BOS → SFO: cancellations & delays
Over Jan 2023 - Apr 2026, 1.0% of Boston Logan International Airport (BOS) to San Francisco International Airport (SFO) flights were cancelled and 23.8% arrived at least 15 minutes late, across 14,976 flights, flown by UA, B6, DL, AS, WN. Cancellations peak in February.
Check today's live BOS departures →Airport pages: Boston Logan International Airport (BOS) · 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.