then proceed to the appropriate terminal. The connecting baggage desk (transfer desk) is located just outside the exit.
How long does it take to transfer between terminals?
The AirTrain operates every four minutes, 24 hours a day, and takes approximately 25 minutes to travel one loop of the airport.