All airlines flying from Dulles, Washington (IAD) to Seattle-Tacoma (SEA).
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| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Mon-Fri,Sun
06:30
Dulles, Washington (IAD)
09:10
Seattle-Tacoma (SEA) Alaska Airlines AS 308 Non-stop Boeing 737 MAX 9 (7M9) 5:40 Effective 2025-05-15 through 2025-06-11 |
| Sat
07:00
Dulles, Washington (IAD)
09:40
Seattle-Tacoma (SEA) Alaska Airlines AS 308 Non-stop Boeing 737 (73J) 5:40 Operates only on 2025-05-17 |
| Sat
07:00
Dulles, Washington (IAD)
09:40
Seattle-Tacoma (SEA) Alaska Airlines AS 308 Non-stop Boeing 737 MAX 9 (7M9) 5:40 Effective 2025-05-24 through 2025-06-07 |
| Daily
17:35
Dulles, Washington (IAD)
20:10
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737-900 (739) 5:35 Effective from 2025-10-26 |
| Mon-Fri,Sun
17:48
Dulles, Washington (IAD)
20:41
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737 MAX 9 (7M9) 5:53 Effective 2025-05-22 through 2025-06-24 |
| Sat
17:48
Dulles, Washington (IAD)
20:41
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737-900 (739) 5:53 Effective 2025-05-24 through 2025-06-21 |
| Wed
17:48
Dulles, Washington (IAD)
20:41
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737-700 (73G) 5:53 Operates only on 2025-06-25 |
| Mon-Fri,Sun
17:55
Dulles, Washington (IAD)
20:48
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737 MAX 9 (7M9) 5:53 Effective 2025-06-26 through 2025-07-03 |
| Fri,Sat
17:55
Dulles, Washington (IAD)
20:48
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737-900 (739) 5:53 Effective 2025-06-28 through 2025-07-05 |
| Mon-Fri,Sun
17:55
Dulles, Washington (IAD)
20:48
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737 MAX 9 (7M9) 5:53 Effective 2025-07-06 through 2025-08-18 |
| Sat
17:55
Dulles, Washington (IAD)
20:48
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737-900 (739) 5:53 Effective 2025-07-12 through 2025-08-16 |
| Daily
17:55
Dulles, Washington (IAD)
20:42
Seattle-Tacoma (SEA) United Airlines UA 326 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-08-19 through 2025-10-25 |
| Mon-Fri,Sun
06:30
Dulles, Washington (IAD)
09:13
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:43 Valid until 2025-05-02 |
| Sat
06:30
Dulles, Washington (IAD)
09:13
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737-800 (73H) 5:43 Valid until 2025-05-03 |
| Sat,Sun
06:30
Dulles, Washington (IAD)
09:13
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737-800 (73H) 5:43 Effective 2025-05-04 through 2025-05-10 |
| Mon,Sun
06:30
Dulles, Washington (IAD)
09:13
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:43 Effective 2025-05-05 through 2025-05-11 |
| Mon-Fri
06:30
Dulles, Washington (IAD)
09:13
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:43 Effective 2025-05-06 through 2025-05-14 |
| Tue-Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-12 through 2025-06-18 |
| Mon,Thu
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-06-16 through 2025-06-23 |
| Wed,Fri-Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-20 through 2025-06-27 |
| Mon,Tue,Thu,Sat
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-06-24 through 2025-06-30 |
| Tue-Thu,Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-29 through 2025-07-08 |
| Mon,Wed-Sat
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-07-04 through 2025-07-11 |
| Daily
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-12 through 2025-07-20 |
| Mon-Wed,Fri,Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-07-21 through 2025-07-28 |
| Tue-Thu,Sat
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-24 through 2025-08-02 |
| Mon-Wed,Fri
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-08-01 through 2025-08-08 |
| Thu,Sat,Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-08-03 through 2025-08-09 |
| Mon-Wed,Fri,Sun
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-08-10 through 2025-08-18 |
| Tue,Thu,Sat
06:30
Dulles, Washington (IAD)
09:17
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:47 Effective 2025-08-14 through 2025-08-19 |
| Daily
07:00
Dulles, Washington (IAD)
09:41
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:41 Effective 2025-08-20 through 2025-10-03 |
| Daily
07:00
Dulles, Washington (IAD)
09:45
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:45 Effective 2025-10-04 through 2026-01-06 |
| Daily
07:00
Dulles, Washington (IAD)
09:45
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:45 Effective from 2026-02-12 |
| Tue-Thu
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:45 Effective 2025-05-15 through 2025-05-21 |
| Mon,Thu-Sun
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:45 Effective 2025-05-16 through 2025-05-23 |
| Wed,Sat
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:45 Effective 2025-05-24 through 2025-05-28 |
| Mon,Tue,Thu-Sun
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:45 Effective 2025-05-25 through 2025-06-02 |
| Tue,Wed,Sat
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 MAX 9 (7M9) 5:45 Effective 2025-06-03 through 2025-06-10 |
| Mon,Thu,Fri,Sun
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 351 Non-stop Boeing 737 (73J) 5:45 Effective 2025-06-05 through 2025-06-09 |
| Mon-Fri,Sun
09:00
Dulles, Washington (IAD)
11:47
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-12 through 2025-06-29 |
| Sat
09:00
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:43 Effective 2025-06-14 through 2025-06-28 |
| Mon
09:00
Dulles, Washington (IAD)
11:47
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Operates only on 2025-06-30 |
| Mon-Fri,Sun
09:00
Dulles, Washington (IAD)
11:47
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-01 through 2025-07-20 |
| Sat
09:00
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:43 Operates only on 2025-07-05 |
| Sat
09:00
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:43 Effective 2025-07-12 through 2025-08-16 |
| Mon
09:00
Dulles, Washington (IAD)
11:47
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Operates only on 2025-07-21 |
| Mon-Fri,Sun
09:00
Dulles, Washington (IAD)
11:47
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-22 through 2025-08-19 |
| Daily
09:00
Dulles, Washington (IAD)
11:44
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:44 Effective 2025-08-20 through 2025-10-03 |
| Tue,Thu,Fri
10:00
Dulles, Washington (IAD)
12:40
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:40 Valid until 2025-05-09 |
| Mon,Wed,Sat,Sun
10:00
Dulles, Washington (IAD)
12:40
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:40 Valid until 2025-05-11 |
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Parallax here IAD-SEA
- 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 5:35 and 6:05.
