United Airlines flights from Seattle-Tacoma (SEA) to Dulles, Washington (IAD).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 08:00 Seattle-Tacoma (SEA) 16:06 Dulles, Washington (IAD)
United Airlines UA 1360 Non-stop Boeing 737-900 (739) 5:06 Effective 2025-01-07 through 2025-02-12
Daily 08:00 Seattle-Tacoma (SEA) 15:53 Dulles, Washington (IAD)
United Airlines UA 1360 Non-stop Boeing 737-900 (739) 4:53 Effective from 2025-02-13
Daily 08:05 Seattle-Tacoma (SEA) 16:10 Dulles, Washington (IAD)
United Airlines UA 1360 Non-stop Boeing 737 MAX 9 (7M9) 5:05 Effective 2024-09-26 through 2024-10-26
Daily 08:05 Seattle-Tacoma (SEA) 16:03 Dulles, Washington (IAD)
United Airlines UA 1360 Non-stop Boeing 737-900 (739) 4:58 Effective 2024-12-03 through 2024-12-18
Daily 08:10 Seattle-Tacoma (SEA) 16:15 Dulles, Washington (IAD)
United Airlines UA 1360 Non-stop Boeing 737 MAX 9 (7M9) 5:05 Valid until 2024-09-25
Daily 23:30 Seattle-Tacoma (SEA) 07:22 Dulles, Washington (IAD)
United Airlines UA 1810 Non-stop Boeing 737-800 (738) 4:52 Effective 2024-12-19 through 2025-01-06
The flight arrives 1 day after departure.
Mon-Thu,Sun 22:50 Seattle-Tacoma (SEA) 06:55 Dulles, Washington (IAD)
United Airlines UA 2019 Non-stop Boeing 737 MAX 9 (7M9) 5:05 Valid until 2024-09-05
The flight arrives 1 day after departure.
Sat 22:50 Seattle-Tacoma (SEA) 06:55 Dulles, Washington (IAD)
United Airlines UA 2019 Non-stop Boeing 737-800 (738) 5:05 Valid until 2024-09-07
The flight arrives 1 day after departure.
Mon-Fri,Sun 22:50 Seattle-Tacoma (SEA) 06:55 Dulles, Washington (IAD)
United Airlines UA 2019 Non-stop Boeing 737 MAX 9 (7M9) 5:05 Effective 2024-09-06 through 2024-09-25
The flight arrives 1 day after departure.
Sat 22:50 Seattle-Tacoma (SEA) 06:55 Dulles, Washington (IAD)
United Airlines UA 2019 Non-stop Boeing 737 MAX 8 (7M8) 5:05 Effective 2024-09-14 through 2024-09-21
The flight arrives 1 day after departure.
Mon-Fri 12:37 Seattle-Tacoma (SEA) 20:40 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-800 (738) 5:03 Effective 2024-12-19 through 2025-01-06
Sat 12:37 Seattle-Tacoma (SEA) 20:40 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Airbus A319 (319) 5:03 Effective 2024-12-21 through 2025-01-04
Sun 12:37 Seattle-Tacoma (SEA) 20:40 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Airbus A320 (320) 5:03 Effective 2024-12-22 through 2025-01-05
Mon,Wed,Fri-Sun 12:47 Seattle-Tacoma (SEA) 20:45 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-700 (73G) 4:58 Effective 2024-10-27 through 2024-12-02
Tue,Thu 12:47 Seattle-Tacoma (SEA) 20:45 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-800 (738) 4:58 Effective 2024-10-29 through 2024-11-26
Wed,Sun 12:50 Seattle-Tacoma (SEA) 20:54 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Airbus A320 (320) 5:04 Valid until 2024-09-25
Mon,Tue,Thu-Sat 12:50 Seattle-Tacoma (SEA) 20:54 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737 MAX 9 (7M9) 5:04 Valid until 2024-09-24
Mon,Tue,Thu 12:50 Seattle-Tacoma (SEA) 20:55 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-800 (738) 5:05 Effective 2024-09-26 through 2024-10-24
Fri 12:50 Seattle-Tacoma (SEA) 20:55 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-900 (739) 5:05 Operates only on 2024-09-27
Fri-Sun 12:50 Seattle-Tacoma (SEA) 20:55 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Airbus A319 (319) 5:05 Effective 2024-09-28 through 2024-10-26
Wed 12:50 Seattle-Tacoma (SEA) 20:55 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-700 (73G) 5:05 Effective 2024-10-02 through 2024-10-23
Daily 12:50 Seattle-Tacoma (SEA) 20:38 Dulles, Washington (IAD)
United Airlines UA 2275 Non-stop Boeing 737-900 (739) 4:48 Effective from 2025-02-13
Daily 08:05 Seattle-Tacoma (SEA) 16:03 Dulles, Washington (IAD)
United Airlines UA 2855 Non-stop Boeing 737-900 (739) 4:58 Effective 2024-10-27 through 2024-12-02
Non-Direct Flights:
Daily 07:03 Seattle-Tacoma (SEA) 20:40 Dulles, Washington (IAD)
United Airlines UA 1788 1-stop Boeing 737-900 (739) 10:37 Effective 2025-01-07 through 2025-02-12
Daily 07:03 Seattle-Tacoma (SEA) 20:37 Dulles, Washington (IAD)
United Airlines UA 1788 1-stop Boeing 737-900 (739) 10:34 Effective from 2025-02-13
Mon,Tue,Thu,Fri,Sun 05:00 Seattle-Tacoma (SEA) 15:39 Dulles, Washington (IAD)
United Airlines UA 2087 1-stop Boeing 737 MAX 9 (7M9) 7:39 Effective 2024-12-19 through 2024-12-30
Sat 05:00 Seattle-Tacoma (SEA) 15:39 Dulles, Washington (IAD)
United Airlines UA 2087 1-stop Airbus A319 (319) 7:39 Effective 2024-12-21 through 2025-01-04
Wed 05:00 Seattle-Tacoma (SEA) 15:39 Dulles, Washington (IAD)
United Airlines UA 2087 1-stop Boeing 737 MAX 8 (7M8) 7:39 Operates only on 2024-12-25
Tue 05:00 Seattle-Tacoma (SEA) 15:39 Dulles, Washington (IAD)
United Airlines UA 2087 1-stop Boeing 737-900 (739) 7:39 Operates only on 2024-12-31
Mon,Wed-Fri,Sun 05:00 Seattle-Tacoma (SEA) 15:39 Dulles, Washington (IAD)
United Airlines UA 2087 1-stop Boeing 737 MAX 9 (7M9) 7:39 Effective 2025-01-01 through 2025-01-06




