San Francisco International (SFO) has an on-time arrival rate of about 75%. When flights are delayed, the average wait is around 48 minutes. The most common reason for delays here is air traffic and busy airspace. Roughly 1.8% of flights are cancelled. The typical taxi-out time from gate to takeoff is about 18 minutes. TSA security wait is currently About 11-17 minutes right now. The fastest time through security is 10 PM (about 3 min). The busiest period is 7 PM (25-31 minutes).
Source: Bureau of Transportation Statistics, FAA NASSTATUS. Updated March 2026.Last updated: March 2026