All airlines flying from Dulles, Washington (IAD) to Seattle-Tacoma (SEA).
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| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Mon,Tue
10:00
Dulles, Washington (IAD)
12:40
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:40 Effective 2025-05-12 through 2025-05-13 |
| Wed
10:00
Dulles, Washington (IAD)
12:40
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 MAX 9 (7M9) 5:40 Operates only on 2025-05-14 |
| Daily
10:00
Dulles, Washington (IAD)
12:45
Seattle-Tacoma (SEA) Alaska Airlines AS 375 Non-stop Boeing 737 (73J) 5:45 Effective 2025-10-04 through 2025-11-20 |
| Daily
09:00
Dulles, Washington (IAD)
11:39
Seattle-Tacoma (SEA) Alaska Airlines AS 396 Non-stop Boeing 737 (73J) 5:39 Effective 2025-05-15 through 2025-06-11 |
| Tue,Thu,Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-06-12 through 2025-06-17 |
| Mon,Wed-Sat
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-13 through 2025-06-19 |
| Tue,Fri,Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-06-20 through 2025-06-24 |
| Mon,Wed-Sat
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-21 through 2025-06-27 |
| Sat,Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-06-28 through 2025-06-29 |
| Mon-Thu,Sat,Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-06-30 through 2025-07-10 |
| Tue-Sat
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-11 through 2025-07-18 |
| Mon,Sat,Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-07-13 through 2025-07-20 |
| Daily
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-07-21 through 2025-08-02 |
| Sun
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Effective 2025-08-03 through 2025-08-17 |
| Mon-Fri
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-08-04 through 2025-08-15 |
| Sat
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737-800 (73H) 5:47 Operates only on 2025-08-09 |
| Mon,Tue,Sat
18:13
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:47 Effective 2025-08-16 through 2025-08-19 |
| Daily
18:55
Dulles, Washington (IAD)
21:40
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:45 Effective from 2025-10-04 |
| Daily
19:17
Dulles, Washington (IAD)
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 406 Non-stop Boeing 737 (73J) 5:43 Effective 2025-08-20 through 2025-10-03 |
| Mon,Wed-Fri,Sun
19:13
Dulles, Washington (IAD)
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 408 Non-stop Boeing 737 MAX 9 (7M9) 5:47 Valid until 2025-05-12 |
| Tue
19:13
Dulles, Washington (IAD)
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 408 Non-stop Boeing 737 MAX 8 (7M8) 5:47 Valid until 2025-05-13 |
| Wed
19:13
Dulles, Washington (IAD)
22:00
Seattle-Tacoma (SEA) Alaska Airlines AS 408 Non-stop Boeing 737 (73J) 5:47 Operates only on 2025-05-14 |
| Wed
18:15
Dulles, Washington (IAD)
21:00
Seattle-Tacoma (SEA) Alaska Airlines AS 581 Non-stop Boeing 737 MAX 9 (7M9) 5:45 Operates only on 2025-06-11 |
| Daily
22:06
Dulles, Washington (IAD)
00:56
Seattle-Tacoma (SEA) United Airlines UA 716 Non-stop Boeing 737-900 (739) 5:50 Effective 2025-06-26 through 2025-07-03 The flight arrives 1 day after departure. |
| Daily
22:06
Dulles, Washington (IAD)
00:56
Seattle-Tacoma (SEA) United Airlines UA 716 Non-stop Boeing 737-900 (739) 5:50 Effective 2025-07-05 through 2025-08-18 The flight arrives 1 day after departure. |
| Mon-Fri,Sun
07:25
Dulles, Washington (IAD)
10:20
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 5:55 Valid until 2025-05-06 |
| Sat
07:25
Dulles, Washington (IAD)
10:22
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 5:57 Valid until 2025-05-03 |
