BUF → DEN: cancellations & delays
Over Jan 2023 - Apr 2026, 0.8% of Buffalo Niagara International Airport (BUF) to Denver International Airport (DEN) flights were cancelled and 21.5% arrived at least 15 minutes late, across 1,463 flights, flown by WN, UA, F9. Cancellations peak in January.
Check today's live BUF departures →Airport pages: Buffalo Niagara International Airport (BUF) · Denver International Airport (DEN)
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.