All airlines flying from Seattle-Tacoma (SEA) to Washington Dulles (IAD).
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| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Daily
23:00
Seattle-Tacoma (SEA)
07:08
Washington Dulles (IAD) United Airlines UA 264 Non-stop Boeing 737 MAX 9 (7M9) 5:08 Effective 2026-04-30 through 2026-05-20 The flight arrives 1 day after departure. |
| Daily
23:20
Seattle-Tacoma (SEA)
07:13
Washington Dulles (IAD) United Airlines UA 264 Non-stop Boeing 737-900 (739) 4:53 Effective 2026-05-21 through 2026-08-17 The flight arrives 1 day after departure. |
| Daily
15:35
Seattle-Tacoma (SEA)
23:52
Washington Dulles (IAD) Alaska Airlines AS 348 Non-stop Boeing 737 (73J) 5:17 Effective 2026-04-22 through 2026-05-12 |
| Daily
15:59
Seattle-Tacoma (SEA)
23:59
Washington Dulles (IAD) Alaska Airlines AS 348 Non-stop Boeing 737 (73J) 5:00 Effective from 2026-06-10 |
| Daily
16:00
Seattle-Tacoma (SEA)
23:59
Washington Dulles (IAD) Alaska Airlines AS 348 Non-stop Boeing 737 (73J) 4:59 Effective 2026-05-13 through 2026-06-09 |
| Daily
23:30
Seattle-Tacoma (SEA)
07:36
Washington Dulles (IAD) Alaska Airlines AS 363 Non-stop Boeing 737 (73J) 5:06 Effective 2026-05-13 through 2026-06-09 The flight arrives 1 day after departure. |
| Mon,Thu,Fri,Sun
21:45
Seattle-Tacoma (SEA)
05:40
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 MAX 9 (7M9) 4:55 Effective 2026-02-12 through 2026-03-01 The flight arrives 1 day after departure. |
| Mon
21:45
Seattle-Tacoma (SEA)
05:40
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 (73J) 4:55 Operates only on 2026-03-02 The flight arrives 1 day after departure. |
| Mon,Thu,Fri,Sun
21:45
Seattle-Tacoma (SEA)
05:40
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 MAX 9 (7M9) 4:55 Effective 2026-03-05 through 2026-03-16 The flight arrives 1 day after departure. |
| Wed
21:55
Seattle-Tacoma (SEA)
05:55
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 (73J) 5:00 Operates only on 2026-03-18 The flight arrives 1 day after departure. |
| Daily
21:55
Seattle-Tacoma (SEA)
05:49
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 (73J) 4:54 Effective 2026-03-19 through 2026-05-12 The flight arrives 1 day after departure. |
| Mon,Tue,Thu-Sat
22:14
Seattle-Tacoma (SEA)
06:13
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Valid until 2026-01-03 The flight arrives 1 day after departure. |
| Mon,Sun
22:14
Seattle-Tacoma (SEA)
06:13
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 (73J) 4:59 Effective 2026-01-04 through 2026-01-05 The flight arrives 1 day after departure. |
| Daily
23:30
Seattle-Tacoma (SEA)
07:28
Washington Dulles (IAD) Alaska Airlines AS 367 Non-stop Boeing 737 (73J) 4:58 Effective from 2026-06-10 The flight arrives 1 day after departure. |
| Mon,Wed,Thu
09:34
Seattle-Tacoma (SEA)
17:43
Washington Dulles (IAD) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:09 Valid until 2026-01-05 |
| Tue,Fri-Sun
09:34
Seattle-Tacoma (SEA)
17:43
Washington Dulles (IAD) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:09 Valid until 2026-01-06 |
| Mon,Tue,Fri-Sun
15:30
Seattle-Tacoma (SEA)
23:27
Washington Dulles (IAD) Delta Air Lines DL 508 Non-stop Airbus A220-300 (223) 4:57 Valid until 2026-01-04 |
| Daily
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-01-05 through 2026-02-13 |
| Mon-Fri,Sun
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-15 through 2026-02-27 |
| Daily
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-28 through 2026-03-07 |
| Sat
15:25
Seattle-Tacoma (SEA)
23:15
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-14 through 2026-02-21 |
| Daily
15:55
Seattle-Tacoma (SEA)
23:48
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:53 Effective 2026-03-08 through 2026-03-14 |
| Daily
15:55
Seattle-Tacoma (SEA)
23:49
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:54 Effective 2026-03-15 through 2026-04-12 |
| Daily
15:55
Seattle-Tacoma (SEA)
23:55
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 5:00 Effective 2026-04-13 through 2026-10-05 |
