Airlines with flights from Seattle to Denver

There are 6 airlines with scheduled flights between SEA and DEN. United, Alaska Airlines and 4 more carriers has non-stop flights from Seattle Airport to Denver International and the flight time is 2 hours and 48 minutes.

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Schedules

United Airlines

Non-stop with United Airlines

  • Total flight time: 2 hours and 48 minutes
  • Denver is a United Airlines hub.
  • 46 flights per week
  • Airbus A321neo
    Airbus A320
    Boeing 737-800 Passenger
    Boeing 737-900 Passenger
    Boeing 737MAX 8 Passenger
  • Business and first class available
SEA
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA2601
05:00
05:00
05:00
05:00
05:00
05:00
05:00
UA1505
08:56
08:56
08:58
08:56
08:56
08:56
08:59
UA757
11:02
11:02
11:02
11:02
11:02
11:02
11:02
UA1351
12:50
12:50
12:50
12:50
12:50
12:50
12:50
UA333
14:33
14:33
14:33
14:33
14:33
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14:34
UA325
15:40
15:40
15:40
15:40
15:40
15:40
15:41
UA1218
19:54
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19:54
19:54
20:05
----
19:54
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Alaska Airlines

Non-stop with Alaska Airlines

  • Total flight time: 2 hours and 47 minutes
  • One World Alliance
  • Seattle is a Alaska Airlines hub (Primary hub).
  • 40 flights per week
  • Boeing 737-900 (winglets) Passenger/BBJ3
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 9 Passenger
    Boeing 737MAX 8 Passenger
  • Business and first class available
SEA
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AS375
08:04
08:04
08:04
08:04
08:04
08:04
08:04
AS535
11:44
11:44
11:44
11:44
11:44
11:44
11:44
AS242
13:33
13:33
13:33
13:33
13:33
13:33
13:35
AS602
16:26
16:26
16:26
16:26
16:26
16:29
16:26
AS310
19:00
19:00
19:00
19:00
19:00
19:00
19:00
AS642
20:11
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20:11
20:11
20:11
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20:11
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Southwest Airlines

Non-stop with Southwest Airlines

  • Total flight time: 2 hours and 35 minutes
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 34 flights per week
  • Boeing 737-700 Passenger (Scimitar Winglets)
    Boeing 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
SEA
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN3615
05:15
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WN4697
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06:40
06:40
15:45
15:45
06:50
05:20
WN1384
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12:55
12:55
06:30
06:30
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WN3397
07:50
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WN1921
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08:55
WN1663
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10:20
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WN2860
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18:10
18:10
10:45
10:45
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WN4507
----
11:10
11:10
13:55
13:55
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13:55
WN3616
12:20
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WN428
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12:40
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WN3617
14:35
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WN196
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17:40
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WN3485
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18:15
18:15
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WN2522
----
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18:45
WN4845
19:30
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SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Delta Air Lines

Non-stop with Delta Air Lines

  • Total flight time: 2 hours and 48 minutes
  • Sky Team Alliance
  • Seattle is a Delta Air Lines hub.
  • 21 flights per week
  • Airbus A220-300
    Boeing 737-900 Passenger
  • Business and first class available
SEA
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
DL1358
08:40
08:40
08:40
08:40
08:40
09:30
08:40
DL2543
13:55
13:55
13:55
13:55
13:55
13:55
13:55
DL2851
20:07
20:07
20:07
20:07
20:07
20:07
20:07
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Frontier Airlines

Non-stop with Frontier Airlines

  • Total flight time: 2 hours and 53 minutes
  • Low-cost airline
  • Denver is a Frontier Airlines focus city (Operating base).
  • 14 flights per week
  • Airbus A320neo
    Airbus A321neo
    Airbus A320
    Airbus A321
SEA
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
F93406
12:35
12:35
14:22
14:22
14:22
14:22
14:22
F91176
19:06
19:06
19:06
19:06
19:06
19:06
19:06
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

American Airlines

Non-stop with American Airlines

  • Total flight time: 2 hours and 50 minutes
  • One World Alliance
  • First class available
SEA
Direct
DEN
 
Flight
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Alaska Airlines

Via Portland with Alaska Airlines

  • Total flight time: 4h 15m - 6h 18m.
  • One World Alliance
  • Seattle is a Alaska Airlines hub (Primary hub).
  • 68 flights per week
  • Boeing 737-900 (winglets) Passenger/BBJ3
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 9 Passenger
    Boeing 737MAX 8 Passenger
SEA
 
Via PDX
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AS2181
AS1809
12:05
12:05
12:05
12:05
12:05
12:05
12:05
AS686
AS1627
15:55
15:55
15:55
15:55
15:55
15:55
15:55
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Delta Air Lines

Via Salt Lake City with Delta Air Lines

  • Total flight time: 4h 29m - 6h 43m.
  • Sky Team Alliance
  • Seattle is a Delta Air Lines hub.
  • 99 flights per week
  • Airbus A220-300
    Boeing 737-900 Passenger
SEA
 
Via SLC
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
DL1128
DL1553
05:25
05:25
05:25
05:25
05:25
05:25
05:25
DL2858
DL1623
07:15
07:15
07:15
07:15
07:15
07:15
07:15
DL1016
DL1623
09:26
09:26
09:26
09:26
09:26
09:26
09:26
DL1120
DL1586
13:30
13:30
13:30
13:30
13:30
13:30
13:30
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Frontier Airlines

Via Salt Lake City with Frontier Airlines

  • Total flight time: 4h 34m - 4h 41m.
  • Low-cost airline
  • Denver is a Frontier Airlines focus city (Operating base).
  • 12 flights per week
  • Airbus A320neo
    Airbus A321neo
    Airbus A320
    Airbus A321
SEA
 
Via SLC
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

Southwest Airlines

Via Sacramento with Southwest Airlines

  • Total flight time: 4h 40m - 9h 10m.
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 84 flights per week
  • Boeing 737-700 Passenger (Scimitar Winglets)
    Boeing 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
SEA
 
Via SMF
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN3542
WN4156
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05:55
05:55
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WN3542
WN4776
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06:00
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WN3630
WN3774
07:35
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WN3543
WN2344
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09:45
09:45
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WN4652
WN4637
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12:25
WN3544
WN1171
----
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15:25
15:25
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WN1665
WN1111
----
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16:45
SHOW RETURN SCHEDULE
CHECK PRICES FOR SEA - DEN

The timetable & schedule information was updated at 2026-04-22

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Flight data on this page was last updated on 2026-07-21
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