Airlines with flights from Denver to Buffalo

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

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Schedules

Southwest Airlines

Non-stop with Southwest Airlines

  • Total flight time: 3 hours
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 9 flights per week
  • Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 8 Passenger
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
Direct
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
WN1083
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12:00
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WN958
12:10
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12:10
12:10
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WN117
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12:45
WN2259
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13:25
13:25
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WN1761
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19:05
WN2708
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19:25
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SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

United Airlines

Non-stop with United Airlines

  • Total flight time: 3 hours and 14 minutes
  • Denver is a United Airlines hub.
  • 7 flights per week
  • Boeing 737-800 Passenger
  • Business and first class available
DEN
Direct
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
UA248
17:40
17:40
17:40
17:40
17:40
17:33
17:40
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

Southwest Airlines

Via Chicago with Southwest Airlines

  • Total flight time: 4h 30m - 8h 35m.
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 95 flights per week
  • Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 8 Passenger
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
 
Via MDW
 
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
WN1598
WN1655
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05:50
WN1517
WN958
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06:05
06:05
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WN114
WN1655
07:10
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07:10
07:10
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07:15
WN1183
WN807
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07:15
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WN1373
WN958
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07:40
07:40
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WN280
WN958
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07:40
07:40
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WN2820
WN2730
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10:05
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WN1524
WN2730
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12:05
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WN1276
WN2730
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12:15
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WN4262
WN2659
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12:15
12:15
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WN1535
WN4110
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12:20
WN1524
WN2659
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12:20
12:20
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WN1524
WN4110
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12:55
WN1539
WN4110
13:00
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13:00
13:00
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WN1601
WN4110
13:00
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13:00
13:00
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WN556
WN4110
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13:00
WN1228
WN4110
13:20
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13:20
13:20
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WN1603
WN2659
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13:30
13:30
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WN1603
WN4110
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14:40
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

United Airlines

Via Chicago with United Airlines

  • Total flight time: 4h 55m - 7h 26m.
  • Denver is a United Airlines hub.
  • 95 flights per week
  • Boeing 737-800 Passenger
DEN
 
Via ORD
 
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
UA1377
UA4382
06:00
06:00
06:00
06:00
06:00
06:00
06:00
UA1928
UA2226
07:40
07:40
07:40
07:40
07:40
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07:40
UA1928
UA5513
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07:40
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UA2430
UA2226
08:00
08:00
08:00
08:00
08:00
----
08:00
UA2329
UA2226
09:35
09:35
09:35
09:35
09:35
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09:35
UA2329
UA5513
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----
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09:35
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UA2865
UA1335
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----
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11:15
11:15
11:15
11:15
UA617
UA1335
13:25
13:25
13:25
13:25
13:25
13:25
13:25
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

Southwest Airlines

Via Nashville with Southwest Airlines

  • Total flight time: 4h 55m - 8h 25m.
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 50 flights per week
  • Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 8 Passenger
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
 
Via BNA
 
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
WN3456
WN4728
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05:40
05:40
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WN1648
WN4728
07:05
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07:05
07:05
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WN302
WN4728
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----
----
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10:05
----
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

American Airlines

Via Chicago with American Airlines

  • Total flight time: 5h 07m - 7h 25m.
  • One World Alliance
  • 79 flights per week
DEN
 
Via ORD
 
BUF
 
Flight
Mon
Jun 22
Tue
Jun 23
Wed
Jun 24
Thu
Jun 25
Fri
Jun 26
Sat
Jun 27
Sun
Jun 28
AA1747
AA4913
09:06
09:06
09:06
09:06
09:06
09:06
09:06
AA1760
AA564
14:22
14:22
14:22
14:22
14:22
14:22
14:22
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - BUF

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

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Flight data on this page was last updated on 2026-06-08
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