Southwest AirlinesWN
Flights WN1461 10:20 Su · WN330 16:00 Tu We · WN665 16:00 Sa · WN839 16:50 Mo Th Fr
live
Direct flights from Buffalo (BUF) to Denver (DEN): 14 nonstop departures observed each week across 2 airlines. 70% of the last 10 operated flights arrived within 15 minutes of schedule. The median arrival is 7 minutes late. No cancellations were recorded across the 10 tracked flights. The nonstop covers 2,182 km, an estimated 3 hours 18 minutes in the air. Measured by Pro Flight Search from live flight boards at Buffalo and Denver. Updated 19 October 2026 at 22:07 UTC.
Today, BUF → DEN
Mon 19 Oct · local times- 08:45 UA1727United Airlines Left 08:51 +6 Landed 10:12 −10
- 16:50 WN839Southwest Airlines Sched 16:50Departure not confirmed by the board DEN est. 19:05 +45sched 18:20
Checked BUF board 15:18 · DEN board 16:07
BUF
Buffalo
smooth · +8
DEN
Denver
smooth · +0
2,182 km · ~3h 18m est.
Runs mixed · 2 airlines · 14x weekly · nonstop
70% on time
of the last 10 operated BUF → DEN flights arrived within 15 minutes
Median arrival delay is +7 min. 0 of 10 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+7 minacross the last 10 operated legs
Flight time~3h 18mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 10
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest AirlinesUnited Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysUnited AirlinesUA83% on time
Flights UA1727 08:45 daily
History
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at BUF and DEN: 43% odds of a 15+ minute delay, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Buffalo to Denver route actually runs
Pro Flight Search records official board updates for nonstop BUF to DEN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Buffalo (BUF) to Denver (DEN) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/BUF-DEN
BUF to DEN questions
Is BUF–DEN running on time right now?
Smooth skies ahead. The departure side at BUF is the weaker end, route health score 94/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on BUF–DEN?
Operators schedule morning departures around 08:45 from BUF. Earlier flights typically land before destination-airport delays accumulate later in the day; check the DEN delay card to confirm conditions when you'd arrive.
How long is the flight from BUF to DEN?
Great-circle distance is 2,182 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 184–217 min gate-to-gate on this route.
How often does BUF–DEN fly?
2 carriers operate this route, around 14 flights a week between them. Compare carrier days and times in the airline list above.
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