SEA → SFO: cancellations & delays
Over Jan 2023 - Apr 2026, 1.0% of Seattle–Tacoma International Airport (SEA) to San Francisco International Airport (SFO) flights were cancelled and 27.8% arrived at least 15 minutes late, across 22,167 flights, flown by AS, UA, OO, DL, WN. Cancellations peak in January.
Check today's live SEA departures →Airport pages: Seattle–Tacoma International Airport (SEA) · San Francisco International Airport (SFO)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.