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United Airlines flights from Seattle-Tacoma (SEA) to Dulles, Washington (IAD).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1360
08:00
Seattle-Tacoma (SEA)

16:06
Dulles, Washington (IAD)
Effective 2025-01-07 through 2025-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:06, non-stop
Boeing 737-900 (739)
United Airlines UA1360
08:00
Seattle-Tacoma (SEA)

15:53
Dulles, Washington (IAD)
Effective from 2025-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:53, non-stop
Boeing 737-900 (739)
United Airlines UA1360
08:05
Seattle-Tacoma (SEA)

16:10
Dulles, Washington (IAD)
Effective 2024-09-26 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:05, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1360
08:05
Seattle-Tacoma (SEA)

16:03
Dulles, Washington (IAD)
Effective 2024-12-03 through 2024-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:58, non-stop
Boeing 737-900 (739)
United Airlines UA1360
08:10
Seattle-Tacoma (SEA)

16:15
Dulles, Washington (IAD)
Valid until 2024-09-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:05, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1810
23:30
Seattle-Tacoma (SEA)

07:22(+1)
Dulles, Washington (IAD)
Effective 2024-12-19 through 2025-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:52, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
United Airlines UA2019
22:50
Seattle-Tacoma (SEA)

06:55(+1)
Dulles, Washington (IAD)
Valid until 2024-09-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 5:05, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA2019
22:50
Seattle-Tacoma (SEA)

06:55(+1)
Dulles, Washington (IAD)
Valid until 2024-09-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:05, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
United Airlines UA2019
22:50
Seattle-Tacoma (SEA)

