Denver (DEN) to Buffalo (BUF) flights
Nonstop from Denver International to Buffalo Niagara International Airport: distance, flying time, which airlines fly it and how often.
Distance
2,182km
1,356 mi, great circle
Flying time
3h 16m
typical, gate to gate
Flights a day
2.1
average, November 2026
Airlines
2
passenger airlines
Airlines flying DEN to BUF
Route map
The shortest path over the Earth's surface. Actual tracks vary with winds and airspace. Map © OpenStreetMap contributors.
Cheapest recent fare
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Both directions
Frequently asked questions
How long is the flight from Denver to Buffalo?
About 3h 16m gate to gate for the 2,182 km (1,356 mile) trip, estimated from distance. Schedules vary by airline and season, and winds can add or save time.
Which airlines fly nonstop from DEN to BUF?
Southwest Airlines and United Airlines, with about 2.1 flights a day between them in our data (AeroDataBox, November 2026).