SFO → BOS: cancellations & delays
Over Jan 2023 - Apr 2026, 1.1% of San Francisco International Airport (SFO) to Boston Logan International Airport (BOS) flights were cancelled and 22.0% arrived at least 15 minutes late, across 14,971 flights, flown by UA, B6, DL, AS, WN. Cancellations peak in February.
Check today's live SFO departures →Airport pages: San Francisco International Airport (SFO) · Boston Logan International Airport (BOS)
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.