All airlines flying from Seattle-Tacoma (SEA) to Dulles, Washington (IAD).
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| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Mon-Sat
12:55
Seattle-Tacoma (SEA)
21:03
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-900 (739) 5:08 Valid until 2025-05-21 |
| Sun
12:55
Seattle-Tacoma (SEA)
21:03
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Airbus A319 (319) 5:08 Effective 2025-05-04 through 2025-05-18 |
| Tue-Fri
12:55
Seattle-Tacoma (SEA)
21:02
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-900 (739) 5:07 Effective 2025-05-22 through 2025-06-25 |
| Sat
12:55
Seattle-Tacoma (SEA)
21:02
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737 MAX 9 (7M9) 5:07 Effective 2025-05-24 through 2025-06-21 |
| Mon,Sun
12:55
Seattle-Tacoma (SEA)
21:02
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-700 (73G) 5:07 Effective 2025-05-25 through 2025-06-23 |
| Mon-Fri,Sun
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-900 (739) 4:57 Effective 2025-06-26 through 2025-07-31 |
| Sat
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-700 (73G) 4:57 Operates only on 2025-06-28 |
| Sat
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737 MAX 9 (7M9) 4:57 Operates only on 2025-07-05 |
| Sat
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-700 (73G) 4:57 Effective 2025-07-12 through 2025-08-16 |
| Mon-Fri
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737 MAX 9 (7M9) 4:57 Effective 2025-08-01 through 2025-08-18 |
| Sun
12:55
Seattle-Tacoma (SEA)
20:52
Dulles, Washington (IAD) United Airlines UA 2275 Non-stop Boeing 737-900 (739) 4:57 Effective 2025-08-03 through 2025-08-17 |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Dulles, Washington (IAD) United Airlines UA 2398 Non-stop Boeing 737-900 (739) 5:11 Effective 2025-05-22 through 2025-05-31 |
| Sun
08:00
Seattle-Tacoma (SEA)
16:11
Dulles, Washington (IAD) United Airlines UA 2398 Non-stop Boeing 737 MAX 8 (7M8) 5:11 Effective 2025-06-01 through 2025-06-22 |
| Mon-Sat
08:00
Seattle-Tacoma (SEA)
16:11
Dulles, Washington (IAD) United Airlines UA 2398 Non-stop Boeing 737-900 (739) 5:11 Effective 2025-06-02 through 2025-06-25 |
| Thu
08:10
Seattle-Tacoma (SEA)
16:18
Dulles, Washington (IAD) United Airlines UA 2398 Non-stop Airbus A320 (320) 5:08 Operates only on 2025-05-01 |
| Daily
08:10
Seattle-Tacoma (SEA)
16:18
Dulles, Washington (IAD) United Airlines UA 2398 Non-stop Boeing 737 MAX 9 (7M9) 5:08 Effective 2025-05-02 through 2025-05-21 |
| Mon-Fri,Sun
22:05
Seattle-Tacoma (SEA)
06:02
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737 MAX 9 (7M9) 4:57 Effective 2025-06-26 through 2025-07-03 The flight arrives 1 day after departure. |
| Sat
22:05
Seattle-Tacoma (SEA)
06:02
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737-900 (739) 4:57 Effective 2025-06-28 through 2025-08-16 The flight arrives 1 day after departure. |
| Mon-Fri,Sun
22:05
Seattle-Tacoma (SEA)
06:02
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737 MAX 9 (7M9) 4:57 Effective 2025-07-06 through 2025-08-18 The flight arrives 1 day after departure. |
| Mon-Fri,Sun
22:15
Seattle-Tacoma (SEA)
06:12
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737 MAX 9 (7M9) 4:57 Effective 2025-05-22 through 2025-06-24 The flight arrives 1 day after departure. |
| Sat
22:15
Seattle-Tacoma (SEA)
06:12
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737-900 (739) 4:57 Effective 2025-05-24 through 2025-06-21 The flight arrives 1 day after departure. |
| Wed
22:15
Seattle-Tacoma (SEA)
06:12
Dulles, Washington (IAD) United Airlines UA 2402 Non-stop Boeing 737-700 (73G) 4:57 Operates only on 2025-06-25 The flight arrives 1 day after departure. |
| Non-Direct Flights: |
| Mon-Fri,Sun
08:57
Seattle-Tacoma (SEA)
18:54
Dulles, Washington (IAD) United Airlines UA 347 1-stop Airbus A320 (320) 6:57 Effective 2025-08-01 through 2025-08-18 |
| Sat
08:57
Seattle-Tacoma (SEA)
18:54
Dulles, Washington (IAD) United Airlines UA 347 1-stop Airbus A319 (319) 6:57 Effective 2025-08-02 through 2025-08-16 |
| Sun
07:12
Seattle-Tacoma (SEA)
20:33
Dulles, Washington (IAD) United Airlines UA 1837 1-stop Boeing 737 MAX 8 (7M8) 10:21 Effective 2025-10-26 through 2025-12-14 |
| Direct Codeshare Flights: |
| Tue,Thu-Sun
09:55
Seattle-Tacoma (SEA)
17:55
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective from 2025-11-02 Codeshare flight, operated by Alaska Airlines.(AS 406) |
