Southwest AirlinesWN38% on time
Flights WN3510 10:45 Su · WN3306 11:10 Sa · WN398 13:40 Tu We · WN626 16:05 Mo Th Fr
live
Direct flights from Denver (DEN) to Buffalo (BUF): 14 nonstop departures observed each week across 2 airlines. 60% of the last 15 operated flights arrived within 15 minutes of schedule. The median arrival is 3 minutes early. No cancellations were recorded across the 15 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 Denver and Buffalo. Updated 13 September 2026 at 02:38 UTC.
DEN
Denver
smooth · +1
BUF
Buffalo
smooth · +0
2,182 km · ~3h 18m est.
Runs mixed · 2 airlines · 14x weekly · nonstop
60% on time
of the last 15 operated DEN → BUF flights arrived within 15 minutes
Median arrival delay is −3 min. 0 of 15 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−3 minacross the last 15 operated legs
Flight time~3h 18mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 15
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 AirlinesUA86% on time
Flights UA248 17:25 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 DEN and BUF: 44% odds of a 15+ minute delay and around +10 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Denver to Buffalo route actually runs
Pro Flight Search records official board updates for nonstop DEN to BUF 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 — Denver (DEN) to Buffalo (BUF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/DEN-BUF
DEN to BUF questions
Is DEN–BUF running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on DEN–BUF?
Operators schedule morning departures around 10:45 and evening departures around 17:25 from DEN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BUF delay card to confirm conditions when you'd arrive.
How long is the flight from DEN to BUF?
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 DEN–BUF fly?
2 carriers operate this route, around 15 flights a week between them. Compare carrier days and times in the airline list above.
.