IAD → BUF: cancellations & delays
Over Jan 2023 - Apr 2026, 2.6% of Washington Dulles International Airport (IAD) to Buffalo Niagara International Airport (BUF) flights were cancelled and 18.7% arrived at least 15 minutes late, across 351 flights, flown by YX, UA. Cancellations peak in January.
Check today's live IAD departures →Airport pages: Washington Dulles International Airport (IAD) · Buffalo Niagara International Airport (BUF)
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.