SFO San Francisco
San Francisco International(San Francisco Airport)
Best time through security: 4 AM (about 5 min)
Most reliable airline here: United Airlines (80% on time)
Why delays happen: The most common reason for departure delays here is the incoming plane arriving late.
Get a pre-flight briefing for SFO
Delay risk, TSA wait, and weather — emailed before your flight. Free.
Common questions about SFO
Are there delays at SFO right now?
No active delays at SFO right now. Historically, SFO runs on time 76% of the time.
How long is TSA at SFO?
Estimated wait right now: very quiet — expect minimal lines at this hour. Fastest time: 4 AM (about 5 min). Busiest: 8 AM (28-34 minutes).
What usually causes delays at SFO?
The most common reason for departure delays here is the incoming plane arriving late. About 1.1% of flights get cancelled.
How long of a connection do I need?
SFO sees moderate delays — allow at least 90 minutes domestic, 2 hours international.