All airlines flying from Seattle-Tacoma (SEA) to Washington Dulles (IAD).
| FLIGHT SCHEDULE |
|---|
| Direct Codeshare Flights: |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Lufthansa LH 7485 Non-stop Boeing 737 MAX 9 (7M9) 5:11 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Lufthansa LH 7485 Non-stop Boeing 737-900 (739) 5:11 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
15:53
Washington Dulles (IAD) Lufthansa LH 7485 Non-stop Boeing 737-900 (739) 4:53 Effective 2026-05-21 through 2026-10-24 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
12:45
Seattle-Tacoma (SEA)
20:38
Washington Dulles (IAD) Lufthansa LH 7487 Non-stop Boeing 737-900 (739) 4:53 Effective 2026-05-21 through 2026-08-17 Codeshare flight, operated by United Airlines.(UA 2131) |
| Daily
13:10
Seattle-Tacoma (SEA)
21:18
Washington Dulles (IAD) Lufthansa LH 7487 Non-stop Boeing 737 MAX 8 (7M8) 5:08 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 2131Z) |
| Thu
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-800 (738) 5:06 Valid until 2026-01-01 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon-Wed,Fri,Sun
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737 MAX 8 (7M8) 5:06 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 2217) |
| Tue-Fri
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737 MAX 8 (7M8) 5:02 Effective 2026-03-05 through 2026-03-27 Codeshare flight, operated by United Airlines.(UA 2474) |
| Sat,Sun
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-800 (738) 5:02 Effective 2026-03-07 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 2474) |
| Mon
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:02 Effective 2026-03-09 through 2026-03-23 Codeshare flight, operated by United Airlines.(UA 2474) |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737 MAX 9 (7M9) 5:11 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:11 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
15:53
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 4:53 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-01-06 through 2026-01-12 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon,Wed,Fri-Sun
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-01-14 through 2026-02-02 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon,Fri-Sun
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-02-06 through 2026-02-09 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon,Thu-Sun
08:17
Seattle-Tacoma (SEA)
16:19
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:02 Effective 2026-02-12 through 2026-03-02 Codeshare flight, operated by United Airlines.(UA 2217) |
| Tue,Wed
08:17
Seattle-Tacoma (SEA)
16:19
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:02 Effective 2026-03-03 through 2026-03-04 Codeshare flight, operated by United Airlines.(UA 2217) |
| Wed
08:20
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Austrian OS 7908 Non-stop Boeing 737-900 (739) 5:06 Operates only on 2026-02-04 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) China Eastern MU 8779 Non-stop Airbus A220-300 (223) 4:50 Operates only on 2026-01-05 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Mon,Tue,Fri-Sun
15:30
Seattle-Tacoma (SEA)
23:27
Washington Dulles (IAD) China Eastern MU 8779 Non-stop Airbus A220-300 (223) 4:57 Valid until 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 508) |
| Daily
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-01-06 through 2026-02-13 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Mon-Fri,Sun
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-15 through 2026-02-27 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Daily
15:20
Seattle-Tacoma (SEA)
23:10
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-28 through 2026-03-07 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Sat
15:25
Seattle-Tacoma (SEA)
23:15
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-02-14 through 2026-02-21 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Daily
15:55
Seattle-Tacoma (SEA)
23:48
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:53 Effective 2026-03-08 through 2026-03-14 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Daily
15:55
Seattle-Tacoma (SEA)
23:49
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:54 Effective 2026-03-15 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Daily
15:55
Seattle-Tacoma (SEA)
23:55
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 5:00 Effective 2026-04-13 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Daily
15:55
Seattle-Tacoma (SEA)
23:51
Washington Dulles (IAD) China Eastern MU 8804 Non-stop Airbus A220-300 (223) 4:56 Effective from 2026-10-06 Codeshare flight, operated by Delta Air Lines.(DL 541) |
| Thu
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-800 (738) 5:06 Valid until 2026-01-01 Codeshare flight, operated by United Airlines.(UA 2217) |
| Mon-Wed,Fri,Sun
08:00
Seattle-Tacoma (SEA)
16:06
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737 MAX 8 (7M8) 5:06 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 2217) |
| Tue-Fri
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737 MAX 8 (7M8) 5:02 Effective 2026-03-05 through 2026-03-27 Codeshare flight, operated by United Airlines.(UA 2474) |
| Sat,Sun
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-800 (738) 5:02 Effective 2026-03-07 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 2474) |
| Mon
08:00
Seattle-Tacoma (SEA)
16:02
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:02 Effective 2026-03-09 through 2026-03-23 Codeshare flight, operated by United Airlines.(UA 2474) |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737 MAX 9 (7M9) 5:11 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
16:11
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:11 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:00
Seattle-Tacoma (SEA)
15:53
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 4:53 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 1523) |
| Daily
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-01-06 through 2026-02-03 Codeshare flight, operated by United Airlines.(UA 2217) |
| Daily
08:10
Seattle-Tacoma (SEA)
16:16
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:06 Effective 2026-02-05 through 2026-02-11 Codeshare flight, operated by United Airlines.(UA 2217) |
| Daily
08:17
Seattle-Tacoma (SEA)
16:19
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:02 Effective 2026-02-12 through 2026-03-04 Codeshare flight, operated by United Airlines.(UA 2217) |
| Wed
08:20
Seattle-Tacoma (SEA)
16:26
Washington Dulles (IAD) Brussels Airlines SN 8850 Non-stop Boeing 737-900 (739) 5:06 Operates only on 2026-02-04 Codeshare flight, operated by United Airlines.(UA 2217) |
| Daily
09:34
Seattle-Tacoma (SEA)
17:43
Washington Dulles (IAD) American Airlines AA 9349 Non-stop Boeing 737 (737) 5:09 Valid until 2026-01-06 Codeshare flight, operated by Alaska Airlines.(AS 406) |
| Daily
15:35
Seattle-Tacoma (SEA)
23:52
Washington Dulles (IAD) American Airlines AA 9375 Non-stop Boeing 737 (737) 5:17 Effective 2026-04-22 through 2026-05-12 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Daily
15:59
Seattle-Tacoma (SEA)
23:59
Washington Dulles (IAD) American Airlines AA 9375 Non-stop Boeing 737 (737) 5:00 Effective from 2026-06-10 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Daily
16:00
Seattle-Tacoma (SEA)
23:59
Washington Dulles (IAD) American Airlines AA 9375 Non-stop Boeing 737 (737) 4:59 Effective 2026-05-13 through 2026-06-09 Codeshare flight, operated by Alaska Airlines.(AS 348) |
| Mon,Thu,Fri,Sun
21:45
Seattle-Tacoma (SEA)
05:40
Washington Dulles (IAD) American Airlines AA 9440 Non-stop Boeing 737 (737) 4:55 Effective 2026-02-12 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) American Airlines AA 9440 Non-stop Boeing 737 (737) 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) American Airlines AA 9440 Non-stop Boeing 737 (737) 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-Sun
22:14
Seattle-Tacoma (SEA)
06:13
Washington Dulles (IAD) American Airlines AA 9440 Non-stop Boeing 737 (737) 4:59 Valid until 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) American Airlines AA 9440 Non-stop Boeing 737 (737) 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. |
- 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.
