Airlines with flights from Denver to Seattle

There are 6 airlines with scheduled flights between DEN and SEA. United, Alaska Airlines and 4 more carriers has non-stop flights from Denver International to Seattle Airport and the flight time is 3 hours.

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Schedules

United Airlines

Non-stop with United Airlines

  • Total flight time: 3 hours
  • Denver is a United Airlines hub.
  • 46 flights per week
  • Airbus A320
    Boeing 737-800 Passenger
    Boeing 737-900 Passenger
    Airbus A321neo
    Boeing 737MAX 8 Passenger
    Boeing 737MAX 9 Passenger
  • Business and first class available
DEN
Direct
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA1482
06:00
06:00
06:00
06:00
06:00
06:00
06:00
UA2271
08:01
08:01
08:01
08:01
08:01
07:50
08:01
UA1424
11:21
11:21
11:21
11:21
11:21
11:25
11:22
UA2164
14:00
14:00
14:00
14:00
14:00
----
14:00
UA2013
15:50
15:58
15:58
15:58
15:58
15:58
15:45
UA360
19:10
19:10
19:10
19:10
19:10
19:20
19:10
UA2651
21:10
----
21:10
21:10
21:10
----
21:10
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Alaska Airlines

Non-stop with Alaska Airlines

  • Total flight time: 3 hours and 1 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
DEN
Direct
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AS643
06:02
06:02
06:02
06:02
06:02
06:02
06:02
AS317
08:40
08:40
08:40
08:40
08:40
08:40
08:45
AS381
12:55
12:55
12:55
12:55
12:55
12:55
12:55
AS535
16:36
16:36
16:36
16:36
16:36
16:36
16:36
AS249
18:15
18:15
18:18
18:15
18:15
18:15
18:21
AS493
21:08
----
21:08
21:08
21:08
----
21:08
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Southwest Airlines

Non-stop with Southwest Airlines

  • Total flight time: 3 hours
  • 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
DEN
Direct
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN4800
----
21:05
21:05
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06:30
WN1713
07:45
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WN4870
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08:45
WN2396
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09:05
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WN4462
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09:05
09:05
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WN883
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09:15
09:15
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WN3051
10:05
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WN888
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11:25
11:25
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11:15
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WN3954
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11:40
WN4130
12:30
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WN1536
----
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13:00
13:00
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WN1670
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15:40
15:40
19:35
19:50
WN4514
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16:15
16:15
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WN4980
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16:20
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WN3544
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16:45
WN555
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18:50
18:50
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WN1716
19:50
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WN3415
----
----
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20:55
20:55
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WN3856
21:10
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----
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SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Delta Air Lines

Non-stop with Delta Air Lines

  • Total flight time: 3 hours and 11 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
DEN
Direct
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
DL1731
06:20
06:20
06:20
06:20
06:20
06:20
06:20
DL1358
13:21
13:21
13:21
13:21
13:21
14:20
13:21
DL2543
18:43
18:43
18:43
18:43
18:43
18:43
18:43
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Frontier Airlines

Non-stop with Frontier Airlines

  • Total flight time: 3 hours and 7 minutes
  • Low-cost airline
  • Denver is a Frontier Airlines focus city (Operating base).
  • 14 flights per week
  • Airbus A321
    Airbus A321neo
    Airbus A320neo
    Airbus A320
DEN
Direct
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
F94545
07:13
07:13
07:00
07:00
07:00
07:00
07:00
F91175
09:13
09:13
11:00
11:00
11:00
11:00
11:00
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

American Airlines

Non-stop with American Airlines

  • Total flight time: 3 hours
  • One World Alliance
  • First class available
DEN
Direct
SEA
 
Flight
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Delta Air Lines

Via Salt Lake City with Delta Air Lines

  • Total flight time: 4h 22m - 6h 47m.
  • Sky Team Alliance
  • Seattle is a Delta Air Lines hub.
  • 112 flights per week
  • Airbus A220-300
    Boeing 737-900 Passenger
DEN
 
Via SLC
 
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
DL2544
DL2874
05:40
05:40
05:40
05:40
05:40
05:40
05:40
DL1553
DL2817
12:43
12:43
12:43
12:43
12:43
12:43
12:43
DL2663
DL2998
19:09
19:09
19:09
19:09
19:09
18:35
19:09
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Alaska Airlines

Via Portland with Alaska Airlines

  • Total flight time: 4h 22m - 6h 14m.
  • One World Alliance
  • Seattle is a Alaska Airlines hub (Primary hub).
  • 63 flights per week
  • Boeing 737-900 (winglets) Passenger/BBJ3
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 9 Passenger
    Boeing 737MAX 8 Passenger
DEN
 
Via PDX
 
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AS1626
AS3431
08:00
08:00
08:00
08:00
08:00
08:00
08:00
AS684
AS3408
12:02
12:02
12:02
12:02
12:02
----
12:02
AS1807
AS2421
19:05
19:05
19:05
19:05
19:05
19:05
19:05
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Southwest Airlines

Via Sacramento with Southwest Airlines

  • Total flight time: 5h 05m - 9h 20m.
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 70 flights per week
  • Boeing 737-700 Passenger (Scimitar Winglets)
    Boeing 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
DEN
 
Via SMF
 
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN1738
WN1739
07:55
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WN164
WN3743
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08:35
WN3421
WN3743
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08:55
WN2270
WN563
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09:00
09:00
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WN743
WN139
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----
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09:10
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WN743
WN563
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10:30
10:30
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WN505
WN3096
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13:30
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WN2270
WN3743
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14:15
14:15
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WN4825
WN2508
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15:30
WN4096
WN555
15:50
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----
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WN3142
WN3096
----
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16:30
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

Southwest Airlines

Via Las Vegas with Southwest Airlines

  • Total flight time: 5h 15m - 10h 10m.
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 140 flights per week
  • Boeing 737-700 Passenger (Scimitar Winglets)
    Boeing 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
DEN
 
Via LAS
 
SEA
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN3106
WN739
05:50
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WN1523
WN2283
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06:05
WN1525
WN615
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----
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07:35
WN198
WN279
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08:05
08:05
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WN1708
WN1719
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09:00
09:00
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WN164
WN4512
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----
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09:10
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WN1526
WN4512
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10:55
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WN1241
WN2325
----
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12:40
12:40
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WN921
WN4073
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14:15
WN1771
WN4073
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----
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14:30
WN1541
WN4073
----
----
----
----
----
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15:00
WN4365
WN2940
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15:30
15:30
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WN403
WN3604
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16:05
16:05
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WN4136
WN412
16:10
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WN2455
WN4073
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16:15
WN4160
WN412
16:55
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WN3775
WN1646
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18:05
WN2782
WN412
18:10
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WN1528
WN1646
----
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18:15
WN138
WN412
18:50
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WN1565
WN412
19:00
----
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WN1529
WN3604
----
----
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19:00
19:00
----
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WN1566
WN412
20:35
----
----
----
----
----
----
SHOW RETURN SCHEDULE
CHECK PRICES FOR DEN - SEA

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

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