Alaska Airlines flights from Dulles, Washington (IAD) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 17:00 Dulles, Washington (IAD) 19:56 Seattle-Tacoma (SEA)
Alaska Airlines AS 327 Non-stop Boeing 737 (73J) 5:56 Effective from 2024-05-16
Mon 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 343 Non-stop Boeing 737 (73J) 6:03 Operates only on 2024-01-08
Daily 07:00 Dulles, Washington (IAD) 10:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:00 Effective 2024-02-16 through 2024-03-13
Daily 07:00 Dulles, Washington (IAD) 09:55 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:55 Effective from 2024-05-16
Mon,Thu,Fri,Sun 16:12 Dulles, Washington (IAD) 19:03 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:51 Effective 2024-04-18 through 2024-05-13
Tue 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:03 Operates only on 2024-01-09
Daily 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2024-01-10 through 2024-01-17
Mon,Tue,Thu 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:03 Effective 2024-01-18 through 2024-01-23
Wed-Sun 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2024-01-19 through 2024-01-28
Mon,Wed,Sat,Sun 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2024-01-29 through 2024-02-05
Tue,Thu 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:03 Effective 2024-01-30 through 2024-02-01
Fri 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737-800 (73H) 6:03 Operates only on 2024-02-02
Daily 18:55 Dulles, Washington (IAD) 21:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2024-02-06 through 2024-02-14
Mon,Wed,Thu,Sat 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:00 Effective 2024-03-14 through 2024-03-23
Tue,Fri,Sun 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:00 Effective 2024-03-15 through 2024-03-24
Mon-Fri,Sun 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:00 Effective 2024-03-25 through 2024-04-05
Sat 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 6:00 Effective 2024-03-30 through 2024-04-13
Sun 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737-800 (73H) 6:00 Operates only on 2024-04-07
Mon-Fri,Sun 19:00 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 6:00 Effective 2024-04-08 through 2024-04-15
Mon,Wed 19:01 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737-800 (73H) 5:59 Valid until 2024-01-03
Tue,Thu-Sun 19:01 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:59 Effective 2024-01-02 through 2024-01-07
Sat 17:55 Dulles, Washington (IAD) 20:46 Seattle-Tacoma (SEA)
Alaska Airlines AS 396 Non-stop Boeing 737 (73J) 5:51 Effective 2024-04-20 through 2024-05-11
Mon,Thu,Fri,Sun 18:55 Dulles, Washington (IAD) 21:59 Seattle-Tacoma (SEA)
Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 6:04 Effective 2024-02-15 through 2024-03-03
Mon 18:55 Dulles, Washington (IAD) 21:59 Seattle-Tacoma (SEA)
Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 6:04 Effective 2024-03-04 through 2024-03-11
Thu,Fri,Sun 18:55 Dulles, Washington (IAD) 21:59 Seattle-Tacoma (SEA)
Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 6:04 Effective 2024-03-07 through 2024-03-10
Daily 19:00 Dulles, Washington (IAD) 21:56 Seattle-Tacoma (SEA)
Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:56 Effective from 2024-05-16
Mon-Fri,Sun 19:09 Dulles, Washington (IAD) 22:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:51 Effective 2024-04-16 through 2024-05-15
Daily 07:00 Dulles, Washington (IAD) 09:55 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 (73J) 5:55 Valid until 2024-01-07
Thu,Sat,Sun 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 (73J) 5:51 Effective 2024-03-14 through 2024-03-17
Mon-Fri 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 MAX 9 (7M9) 5:51 Effective 2024-03-15 through 2024-03-21
Thu-Sun 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 (73J) 5:51 Effective 2024-03-22 through 2024-04-04
Mon 07:40 Dulles, Washington (IAD) 10:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 MAX 9 (7M9) 5:50 Operates only on 2024-03-25
Mon-Wed 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 MAX 9 (7M9) 5:51 Effective 2024-03-26 through 2024-04-03
Mon-Wed,Fri,Sat 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 MAX 9 (7M9) 5:51 Effective 2024-04-05 through 2024-04-15
Thu,Sun 07:40 Dulles, Washington (IAD) 10:31 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 (73J) 5:51 Effective 2024-04-07 through 2024-04-14
Daily 07:40 Dulles, Washington (IAD) 10:20 Seattle-Tacoma (SEA)
Alaska Airlines AS 499 Non-stop Boeing 737 (73J) 5:40 Effective 2024-04-16 through 2024-05-15




