Airlines with flights from Washington to Seattle

There are 7 airlines with scheduled flights between DCA and SEA. Both Alaska Airlines and Delta operates non-stop flights from Reagan National to Seattle Airport and the flight time is 5 hours and 58 minutes.

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Direct

$Alaska Airlines from {( $airportFrom->city_name }} to Seattle$

Non-stop

5h 58min

Direct

$Delta Air Lines from {( $airportFrom->city_name }} to Seattle$

Non-stop

5h 58min

Via Saint Louis

7h 10min

Via Detroit

7h 15min

Via Chicago

7h 15min

Via Minneapolis

7h 25min

Via Chicago

7h 25min

Via Chicago

7h 29min

Via Charlotte

7h 45min

Via Salt Lake City

7h 51min

Via Denver

7h 55min

Via Portland

7h 58min

Via Atlanta

8h 3min

Via New York

8h 15min

Via Dallas

8h 16min

Via Philadelphia

8h 24min

Via Denver

8h 40min

Via New York

8h 45min

Via Las Vegas

8h 55min

Via Denver

10h 1min

NEW

Via Dallas

8h 5min

NEW

Via Nashville

7h 35min

NEW

Via Sacramento

9h 35min

NEW

Via Columbus

11h 30min

NEW

Via Kansas City

7h 35min

NEW Starts 09/09

Via Boston

9h 48min

Schedules

Non-stop with Alaska Airlines

Total flight time: 5 hours and 58 minutes
One World Alliance
Seattle is a Alaska Airlines hub (Primary hub).

14 flights per week
Boeing 737-800 (winglets) Passenger/BBJ2

Boeing 737MAX 8 Passenger
Business and first class available

DCA

Direct

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

AS1

08:00

AS3

17:00

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The timetable & schedule information was updated at 2026-04-21

Non-stop with Delta Air Lines

Total flight time: 5 hours and 58 minutes
Sky Team Alliance
Seattle is a Delta Air Lines hub.

7 flights per week
Airbus A321neo
First class available

DCA

Direct

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

DL786

16:35

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The timetable & schedule information was updated at 2026-04-21

Via Saint Louis with Southwest Airlines

Total flight time: 7h 10m - 11h 50m.
Low-cost airline

2 flights per week

DCA

Via STL

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

WN225
WN2190

----

08:00

WN4853
WN3981

08:00

----

WN1678
WN159

----

12:30

----

SHOW RETURN SCHEDULE

CLOSE RETURN SCHEDULE

CHECK PRICES FOR DCA - SEA

The timetable & schedule information was updated at 2026-04-21

Via Detroit with Delta Air Lines

Total flight time: 7h 15m - 9h 22m.
Sky Team Alliance
Seattle is a Delta Air Lines hub.

119 flights per week
Airbus A321neo

DCA

Via DTW

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

DL2869
DL734

06:00

DL1558
DL728

09:39

DL2476
DL944

12:23

DL1454
DL565

17:29

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CHECK PRICES FOR DCA - SEA

The timetable & schedule information was updated at 2026-04-21

Via Chicago with Southwest Airlines

Total flight time: 7h 15m - 11h 25m.
Low-cost airline

55 flights per week

DCA

Via MDW

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

WN1409
WN2825

----

07:25

06:10

----

WN1442
WN2835

07:30

----

WN1409
WN359

----

07:55

WN1410
WN2826

----

12:05

----

11:40

WN1523
WN2826

----

12:25

----

WN1411
WN2827

----

15:40

----

WN1413
WN2827

----

18:40

----

18:10

WN1447
WN4144

19:05

----

SHOW RETURN SCHEDULE

CLOSE RETURN SCHEDULE

CHECK PRICES FOR DCA - SEA

The timetable & schedule information was updated at 2026-04-21

Via Minneapolis with Delta Air Lines

Total flight time: 7h 25m - 9h 30m.
Sky Team Alliance
Seattle is a Delta Air Lines hub.

135 flights per week
Airbus A321neo

DCA

Via MSP

SEA

Flight

Mon

Aug 3

Tue

Aug 4

Wed

Aug 5

Thu

Aug 6

Fri

Aug 7

Sat

Aug 8

Sun

Aug 9

DL1193
DL868

06:00