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

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 19:01 Washington Dulles (IAD) 22:00 Seattle-Tacoma (SEA)
American Airlines AA 7458 Non-stop Boeing 737 (737) 5:59 Effective 2026-04-22 through 2026-05-12
Codeshare flight, operated by Alaska Airlines.(AS 737)
Daily 19:15 Washington Dulles (IAD) 22:00 Seattle-Tacoma (SEA)
American Airlines AA 7458 Non-stop Boeing 737 (737) 5:45 Effective 2026-05-13 through 2026-06-09
Codeshare flight, operated by Alaska Airlines.(AS 737)
Daily 19:18 Washington Dulles (IAD) 22:06 Seattle-Tacoma (SEA)
American Airlines AA 7458 Non-stop Boeing 737 (737) 5:48 Effective from 2026-06-10
Codeshare flight, operated by Alaska Airlines.(AS 737)
Daily 06:30 Washington Dulles (IAD) 09:10 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 5:40 Effective 2026-05-13 through 2026-06-09
Codeshare flight, operated by Alaska Airlines.(AS 351)
Daily 06:30 Washington Dulles (IAD) 09:19 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 5:49 Effective from 2026-06-10
Codeshare flight, operated by Alaska Airlines.(AS 351)
Wed 07:00 Washington Dulles (IAD) 09:45 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 5:45 Operates only on 2026-03-18
Codeshare flight, operated by Alaska Airlines.(AS 351)
Daily 07:00 Washington Dulles (IAD) 09:54 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 5:54 Effective 2026-03-19 through 2026-05-12
Codeshare flight, operated by Alaska Airlines.(AS 351)
Daily 07:05 Washington Dulles (IAD) 10:05 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 6:00 Effective 2026-02-13 through 2026-03-17
Codeshare flight, operated by Alaska Airlines.(AS 351)
Daily 07:33 Washington Dulles (IAD) 10:20 Seattle-Tacoma (SEA)
American Airlines AA 7484 Non-stop Boeing 737 (737) 5:47 Valid until 2026-01-06
Codeshare flight, operated by Alaska Airlines.(AS 351)
Mon,Tue,Thu-Sun 18:43 Washington Dulles (IAD) 21:32 Seattle-Tacoma (SEA)
American Airlines AA 9287 Non-stop Boeing 737 (737) 5:49 Valid until 2026-01-06
Codeshare flight, operated by Alaska Airlines.(AS 409)
Wed 18:04 Washington Dulles (IAD) 21:08 Seattle-Tacoma (SEA)
American Airlines AA 9349 Non-stop Boeing 737 MAX 8 (7M8) 6:04 Operates only on 2026-01-07
Codeshare flight, operated by Alaska Airlines.(AS 406)
Daily 18:04 Washington Dulles (IAD) 21:08 Seattle-Tacoma (SEA)
American Airlines AA 9349 Non-stop Boeing 737 (737) 6:04 Effective 2026-01-08 through 2026-02-11
Codeshare flight, operated by Alaska Airlines.(AS 406)
Mon,Thu,Fri,Sun 18:27 Washington Dulles (IAD) 21:35 Seattle-Tacoma (SEA)
American Airlines AA 9349 Non-stop Boeing 737 (737) 6:08 Effective 2026-02-12 through 2026-03-16
Codeshare flight, operated by Alaska Airlines.(AS 406)
Wed 18:55 Washington Dulles (IAD) 21:40 Seattle-Tacoma (SEA)
American Airlines AA 9349 Non-stop Boeing 737 (737) 5:45 Operates only on 2026-03-18
Codeshare flight, operated by Alaska Airlines.(AS 406)
Daily 19:01 Washington Dulles (IAD) 22:00 Seattle-Tacoma (SEA)
American Airlines AA 9349 Non-stop Boeing 737 (737) 5:59 Effective 2026-03-19 through 2026-04-21
Codeshare flight, operated by Alaska Airlines.(AS 406)
Daily 09:00 Washington Dulles (IAD) 11:39 Seattle-Tacoma (SEA)
American Airlines AA 9392 Non-stop Boeing 737 (737) 5:39 Effective 2026-05-13 through 2026-06-09
Codeshare flight, operated by Alaska Airlines.(AS 375)
Daily 09:00 Washington Dulles (IAD) 11:50 Seattle-Tacoma (SEA)
American Airlines AA 9392 Non-stop Boeing 737 (737) 5:50 Effective from 2026-06-10
Codeshare flight, operated by Alaska Airlines.(AS 375)
Daily 10:00 Washington Dulles (IAD) 12:54 Seattle-Tacoma (SEA)
American Airlines AA 9392 Non-stop Boeing 737 (737) 5:54 Effective 2026-04-22 through 2026-05-12
Codeshare flight, operated by Alaska Airlines.(AS 375)


American Airlines flights from Washington Dulles (IAD) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

Effective 2026-04-22 through 2026-05-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 737)
Duration: 5:59, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 737)
Duration: 5:45, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective from 2026-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 737)
Duration: 5:48, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 5:40, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective from 2026-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 5:49, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Operates only on 2026-03-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 5:45, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-03-19 through 2026-05-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 5:54, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-02-13 through 2026-03-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 6:00, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Valid until 2026-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 351)
Duration: 5:47, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Valid until 2026-01-06
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 409)
Duration: 5:49, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Operates only on 2026-01-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 406)
Duration: 6:04, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Effective 2026-01-08 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 406)
Duration: 6:04, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-02-12 through 2026-03-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 406)
Duration: 6:08, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Operates only on 2026-03-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 406)
Duration: 5:45, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-03-19 through 2026-04-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 406)
Duration: 5:59, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 375)
Duration: 5:39, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective from 2026-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 375)
Duration: 5:50, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Effective 2026-04-22 through 2026-05-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 375)
Duration: 5:54, non-stop
Boeing 737 (737)
  • A domestic route departing from the Washington Dulles 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 5:39 and 6:08.