All airlines flying from Ronald Reagan Washington (DCA) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Tue 17:00 Ronald Reagan Washington (DCA) 2 20:00 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:00 Valid until 2026-01-05 Codeshare flight, operated by Alaska Airlines.(AS 3)
Tue,Sat,Sun 17:00 Ronald Reagan Washington (DCA) 2 20:00 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:00 Effective 2026-01-03 through 2026-01-06 Codeshare flight, operated by Alaska Airlines.(AS 3)
Wed-Sun 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:11 Effective 2026-02-12 through 2026-02-26 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon,Tue 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:11 Effective 2026-02-16 through 2026-02-24 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon,Tue,Fri 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:11 Effective 2026-02-27 through 2026-03-06 Codeshare flight, operated by Alaska Airlines.(AS 3)
Wed,Thu,Sat,Sun 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:11 Effective 2026-02-28 through 2026-03-07 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon-Wed,Sun 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:11 Effective 2026-03-08 through 2026-03-17 Codeshare flight, operated by Alaska Airlines.(AS 3)
Thu-Sat 17:00 Ronald Reagan Washington (DCA) 2 20:11 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:11 Effective 2026-03-12 through 2026-03-14 Codeshare flight, operated by Alaska Airlines.(AS 3)
Daily 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:06 Effective 2026-01-07 through 2026-01-15 Codeshare flight, operated by Alaska Airlines.(AS 3)
Fri 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:06 Effective 2026-01-16 through 2026-01-23 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon-Thu,Sat,Sun 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:06 Effective 2026-01-17 through 2026-01-29 Codeshare flight, operated by Alaska Airlines.(AS 3)
Wed,Fri,Sat 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:06 Effective 2026-01-30 through 2026-02-04 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon,Tue,Thu,Fri,Sun 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 MAX 8 (7M8) 6:06 Effective 2026-02-01 through 2026-02-06 Codeshare flight, operated by Alaska Airlines.(AS 3)
Mon-Wed,Sat,Sun 17:01 Ronald Reagan Washington (DCA) 2 20:07 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:06 Effective 2026-02-07 through 2026-02-11 Codeshare flight, operated by Alaska Airlines.(AS 3)
Wed 17:30 Ronald Reagan Washington (DCA) 2 20:25 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 5:55 Operates only on 2026-03-18 Codeshare flight, operated by Alaska Airlines.(AS 3)
Daily 17:30 Ronald Reagan Washington (DCA) 2 20:32 Seattle-Tacoma (SEA) Hawaiian Airlines HA 6703 Non-stop Boeing 737 (737) 6:02 Effective 2026-03-19 through 2026-04-21 Codeshare flight, operated by Alaska Airlines.(AS 3)

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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 5:39 and 6:11.

Return (SEA-DCA) flights

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All airlines flying from Ronald Reagan Washington (DCA) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:00

Seattle-Tacoma (SEA)

Valid until 2026-01-05

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:00, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:00

Seattle-Tacoma (SEA)

Effective 2026-01-03 through 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-26

Mon
-

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-02-16 through 2026-02-24

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-02-27 through 2026-03-06

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-02-28 through 2026-03-07

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-03-08 through 2026-03-17

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:00

Ronald Reagan Washington (DCA) 2

20:11

Seattle-Tacoma (SEA)

Effective 2026-03-12 through 2026-03-14

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:11, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-01-07 through 2026-01-15

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-01-16 through 2026-01-23

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-01-17 through 2026-01-29

Mon

Tue

Wed

Thu

Fri
-

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-01-30 through 2026-02-04

Mon
-

Tue
-

Wed

Thu
-

Fri

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-02-01 through 2026-02-06

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:01

Ronald Reagan Washington (DCA) 2

20:07

Seattle-Tacoma (SEA)

Effective 2026-02-07 through 2026-02-11

Mon

Tue

Wed

Thu
-

Fri
-

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:06, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:30

Ronald Reagan Washington (DCA) 2

20:25

Seattle-Tacoma (SEA)

Operates only on 2026-03-18

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 5:55, non-stop
Boeing 737 (737)

Direct Codeshare Flights:

Hawaiian Airlines HA6703

17:30

Ronald Reagan Washington (DCA) 2

20:32

Seattle-Tacoma (SEA)

Effective 2026-03-19 through 2026-04-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Alaska Airlines. (AS 3)

Duration: 6:02, non-stop
Boeing 737 (737)

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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 5:39 and 6:11.

Return (SEA-DCA) flights

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