| Daily
07:30
Dulles, Washington (IAD)
10:22
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 5:52 Effective 2025-07-07 through 2025-09-07 |
| Daily
07:30
Dulles, Washington (IAD)
10:35
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 6:05 Effective 2025-09-08 through 2025-12-19 |
| Daily
07:30
Dulles, Washington (IAD)
10:34
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 6:04 Effective from 2026-01-06 |
| Daily
07:40
Dulles, Washington (IAD)
10:28
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 5:48 Effective 2025-06-08 through 2025-07-06 |
| Daily
07:45
Dulles, Washington (IAD)
10:33
Seattle-Tacoma (SEA) Delta Air Lines DL 1015 Non-stop Airbus A220-300 (223) 5:48 Effective 2025-05-07 through 2025-06-07 |
| Daily
07:30
Dulles, Washington (IAD)
10:35
Seattle-Tacoma (SEA) Delta Air Lines DL 1084 Non-stop Airbus A220-300 (223) 6:05 Effective 2025-12-20 through 2026-01-05 |
| Daily
08:35
Dulles, Washington (IAD)
11:26
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-900 (739) 5:51 Effective 2025-10-26 through 2025-12-01 |
| Daily
08:35
Dulles, Washington (IAD)
11:26
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-900 (739) 5:51 Effective 2025-12-18 through 2026-01-05 |
| Tue-Fri
08:45
Dulles, Washington (IAD)
11:35
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-900 (739) 5:50 Effective 2025-05-22 through 2025-05-30 |
| Sat
08:45
Dulles, Washington (IAD)
11:35
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737 MAX 9 (7M9) 5:50 Effective 2025-05-24 through 2025-05-31 |
| Mon,Sun
08:45
Dulles, Washington (IAD)
11:35
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-700 (73G) 5:50 Effective 2025-05-25 through 2025-05-26 |
| Mon-Fri
08:53
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-900 (739) 5:50 Effective 2025-06-26 through 2025-07-31 |
| Sat
08:53
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-700 (73G) 5:50 Operates only on 2025-06-28 |
| Sun
08:53
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-900 (739) 5:50 Effective 2025-06-29 through 2025-08-17 |
| Sat
08:53
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737-700 (73G) 5:50 Effective 2025-07-12 through 2025-08-16 |
| Mon-Fri
08:53
Dulles, Washington (IAD)
11:43
Seattle-Tacoma (SEA) United Airlines UA 1366 Non-stop Boeing 737 MAX 9 (7M9) 5:50 Effective 2025-08-01 through 2025-08-18 |
| Mon-Fri,Sun
12:50
Dulles, Washington (IAD)
15:38
Seattle-Tacoma (SEA) United Airlines UA 1395 Non-stop Boeing 737 MAX 8 (7M8) 5:48 Effective 2025-05-22 through 2025-06-25 |
| Sat
13:01
Dulles, Washington (IAD)
15:49
Seattle-Tacoma (SEA) United Airlines UA 1395 Non-stop Boeing 737-900 (739) 5:48 Effective 2025-05-24 through 2025-05-31 |
| Sat
13:02
Dulles, Washington (IAD)
15:50
Seattle-Tacoma (SEA) United Airlines UA 1395 Non-stop Boeing 737-900 (739) 5:48 Effective 2025-06-07 through 2025-06-21 |
| Daily
13:05
Dulles, Washington (IAD)
15:53
Seattle-Tacoma (SEA) United Airlines UA 1395 Non-stop Boeing 737-900 (739) 5:48 Effective 2025-06-26 through 2025-08-18 |
| Daily
13:05
Dulles, Washington (IAD)
15:51
Seattle-Tacoma (SEA) United Airlines UA 1914 Non-stop Boeing 737 MAX 8 (7M8) 5:46 Effective 2025-08-19 through 2025-10-25 |
| Daily
17:26
Dulles, Washington (IAD)
20:18
Seattle-Tacoma (SEA) United Airlines UA 1998 Non-stop Boeing 737 MAX 9 (7M9) 5:52 Valid until 2025-05-21 |
| Mon-Sat
08:46
Dulles, Washington (IAD)
11:38
Seattle-Tacoma (SEA) United Airlines UA 2005 Non-stop Boeing 737-900 (739) 5:52 Valid until 2025-05-21 |
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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.
