Alaska Airlines flights from Denver (DEN) to Seattle-Tacoma (SEA).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Mon,Tue,Thu,Sun
06:02
Denver (DEN)
08:10
Seattle-Tacoma (SEA) Alaska Airlines AS 154 Non-stop Boeing 737 (73J) 3:08 Valid until 2026-01-04 |
| Mon,Wed,Fri
06:02
Denver (DEN)
08:10
Seattle-Tacoma (SEA) Alaska Airlines AS 154 Non-stop Boeing 737 MAX 9 (7M9) 3:08 Valid until 2026-01-05 |
| Sat
06:02
Denver (DEN)
08:10
Seattle-Tacoma (SEA) Alaska Airlines AS 154 Non-stop Boeing 737-800 (73H) 3:08 Operates only on 2026-01-03 |
| Tue
06:02
Denver (DEN)
08:10
Seattle-Tacoma (SEA) Alaska Airlines AS 154 Non-stop Boeing 737 (73J) 3:08 Operates only on 2026-01-06 |
| Daily
14:58
Denver (DEN)
16:58
Seattle-Tacoma (SEA) Alaska Airlines AS 426 Non-stop Boeing 737 (73J) 3:00 Effective 2026-05-13 through 2026-06-09 |
| Daily
08:00
Denver (DEN)
09:59
Seattle-Tacoma (SEA) Alaska Airlines AS 525 Non-stop Boeing 737 (73J) 2:59 Effective 2026-05-13 through 2026-06-09 |
| Daily
15:03
Denver (DEN)
17:04
Seattle-Tacoma (SEA) Alaska Airlines AS 535 Non-stop Boeing 737 (73J) 3:01 Effective 2026-06-10 through 2026-10-02 |
| Daily
15:46
Denver (DEN)
17:52
Seattle-Tacoma (SEA) Alaska Airlines AS 535 Non-stop Boeing 737 (73J) 3:06 Valid until 2026-01-06 |
| Wed
17:09
Denver (DEN)
19:15
Seattle-Tacoma (SEA) Alaska Airlines AS 582 Non-stop Boeing 737-800 (73H) 3:06 Operates only on 2026-01-07 |
| Daily
17:49
Denver (DEN)
19:44
Seattle-Tacoma (SEA) Alaska Airlines AS 605 Non-stop Boeing 737 (73J) 2:55 Effective 2026-05-13 through 2026-06-09 |
| Sat
20:22
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Alaska Airlines AS 615 Non-stop Boeing 737 (73J) 3:08 Valid until 2026-01-03 |
| Mon,Tue,Sun
20:22
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Alaska Airlines AS 615 Non-stop Boeing 737-800 (73H) 3:08 Valid until 2026-01-06 |
| Fri
20:22
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Alaska Airlines AS 615 Non-stop Boeing 737 MAX 9 (7M9) 3:08 Operates only on 2026-01-02 |
| Daily
20:32
Denver (DEN)
22:36
Seattle-Tacoma (SEA) Alaska Airlines AS 615 Non-stop Boeing 737 (73J) 3:04 Effective 2026-06-10 through 2026-08-18 |
| Daily
17:00
Denver (DEN)
19:03
Seattle-Tacoma (SEA) Alaska Airlines AS 620 Non-stop Boeing 737 (73J) 3:03 Effective from 2026-10-03 |
| Daily
17:50
Denver (DEN)
19:53
Seattle-Tacoma (SEA) Alaska Airlines AS 620 Non-stop Boeing 737 (73J) 3:03 Effective 2026-06-10 through 2026-10-02 |
| Thu,Sat,Sun
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:09 Effective 2026-01-08 through 2026-01-18 |
| Mon
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Operates only on 2026-01-12 |
| Mon,Thu,Sat
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:09 Effective 2026-01-19 through 2026-01-24 |
| Sun
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Operates only on 2026-01-25 |
| Mon
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Effective 2026-01-26 through 2026-02-09 |
| Thu,Sat,Sun
13:34
Denver (DEN)
15:43
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:09 Effective 2026-01-29 through 2026-02-08 |
| Fri
13:37
Denver (DEN)
15:46
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Effective 2026-01-09 through 2026-02-06 |
| Wed
17:15
Denver (DEN)
19:15
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:00 Operates only on 2026-03-18 |
| Daily
17:15
Denver (DEN)
19:16
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:01 Effective 2026-03-19 through 2026-05-12 |
| Sun