| Daily
15:55
Seattle-Tacoma (SEA)
23:51
Washington Dulles (IAD) Delta Air Lines DL 541 Non-stop Airbus A220-300 (223) 4:56 Effective from 2026-10-06 |
| Daily
08:20
Seattle-Tacoma (SEA)
16:37
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 5:17 Effective 2026-03-19 through 2026-05-12 |
| Wed,Fri
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 9 (7M9) 4:56 Effective 2026-01-07 through 2026-01-30 |
| Thu,Sun
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 8 (7M8) 4:56 Effective 2026-01-08 through 2026-02-05 |
| Tue,Sat
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737-800 (73H) 4:56 Effective 2026-01-10 through 2026-02-07 |
| Mon
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 4:56 Effective 2026-01-12 through 2026-01-26 |
| Mon,Wed,Fri,Sun
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 9 (7M9) 4:56 Effective 2026-02-02 through 2026-02-11 |
| Tue
08:30
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 8 (7M8) 4:56 Operates only on 2026-02-10 |
| Daily
09:15
Seattle-Tacoma (SEA)
17:16
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 5:01 Effective from 2026-06-10 |
| Daily
09:18
Seattle-Tacoma (SEA)
17:15
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 4:57 Effective 2026-05-13 through 2026-06-09 |
| Mon,Thu,Fri,Sun
09:27
Seattle-Tacoma (SEA)
17:20
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 4:53 Effective 2026-02-12 through 2026-03-09 |
| Tue,Wed,Sat
09:27
Seattle-Tacoma (SEA)
17:20
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 9 (7M9) 4:53 Effective 2026-02-14 through 2026-03-07 |
| Tue,Fri-Sun
09:27
Seattle-Tacoma (SEA)
17:20
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 4:53 Effective 2026-03-10 through 2026-03-15 |
| Mon-Thu
09:27
Seattle-Tacoma (SEA)
17:20
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 MAX 9 (7M9) 4:53 Effective 2026-03-11 through 2026-03-17 |
| Wed
09:55
Seattle-Tacoma (SEA)
17:55
Washington Dulles (IAD) Alaska Airlines AS 737 Non-stop Boeing 737 (73J) 5:00 Operates only on 2026-03-18 |
| Daily
22:10
Seattle-Tacoma (SEA)
06:03
Washington Dulles (IAD) United Airlines UA 1355 Non-stop Boeing 737-900 (739) 4:53 Effective 2026-05-21 through 2026-10-24 The flight arrives 1 day after departure. |
| Fri
23:39
Seattle-Tacoma (SEA)
07:35
Washington Dulles (IAD) United Airlines UA 1483 Non-stop Boeing 737-800 (738) 4:56 Valid until 2026-01-02 The flight arrives 1 day after departure. |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) United Airlines UA 1523 Non-stop Boeing 737 MAX 9 (7M9) 5:11 Effective 2026-03-29 through 2026-04-29 |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) United Airlines UA 1523 Non-stop Boeing 737-900 (739) 5:11 Effective 2026-04-30 through 2026-05-20 |
| Daily
08:00
Seattle-Tacoma (SEA)
15:53
Washington Dulles (IAD) United Airlines UA 1523 Non-stop Boeing 737-900 (739) 4:53 Effective from 2026-05-21 |
| Daily
23:15
Seattle-Tacoma (SEA)
07:11
Washington Dulles (IAD) United Airlines UA 2019 Non-stop Boeing 737 MAX 9 (7M9) 4:56 Valid until 2026-01-05 The flight arrives 1 day after departure. |
| Daily
12:45
Seattle-Tacoma (SEA)
20:38
Washington Dulles (IAD) United Airlines UA 2131 Non-stop Boeing 737-900 (739) 4:53 Effective 2026-05-21 through 2026-08-17 |
| Daily
13:10
Seattle-Tacoma (SEA)
21:18
Washington Dulles (IAD) United Airlines UA 2131 Non-stop Boeing 737 MAX 8 (7M8) 5:08 Effective 2026-04-30 through 2026-05-20 |
| Thu
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) United Airlines UA 2217 Non-stop Boeing 737-800 (738) 5:06 Valid until 2026-01-01 |
| Mon-Wed,Fri,Sun
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) United Airlines UA 2217 Non-stop Boeing 737 MAX 8 (7M8) 5:06 Valid until 2026-01-05 |
| Daily
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) United Airlines UA 2217 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-01-06 through 2026-02-03 |
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Parallax here SEA-IAD
- 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 4:50 and 5:17.
