Airlines with flights from Buffalo to Denver

There are 6 airlines with scheduled flights between BUF and DEN. Both Southwest and United operates non-stop flights from Buffalo Niagara International to Denver International and the flight time is 3 hours and 40 minutes.

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Direct

$Southwest Airlines from {( $airportFrom->city_name }} to Denver$

Non-stop

3h 40min

Direct

$United Airlines from {( $airportFrom->city_name }} to Denver$

Non-stop

3h 37min

Via Chicago

4h 50min

Via Chicago

5h 10min

Via Detroit

5h 18min

Via Nashville

5h 25min

Via Chicago

5h 30min

Via Baltimore

5h 45min

Via Dulles

6h 0min

Via Dallas

6h 5min

Via Charlotte

6h 7min

Via Dallas

6h 19min

Via Philadelphia

6h 25min

Via Atlanta

6h 45min

Via New York

6h 48min

Via New York

6h 50min

Via New York

7h 2min

Via New York

7h 8min

Via Saint Louis

7h 50min

Via Minneapolis

4h 54min

Via Kansas City

7h 5min

Starts 26/06

Via Minneapolis

5h 21min

NEW Starts 11/08

Via Kansas City

9h 28min

Schedules

Non-stop with Southwest Airlines

Total flight time: 3 hours and 40 minutes
Low-cost airline
Denver is a Southwest Airlines focus city (Operating base).

9 flights per week
Boeing 737MAX 8 Passenger

Boeing 737-800 (winglets) Passenger/BBJ2

Boeing 737-700 Passenger (Scimitar Winglets)

BUF

Direct

DEN

Flight

Mon

Jun 29

Tue

Jun 30

Wed

Jul 1

Thu

Jul 2

Fri

Jul 3

Sat

Jul 4

Sun

Jul 5

WN3974

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05:15

WN739

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12:40

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WN324

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16:20

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WN3413

16:40

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16:40

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WN2589

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17:25

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The timetable & schedule information was updated at 2026-04-21

Non-stop with United Airlines

Total flight time: 3 hours and 37 minutes
Denver is a United Airlines hub.

7 flights per week
Boeing 737-900 Passenger

Boeing 737-800 Passenger
Business and first class available

BUF

Direct

DEN

Flight

Mon

Jun 29

Tue

Jun 30

Wed

Jul 1

Thu

Jul 2

Fri

Jul 3

Sat

Jul 4

Sun

Jul 5

UA1727

09:00

08:45

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CHECK PRICES FOR BUF - DEN

The timetable & schedule information was updated at 2026-04-21

Via Chicago with Southwest Airlines

Total flight time: 4h 50m - 8h 45m.
Low-cost airline
Denver is a Southwest Airlines focus city (Operating base).

65 flights per week
Boeing 737MAX 8 Passenger

Boeing 737-800 (winglets) Passenger/BBJ2

Boeing 737-700 Passenger (Scimitar Winglets)

BUF

Via MDW

DEN

Flight

Mon

Jun 29

Tue

Jun 30

Wed

Jul 1

Thu

Jul 2

Fri

Jul 3

Sat

Jul 4

Sun

Jul 5

WN205
WN1866

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07:20

WN4154
WN2654

07:35

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