Airlines with flights from Denver to Seattle

There are 6 airlines with scheduled flights between DEN and SEA. United, Southwest 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
    Boeing 737MAX 8 Passenger
    Airbus A321neo
  • Business and first class available
DEN
Direct
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
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
07:45
08:01
UA1424
11:24
11:24
11:24
11:24
11:24
11:24
11:24
UA2164
13:55
13:55
13:55
13:55
13:55
----
13:55
UA2013
15:58
15:58
15:58
15:58
15:58
15:58
15:41
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

Southwest Airlines

Non-stop with Southwest Airlines

  • Total flight time: 3 hours
  • Low-cost airline
  • Denver is a Southwest Airlines focus city (Operating base).
  • 40 flights per week
  • Boeing 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
Direct
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN1713
07:45
08:05
08:05
07:45
07:45
----
07:45
WN1780
----
----
----
----
----
08:00
----
WN3051
10:05
10:05
10:05
10:05
10:05
----
12:35
WN4130
12:30
12:55
12:55
12:30
12:30
11:20
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WN4030
----
----
----
----
----
----
15:45
WN1716
19:50
18:15
18:15
19:50
19:50
18:00
----
WN760
----
----
----
----
----
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19:25
WN3856
21:10
21:35
21:35
21:10
21:10
22:20
21:10
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 8 minutes
  • Sky Team Alliance
  • Seattle is a Delta Air Lines hub.
  • 37 flights per week
  • Airbus A220-300
  • Business and first class available
DEN
Direct
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
DL1731
06:30
06:30
06:30
06:30
06:30
06:30
06:30
DL1358
13:15
13:15
13:15
13:15
13:15
13:15
13:15
DL2543
18:41
18:41
18:41
18:41
18:41
18:41
18:41
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 2 minutes
  • One World Alliance
  • Seattle is a Alaska Airlines hub (Primary hub).
  • 35 flights per week
  • Boeing 737MAX 9 Passenger
    Boeing 737-900 (winglets) Passenger/BBJ3
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 8 Passenger
  • Business and first class available
DEN
Direct
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
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
18:15
18:15
18:15
18:15
18:21
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 5 minutes
  • Low-cost airline
  • Denver is a Frontier Airlines focus city (Operating base).
  • 17 flights per week
  • Airbus A321neo
    Airbus A321
DEN
Direct
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
F94545
07:45
07:45
07:45
07:45
07:45
07:45
07:45
F91175
12:14
12:14
12:14
12:14
12:14
12:14
12:14
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
DEN
 
Via SLC
 
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
DL2544
DL2874
05:40
05:40
05:40
05:40
05:40
05:40
05:40
DL1581
DL2995
07:05
07:05
07:05
07:05
07:05
07:05
07:05
DL1553
DL2817
12:43
12:43
12:43
12:43
12:43
12:43
12:43
DL2663
DL2998
19:00
19:00
19:00
19:00
19:00
----
19:00
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 737MAX 9 Passenger
    Boeing 737-900 (winglets) Passenger/BBJ3
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737MAX 8 Passenger
DEN
 
Via PDX
 
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
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 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
 
Via SMF
 
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN1738
WN1166
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----
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----
----
----
07:45
WN1699
WN4920
----
----
----
----
----
07:55
----
WN1738
WN1739
07:55
----
----
07:55
07:55
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----
WN300
WN2720
----
08:00
08:00
----
----
----
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WN1890
WN2250
----
15:15
15:15
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----
----
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WN1301
WN1846
----
----
----
----
----
----
15:35
WN4096
WN555
15:50
----
----
15:50
15:50
----
16:55
WN2543
WN4985
----
----
----
----
----
16:10
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WN1890
WN1846
----
----
----
----
----
----
17:00
WN1748
WN4985
----
----
----
----
----
17:05
----
WN4096
WN2250
----
18:05
18:05
----
----
----
----
WN136
WN1846
----
----
----
----
----
----
18:45
WN136
WN2250
----
19:25
19:25
----
----
----
----
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 737MAX 8 Passenger
    Boeing 737-800 (winglets) Passenger/BBJ2
    Boeing 737-700 Passenger (Scimitar Winglets)
DEN
 
Via LAS
 
SEA
 
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN3106
WN739
05:50
----
----
05:50
05:50
05:45
----
WN2412
WN1451
----
06:00
06:00
----
----
----
----
WN439
WN739
----
----
----
----
----
----
07:45
WN2192
WN739
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----
----
----
----
----
08:35
WN170
WN4135
----
----
----
----
11:20
----
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WN2274
WN4717
----
11:45
11:45
----
----
----
----
WN4461
WN4717
----
12:35
12:35
----
----
----
----
WN1562
WN4135
----
----
----
----
13:15
----
----
WN2016
WN2117
----
----
----
----
----
----
13:45
WN4523
WN4135
----
----
----
----
14:00
----
----
WN1562
WN4717
----
14:50
14:50
----
----
----
----
WN3333
WN4196
----
15:45
15:45
----
----
----
----
WN4136
WN412
16:10
----
----
16:10
16:10
----
----
WN4160
WN412
16:55
----
----
16:55
16:55
----
----
WN2782
WN412
18:10
----
----
18:10
18:10
----
----
WN1565
WN4196
----
----
----
----
----
----
18:45
WN138
WN412
18:50
----
----
18:50
18:50
----
----
WN1565
WN412
19:00
----
----
19:00
19:00
----
----
WN204
WN1174
----
----
----
----
----
19:35
----
WN1566
WN4196
----
20:05
20:05
----
----
----
----
WN1566
WN412
20:35
----
----
20:35
20:35
----
----
WN1566
WN1174
----
----
----
----
----
20:40
----
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 2026-06-02
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