BOS → IAD: cancellations & delays
Over Jan 2023 - Apr 2026, 1.4% of Boston Logan International Airport (BOS) to Washington Dulles International Airport (IAD) flights were cancelled and 16.4% arrived at least 15 minutes late, across 4,917 flights, flown by UA, YX. Cancellations peak in January.
Check today's live BOS departures →Airport pages: Boston Logan International Airport (BOS) · Washington Dulles International Airport (IAD)
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.