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

FLIGHT SCHEDULE
Direct Codeshare Flights:
Wed,Fri 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:56 Effective 2026-01-07 through 2026-01-30 Codeshare flight, operated by Alaska Airlines.(AS 737)
Thu,Sun 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 8 (7M8) 4:56 Effective 2026-01-08 through 2026-02-05 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue,Sat 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737-800 (73H) 4:56 Effective 2026-01-10 through 2026-02-07 Codeshare flight, operated by Alaska Airlines.(AS 737)
Mon 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:56 Effective 2026-01-12 through 2026-01-26 Codeshare flight, operated by Alaska Airlines.(AS 737)
Mon,Wed,Fri,Sun 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:56 Effective 2026-02-02 through 2026-02-11 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue 08:30 Seattle-Tacoma (SEA) 16:26 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 8 (7M8) 4:56 Operates only on 2026-02-10 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue,Wed,Sat 09:27 Seattle-Tacoma (SEA) 17:20 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:53 Effective 2026-02-14 through 2026-03-07 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue,Sat 09:27 Seattle-Tacoma (SEA) 17:20 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:53 Effective 2026-03-10 through 2026-03-14 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue,Wed 09:27 Seattle-Tacoma (SEA) 17:20 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:53 Effective 2026-03-11 through 2026-03-17 Codeshare flight, operated by Alaska Airlines.(AS 737)
Tue 09:34 Seattle-Tacoma (SEA) 17:43 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 5:09 Operates only on 2026-01-06 Codeshare flight, operated by Alaska Airlines.(AS 406)
Mon,Thu,Fri,Sun 21:45 Seattle-Tacoma (SEA) 05:40 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:55 Effective 2026-02-12 through 2026-03-01 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Mon 21:45 Seattle-Tacoma (SEA) 05:40 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:55 Operates only on 2026-03-02 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Mon,Thu,Fri,Sun 21:45 Seattle-Tacoma (SEA) 05:40 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:55 Effective 2026-03-05 through 2026-03-16 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Wed 21:55 Seattle-Tacoma (SEA) 05:55 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 5:00 Operates only on 2026-03-18 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Daily 21:55 Seattle-Tacoma (SEA) 05:49 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:54 Effective 2026-03-19 through 2026-05-12 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Mon,Tue,Thu-Sat 22:14 Seattle-Tacoma (SEA) 06:13 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Valid until 2026-01-03 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Mon,Sun 22:14 Seattle-Tacoma (SEA) 06:13 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:59 Effective 2026-01-04 through 2026-01-05 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.
Daily 23:30 Seattle-Tacoma (SEA) 07:36 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 5:06 Effective 2026-05-13 through 2026-06-09 Codeshare flight, operated by Alaska Airlines.(AS 363) The flight arrives 1 day after departure.
Daily 23:30 Seattle-Tacoma (SEA) 07:28 Washington Dulles (IAD) JAL JL 5440 Non-stop Boeing 737 (73J) 4:58 Effective from 2026-06-10 Codeshare flight, operated by Alaska Airlines.(AS 367) The flight arrives 1 day after departure.

A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Washington Dulles airport (IAD).
The flight distance is 2299 miles, or 3699 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . 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 4:53 and 5:09.

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FLIGHT SCHEDULE

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Effective 2026-01-07 through 2026-01-30

Mon
-

Tue
-

Wed

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Effective 2026-01-08 through 2026-02-05

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737-800 (73H)

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Effective 2026-01-12 through 2026-01-26

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Effective 2026-02-02 through 2026-02-11

Mon

Tue
-

Wed

Thu
-

Fri

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

JAL JL5440

08:30

Seattle-Tacoma (SEA)

16:26

Washington Dulles (IAD)

Operates only on 2026-02-10

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:56, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

JAL JL5440

09:27

Seattle-Tacoma (SEA)

17:20

Washington Dulles (IAD)

Effective 2026-02-14 through 2026-03-07

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:53, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

JAL JL5440

09:27

Seattle-Tacoma (SEA)

17:20

Washington Dulles (IAD)

Effective 2026-03-10 through 2026-03-14

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:53, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

JAL JL5440

09:27

Seattle-Tacoma (SEA)

17:20

Washington Dulles (IAD)

Effective 2026-03-11 through 2026-03-17

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 737)

Duration: 4:53, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

JAL JL5440

09:34

Seattle-Tacoma (SEA)

17:43

Washington Dulles (IAD)

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 406)

Duration: 5:09, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

JAL JL5440

21:45

Seattle-Tacoma (SEA)

05:40(+1)

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:55, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

21:45

Seattle-Tacoma (SEA)

05:40(+1)

Washington Dulles (IAD)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:55, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

21:45

Seattle-Tacoma (SEA)

05:40(+1)

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:55, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

21:55

Seattle-Tacoma (SEA)

05:55(+1)

Washington Dulles (IAD)

Operates only on 2026-03-18

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 5:00, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

21:55

Seattle-Tacoma (SEA)

05:49(+1)

Washington Dulles (IAD)

Effective 2026-03-19 through 2026-05-12

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:54, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

22:14

Seattle-Tacoma (SEA)

06:13(+1)

Washington Dulles (IAD)

Valid until 2026-01-03

Mon

Tue

Wed
-

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:59, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

22:14

Seattle-Tacoma (SEA)

06:13(+1)

Washington Dulles (IAD)

Effective 2026-01-04 through 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:59, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

23:30

Seattle-Tacoma (SEA)

07:36(+1)

Washington Dulles (IAD)

Effective 2026-05-13 through 2026-06-09

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 363)

Duration: 5:06, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

JAL JL5440

23:30

Seattle-Tacoma (SEA)

07:28(+1)

Washington Dulles (IAD)

Effective from 2026-06-10

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 367)

Duration: 4:58, non-stop
Boeing 737 (73J)
The flight arrives 1 day after departure.

A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Washington Dulles airport (IAD).
The flight distance is 2299 miles, or 3699 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . 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 4:53 and 5:09.

All SEA-IAD flights

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