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Alaska Airlines flights from Dulles, Washington (IAD) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS327
17:00
Dulles, Washington (IAD)

19:56
Seattle-Tacoma (SEA)
Effective from 2024-05-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:56, non-stop
Boeing 737 (73J)
Alaska Airlines AS343
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Operates only on 2024-01-08
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:03, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
07:00
Dulles, Washington (IAD)

10:00
Seattle-Tacoma (SEA)
Effective 2024-02-16 through 2024-03-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:00, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
07:00
Dulles, Washington (IAD)

09:55
Seattle-Tacoma (SEA)
Effective from 2024-05-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:55, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
16:12
Dulles, Washington (IAD)

19:03
Seattle-Tacoma (SEA)
Effective 2024-04-18 through 2024-05-13
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Operates only on 2024-01-09
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:03, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-01-10 through 2024-01-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-01-18 through 2024-01-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 6:03, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-01-19 through 2024-01-28
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-01-29 through 2024-02-05
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-01-30 through 2024-02-01
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 6:03, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Operates only on 2024-02-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 6:03, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS351
18:55
Dulles, Washington (IAD)

21:58
Seattle-Tacoma (SEA)
Effective 2024-02-06 through 2024-02-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-03-14 through 2024-03-23
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Duration: 6:00, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-03-15 through 2024-03-24
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:00, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-03-25 through 2024-04-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 6:00, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-03-30 through 2024-04-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:00, non-stop
Boeing 737 (73J)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Operates only on 2024-04-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:00, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS351
19:00
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-04-08 through 2024-04-15
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 6:00, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS351
19:01
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Valid until 2024-01-03
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:59, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS351
19:01
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-01-02 through 2024-01-07
Mon
-
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 5:59, non-stop
Boeing 737 (73J)
Alaska Airlines AS396
17:55
Dulles, Washington (IAD)

20:46
Seattle-Tacoma (SEA)
Effective 2024-04-20 through 2024-05-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS406
18:55
Dulles, Washington (IAD)

21:59
Seattle-Tacoma (SEA)
Effective 2024-02-15 through 2024-03-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 6:04, non-stop
Boeing 737 (73J)
Alaska Airlines AS406
18:55
Dulles, Washington (IAD)

21:59
Seattle-Tacoma (SEA)
Effective 2024-03-04 through 2024-03-11
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:04, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS406
18:55
Dulles, Washington (IAD)

21:59
Seattle-Tacoma (SEA)
Effective 2024-03-07 through 2024-03-10
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 6:04, non-stop
Boeing 737 (73J)
Alaska Airlines AS406
19:00
Dulles, Washington (IAD)

21:56
Seattle-Tacoma (SEA)
Effective from 2024-05-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:56, non-stop
Boeing 737 (73J)
Alaska Airlines AS406
19:09
Dulles, Washington (IAD)

22:00
Seattle-Tacoma (SEA)
Effective 2024-04-16 through 2024-05-15
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS499
07:00
Dulles, Washington (IAD)

09:55
Seattle-Tacoma (SEA)
Valid until 2024-01-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:55, non-stop
Boeing 737 (73J)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-03-14 through 2024-03-17
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
Sun
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-03-15 through 2024-03-21
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 5:51, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-03-22 through 2024-04-04
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:30
Seattle-Tacoma (SEA)
Operates only on 2024-03-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:50, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-03-26 through 2024-04-03
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:51, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-04-05 through 2024-04-15
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
-
Duration: 5:51, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:31
Seattle-Tacoma (SEA)
Effective 2024-04-07 through 2024-04-14
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 5:51, non-stop
Boeing 737 (73J)
Alaska Airlines AS499
07:40
Dulles, Washington (IAD)

10:20
Seattle-Tacoma (SEA)
Effective 2024-04-16 through 2024-05-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:40, non-stop
Boeing 737 (73J)
  • A domestic route departing from the Dulles, Washington airport (IAD) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 2299 miles, or 3699 km.
  • The timezone of the departure airport is UTC-5 , 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 5:40 and 6:04.
All IAD-SEA flights
All Alaska Airlines flights
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