QUICK ANSWER
Stay at the airport and use current terminal/airside transfer guidance.
01
City exit
BART can make a city visit predictable, but include station access, train time both ways and security on return.
02
International arrival
Immigration and baggage can materially reduce usable time.
03
Weather
Bay Area weather and operational conditions can affect flights; check official flight status before leaving.
Frequently asked questions
Can I go into San Francisco on an SFO layover?
On a sufficiently long layover, yes, but calculate usable time after arrival processing and the full return buffer.
Is BART useful for a layover?
It can be, because it is a direct rail option from SFO; check current service and your destination.
✓
Sources and verification
Time-sensitive airport, airline, visa, security and transport details should always be confirmed with the relevant official source before travel.