06:55(+1)
Dulles, Washington (IAD)
Effective 2024-09-06 through 2024-09-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 5:05, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA2019
22:50
Seattle-Tacoma (SEA)

06:55(+1)
Dulles, Washington (IAD)
Effective 2024-09-14 through 2024-09-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:05, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
United Airlines UA2275
12:37
Seattle-Tacoma (SEA)

20:40
Dulles, Washington (IAD)
Effective 2024-12-19 through 2025-01-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 5:03, non-stop
Boeing 737-800 (738)
United Airlines UA2275
12:37
Seattle-Tacoma (SEA)

20:40
Dulles, Washington (IAD)
Effective 2024-12-21 through 2025-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:03, non-stop
Airbus A319 (319)
United Airlines UA2275
12:37
Seattle-Tacoma (SEA)

20:40
Dulles, Washington (IAD)
Effective 2024-12-22 through 2025-01-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:03, non-stop
Airbus A320 (320)
United Airlines UA2275
12:47
Seattle-Tacoma (SEA)

20:45
Dulles, Washington (IAD)
Effective 2024-10-27 through 2024-12-02
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
Duration: 4:58, non-stop
Boeing 737-700 (73G)
United Airlines UA2275
12:47
Seattle-Tacoma (SEA)

20:45
Dulles, Washington (IAD)
Effective 2024-10-29 through 2024-11-26
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:58, non-stop
Boeing 737-800 (738)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:54
Dulles, Washington (IAD)
Valid until 2024-09-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:04, non-stop
Airbus A320 (320)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:54
Dulles, Washington (IAD)
Valid until 2024-09-24
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 5:04, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:55
Dulles, Washington (IAD)
Effective 2024-09-26 through 2024-10-24
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 5:05, non-stop
Boeing 737-800 (738)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:55
Dulles, Washington (IAD)
Operates only on 2024-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 5:05, non-stop
Boeing 737-900 (739)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:55
Dulles, Washington (IAD)
Effective 2024-09-28 through 2024-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 5:05, non-stop
Airbus A319 (319)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:55
Dulles, Washington (IAD)
Effective 2024-10-02 through 2024-10-23
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:05, non-stop
Boeing 737-700 (73G)
United Airlines UA2275
12:50
Seattle-Tacoma (SEA)

20:38
Dulles, Washington (IAD)
Effective from 2025-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:48, non-stop
Boeing 737-900 (739)
United Airlines UA2855
08:05
Seattle-Tacoma (SEA)

16:03
Dulles, Washington (IAD)
Effective 2024-10-27 through 2024-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:58, non-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA1788
07:03
Seattle-Tacoma (SEA)

20:40
Dulles, Washington (IAD)
Effective 2025-01-07 through 2025-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:37, 1-stop
Boeing 737-900 (739)
United Airlines UA1788
07:03
Seattle-Tacoma (SEA)

20:37
Dulles, Washington (IAD)
Effective from 2025-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:34, 1-stop
Boeing 737-900 (739)
United Airlines UA2087
05:00
Seattle-Tacoma (SEA)

15:39
Dulles, Washington (IAD)
Effective 2024-12-19 through 2024-12-30
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 7:39, 1-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2087
05:00
Seattle-Tacoma (SEA)

15:39
Dulles, Washington (IAD)
Effective 2024-12-21 through 2025-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:39, 1-stop
Airbus A319 (319)
United Airlines UA2087
05:00
Seattle-Tacoma (SEA)

15:39
Dulles, Washington (IAD)
Operates only on 2024-12-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:39, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA2087
05:00
Seattle-Tacoma (SEA)

15:39
Dulles, Washington (IAD)
Operates only on 2024-12-31
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:39, 1-stop
Boeing 737-900 (739)
United Airlines UA2087
05:00
Seattle-Tacoma (SEA)

15:39
Dulles, Washington (IAD)
Effective 2025-01-01 through 2025-01-06
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 7:39, 1-stop
Boeing 737 MAX 9 (7M9)
  • 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 5:06.
All SEA-IAD flights
All United Airlines flights
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