Is a 30-Minute Layover Enough at SFO?
San Francisco International — San Francisco
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High Risk — 55% miss rate
Probably not — a 30 minutes layover at SFO means roughly a 55% chance of missing your flight.
55%
Miss Rate
76%
On-Time Rate
69m
Avg Delay
Why 30 Minutes Is High Risk at SFO
A 30-minute connection at SFO is very risky. There's roughly a 55% chance you'll miss your connecting flight. We strongly recommend at least 133 minutes, or consider booking a direct flight.
·Airport reliability: SFO has a 76% on-time rate
−Below minimum connection time: SFO requires at least 60 minutes for domestic connections. You have 30.
−High average delay: When flights are late at SFO, the average delay is 69 minutes
−Long taxi times: Planes at SFO typically sit on the runway for 21 minutes before takeoff
Minimum Connection Time at SFO
60m
Domestic
120m
International
Your 30-minute layover is 30 minutes below the domestic minimum. Even without any delays, you may not have enough time to reach your gate.
Terminal Transfers at SFO
How to transfer: AirTrain connects all terminals; Terminals 1-3 have airside connectors
Transfer time: 5-15 minutes between terminals depending on route
!TSA re-screening: Required for some terminal changes — Connections between the International Terminal and domestic terminals may require re-screening. Terminals 1, 2, and 3 are connected airside via walkways.
Compare Other Layover Times at SFO
Click any row to see the full analysis for that layover time.
What to Do Instead
- →Look for itineraries with 133+ minute layovers at SFO
- →Consider a direct flight if available
- →Book both legs on the same ticket (airline must rebook you if you miss the connection)
- →Choose an early morning first leg — morning flights are delayed less often
Check a Different Layover Time
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