Delta Air Lines flights from Ronald Reagan Washington (DCA) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon 16:45 Ronald Reagan Washington (DCA) 2 19:37 Seattle-Tacoma (SEA)
Delta Air Lines DL 689 Non-stop Boeing 757-200 (75W) 5:52 Operates only on 2026-03-09
Mon 16:45 Ronald Reagan Washington (DCA) 2 19:39 Seattle-Tacoma (SEA)
Delta Air Lines DL 689 Non-stop Boeing 757-200 (75W) 5:54 Effective 2026-03-16 through 2026-04-06
Daily 16:44 Ronald Reagan Washington (DCA) 2 19:43 Seattle-Tacoma (SEA)
Delta Air Lines DL 779 Non-stop Boeing 757-200 (75W) 5:59 Effective 2026-02-12 through 2026-03-07
Daily 16:40 Ronald Reagan Washington (DCA) 2 19:46 Seattle-Tacoma (SEA)
Delta Air Lines DL 786 Non-stop Airbus A321neo (32Q) 6:06 Effective 2026-04-13 through 2026-10-05
Daily 16:40 Ronald Reagan Washington (DCA) 2 19:45 Seattle-Tacoma (SEA)
Delta Air Lines DL 786 Non-stop Airbus A321neo (32Q) 6:05 Effective from 2026-10-06
Tue-Sun 16:45 Ronald Reagan Washington (DCA) 2 19:37 Seattle-Tacoma (SEA)
Delta Air Lines DL 786 Non-stop Boeing 757-200 (75W) 5:52 Effective 2026-03-08 through 2026-03-14
Tue-Sun 16:45 Ronald Reagan Washington (DCA) 2 19:39 Seattle-Tacoma (SEA)
Delta Air Lines DL 786 Non-stop Boeing 757-200 (75W) 5:54 Effective 2026-03-15 through 2026-04-12
Daily 16:59 Ronald Reagan Washington (DCA) 2 19:54 Seattle-Tacoma (SEA)
Delta Air Lines DL 932 Non-stop Boeing 757-200 (75W) 5:55 Valid until 2026-01-03
Sun 17:00 Ronald Reagan Washington (DCA) 2 19:55 Seattle-Tacoma (SEA)
Delta Air Lines DL 932 Non-stop Boeing 757-200 (75W) 5:55 Operates only on 2026-01-04
Daily 16:44 Ronald Reagan Washington (DCA) 2 19:43 Seattle-Tacoma (SEA)
Delta Air Lines DL 944 Non-stop Boeing 757-200 (75W) 5:59 Effective 2026-01-05 through 2026-02-11




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Delta Air Lines flights from Ronald Reagan Washington (DCA) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL689
16:45
Ronald Reagan Washington (DCA) 2

19:37
Seattle-Tacoma (SEA)
Operates only on 2026-03-09
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:52, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL689
16:45
Ronald Reagan Washington (DCA) 2

19:39
Seattle-Tacoma (SEA)
Effective 2026-03-16 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:54, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL779
16:44
Ronald Reagan Washington (DCA) 2

19:43
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:59, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL786
16:40
Ronald Reagan Washington (DCA) 2

19:46
Seattle-Tacoma (SEA)
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:06, non-stop
Airbus A321neo (32Q)
Direct Flights:
Delta Air Lines DL786
16:40
Ronald Reagan Washington (DCA) 2

19:45
Seattle-Tacoma (SEA)
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:05, non-stop
Airbus A321neo (32Q)
Direct Flights:
Delta Air Lines DL786
16:45
Ronald Reagan Washington (DCA) 2

19:37
Seattle-Tacoma (SEA)
Effective 2026-03-08 through 2026-03-14
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:52, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL786
16:45
Ronald Reagan Washington (DCA) 2

19:39
Seattle-Tacoma (SEA)
Effective 2026-03-15 through 2026-04-12
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:54, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL932
16:59
Ronald Reagan Washington (DCA) 2

19:54
Seattle-Tacoma (SEA)
Valid until 2026-01-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:55, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL932
17:00
Ronald Reagan Washington (DCA) 2

19:55
Seattle-Tacoma (SEA)
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:55, non-stop
Boeing 757-200 (75W)
Direct Flights:
Delta Air Lines DL944
16:44
Ronald Reagan Washington (DCA) 2

19:43
Seattle-Tacoma (SEA)
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:59, non-stop
Boeing 757-200 (75W)
  • A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 2321 miles, or 3736 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 5:52 and 6:06.
All DCA-SEA flights
All Delta Air Lines flights
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