IAD → BOS: cancellations & delays
Over Jan 2023 - Apr 2026, 1.5% of Washington Dulles International Airport (IAD) to Boston Logan International Airport (BOS) flights were cancelled and 21.9% arrived at least 15 minutes late, across 4,918 flights, flown by UA, YX. Cancellations peak in January.
Check today's live IAD departures →Airport pages: Washington Dulles International Airport (IAD) · 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.