| Sat
12:36
Seattle-Tacoma (SEA)
20:43
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737-800 (73H) 5:07 Valid until 2025-05-03 Codeshare flight, operated by Alaska Airlines.(AS 414) |
| Sat
12:36
Seattle-Tacoma (SEA)
20:43
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:07 Operates only on 2025-05-10 Codeshare flight, operated by Alaska Airlines.(AS 414) |
| Tue,Thu-Sun
15:55
Seattle-Tacoma (SEA)
23:58
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:03 Effective 2025-08-21 through 2025-10-03 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu-Sat
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective 2025-06-12 through 2025-06-26 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-06-15 through 2025-06-22 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Thu,Fri,Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-06-27 through 2025-07-06 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Sat
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective 2025-06-28 through 2025-07-05 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-07-08 through 2025-07-10 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu-Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective 2025-07-11 through 2025-07-19 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu,Sat,Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-07-20 through 2025-07-27 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Fri
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective 2025-07-25 through 2025-08-01 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu,Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-07-31 through 2025-08-07 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Fri,Sat
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Effective 2025-08-02 through 2025-08-08 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue,Thu,Sat,Sun
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 5:00 Effective 2025-08-09 through 2025-08-19 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Fri
15:59
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 5:00 Operates only on 2025-08-15 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Tue
16:00
Seattle-Tacoma (SEA)
23:58
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 4:58 Valid until 2025-05-13 Codeshare flight, operated by Alaska Airlines.(AS 345) |
| Tue,Thu,Sat,Sun
16:00
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Effective 2025-05-15 through 2025-05-29 Codeshare flight, operated by Alaska Airlines.(AS 406) |
| Tue,Thu-Sun
16:00
Seattle-Tacoma (SEA)
23:59
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Effective 2025-05-30 through 2025-06-10 Codeshare flight, operated by Alaska Airlines.(AS 406) |
| Tue,Thu-Sun
16:00
Seattle-Tacoma (SEA)
23:49
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 4:49 Effective 2025-10-04 through 2025-11-01 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Thu,Sun
16:24
Seattle-Tacoma (SEA)
00:23
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Valid until 2025-05-01 Codeshare flight, operated by Alaska Airlines.(AS 348) The flight arrives 1 day after departure. |
| Sun
16:24
Seattle-Tacoma (SEA)
00:23
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 (73J) 4:59 Operates only on 2025-05-04 Codeshare flight, operated by Alaska Airlines.(AS 348) The flight arrives 1 day after departure. |
| Thu,Sun
16:24
Seattle-Tacoma (SEA)
00:23
Dulles, Washington (IAD) Singapore Airlines SQ 1234 Non-stop Boeing 737 MAX 9 (7M9) 4:59 Effective 2025-05-08 through 2025-05-11 Codeshare flight, operated by Alaska Airlines.(AS 348) The flight arrives 1 day after departure. |
| Mon,Wed,Thu,Sat
08:00
Seattle-Tacoma (SEA)
16:10
Dulles, Washington (IAD) Ethiopian Airlines ET 1369 Non-stop Boeing 737 MAX 8 (7M8) 5:10 Effective 2025-08-20 through 2025-09-24 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon,Wed,Thu,Sat
08:00
Seattle-Tacoma (SEA)
16:10
Dulles, Washington (IAD) Ethiopian Airlines ET 1369 Non-stop Boeing 737 MAX 9 (7M9) 5:10 Effective 2025-09-25 through 2025-10-25 Codeshare flight, operated by United Airlines.(UA 2217) |
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Parallax here SEA-IAD
- A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Dulles, Washington 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 4:48 and 5:11.
