Denver (DEN) to Buffalo (BUF) flights
2 airlines fly nonstop from Denver (DEN) to Buffalo (BUF): Southwest Airlines and United Airlines. The two airports are 1,356 miles (2,182 km) apart. United Airlines is in Star Alliance. There are also 24 ways to fly it with one stop, through Chicago, Detroit and Chicago and more.
Airlines flying nonstop from DEN to BUF
- Southwest AirlinesNot in an allianceWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book DEN to BUF with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
DEN to BUF with one stop
24 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
+1 - Via Chicago (MDW)Southwest Airlines the whole way
- Via Minneapolis (MSP)Delta Air Lines and Southwest Airlines the whole way+2
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Dulles (IAD)United Airlines the whole way
- Via Washington (DCA)Frontier Airlines and United Airlines, then American Airlines
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Philadelphia (PHL)American Airlines the whole way+1
- Via Dallas (DFW)American Airlines the whole way
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Charlotte (CLT)American Airlines the whole way+1
- Via New York (EWR)United Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines and Frontier Airlines the whole way+1
- Via New York (LGA)Delta Air Lines the whole way
DEN to BUF: common questions
Which airlines fly nonstop from DEN to BUF?
Southwest Airlines and United Airlines (Star Alliance) fly nonstop from Denver (DEN) to Buffalo (BUF).
How far is Denver from Buffalo by plane?
Denver (DEN) and Buffalo (BUF) are 1,356 miles (2,182 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book DEN to BUF award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does DEN to BUF cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for DEN to BUF with taxes and fees.
Where can I connect between Denver and Buffalo?
The most direct connections are through Chicago (ORD), Detroit (DTW), Chicago (MDW), Minneapolis (MSP) and Nashville (BNA). On 23 of them the same airline flies both flights, for example American Airlines through Chicago.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.