18:10
Denver (DEN)
20:20
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737-700 (73G) 3:10 Operates only on 2026-03-08 |
| Tue,Thu
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:10 Effective 2026-02-12 through 2026-02-17 |
| Wed-Sun
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:10 Effective 2026-02-13 through 2026-02-22 |
| Mon,Wed-Sun
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:10 Effective 2026-02-23 through 2026-03-07 |
| Tue
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:10 Effective 2026-02-24 through 2026-03-10 |
| Mon,Wed,Thu
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 MAX 9 (7M9) 3:10 Effective 2026-03-09 through 2026-03-12 |
| Mon,Tue,Fri,Sun
18:16
Denver (DEN)
20:26
Seattle-Tacoma (SEA) Alaska Airlines AS 633 Non-stop Boeing 737 (73J) 3:10 Effective 2026-03-13 through 2026-03-17 |
| Daily
06:00
Denver (DEN)
07:59
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 2:59 Effective 2026-05-13 through 2026-06-09 |
| Daily
06:00
Denver (DEN)
08:05
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:05 Effective 2026-06-10 through 2026-10-02 |
| Mon-Sat
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 MAX 9 (7M9) 3:11 Effective 2026-01-07 through 2026-01-16 |
| Sat,Sun
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:11 Effective 2026-01-11 through 2026-01-18 |
| Mon,Wed-Sun
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 MAX 9 (7M9) 3:11 Effective 2026-01-19 through 2026-01-25 |
| Mon,Tue
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:11 Effective 2026-01-20 through 2026-01-26 |
| Mon-Wed,Fri,Sat
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 MAX 9 (7M9) 3:11 Effective 2026-01-27 through 2026-02-02 |
| Tue,Thu,Sun
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:11 Effective 2026-01-29 through 2026-02-03 |
| Mon,Wed-Sat
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 MAX 9 (7M9) 3:11 Effective 2026-02-04 through 2026-02-11 |
| Tue,Sun
07:00
Denver (DEN)
09:11
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:11 Effective 2026-02-08 through 2026-02-10 |
| Daily
07:00
Denver (DEN)
09:10
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:10 Effective 2026-02-12 through 2026-03-06 |
| Fri-Sun
07:00
Denver (DEN)
09:10
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 MAX 9 (7M9) 3:10 Effective 2026-03-07 through 2026-03-15 |
| Mon
07:00
Denver (DEN)
09:10
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737-800 (73H) 3:10 Operates only on 2026-03-09 |
| Mon-Thu
07:00
Denver (DEN)
09:10
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:10 Effective 2026-03-10 through 2026-03-17 |
| Wed
07:00
Denver (DEN)
09:00
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:00 Operates only on 2026-03-18 |
| Daily
07:00
Denver (DEN)
09:07
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:07 Effective 2026-03-19 through 2026-05-12 |
| Daily
07:00
Denver (DEN)
09:05
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:05 Effective from 2026-10-03 |
| Daily
08:00
Denver (DEN)
10:08
Seattle-Tacoma (SEA) Alaska Airlines AS 643 Non-stop Boeing 737 (73J) 3:08 Valid until 2026-01-06 |
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- A domestic route departing from the Denver airport (DEN) and arriving at Seattle-Tacoma airport (SEA).
- The flight distance is 1022 miles, or 1644 km.
- The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
- For direct flights, the flight time varies between 2:55 and 3:13.
