Southwest Airlines flights from Baltimore (BWI) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE
Direct Flights:
Sat 08:05 Baltimore (BWI) 10:45 Seattle-Tacoma (SEA) Southwest Airlines WN 840 Non-stop Boeing 737-800 (73H) 5:40 Effective 2026-08-08 through 2026-09-26
Tue,Wed 10:20 Baltimore (BWI) 13:00 Seattle-Tacoma (SEA) Southwest Airlines WN 1087 Non-stop Boeing 737-800 (73H) 5:40 Effective 2026-08-04 through 2026-09-30
Sun 12:00 Baltimore (BWI) 14:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1087 Non-stop Boeing 737-800 (73H) 5:40 Effective 2026-08-09 through 2026-09-27
Sun 16:20 Baltimore (BWI) 19:05 Seattle-Tacoma (SEA) Southwest Airlines WN 1100 Non-stop Boeing 737-800 (73H) 5:45 Effective 2026-06-07 through 2026-08-02
Sat 09:25 Baltimore (BWI) 12:10 Seattle-Tacoma (SEA) Southwest Airlines WN 1162 Non-stop Boeing 737-800 (73H) 5:45 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 12:20 Baltimore (BWI) 15:00 Seattle-Tacoma (SEA) Southwest Airlines WN 1694 Non-stop Boeing 737-700 (Scimitar Winglets) 5:40 Effective 2026-08-06 through 2026-09-28
Tue,Wed 10:35 Baltimore (BWI) 13:20 Seattle-Tacoma (SEA) Southwest Airlines WN 3190 Non-stop Boeing 737-800 (73H) 5:45 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 15:45 Baltimore (BWI) 18:30 Seattle-Tacoma (SEA) Southwest Airlines WN 3647 Non-stop Boeing 737-700 (Scimitar Winglets) 5:45 Effective 2026-06-04 through 2026-08-03
Non-Direct Flights:
Tue,Wed 12:40 Baltimore (BWI) 18:25 Seattle-Tacoma (SEA) Southwest Airlines WN 3368 1-stop Boeing 737-800 (73H) 8:45 Effective 2026-04-07 through 2026-06-03
Sat 17:10 Baltimore (BWI) 23:00 Seattle-Tacoma (SEA) Southwest Airlines WN 3645 1-stop Boeing 737 MAX 8 (7M8) 8:50 Effective 2026-04-11 through 2026-05-30
Sun 12:55 Baltimore (BWI) 18:15 Seattle-Tacoma (SEA) Southwest Airlines WN 4982 1-stop Boeing 737-700 (Scimitar Winglets) 8:20 Effective 2026-06-07 through 2026-08-02
Tue,Wed 06:20 Baltimore (BWI) 13:35 Seattle-Tacoma (SEA) Southwest Airlines WN 1049 2-stop Boeing 737-800 (73H) 10:15 Effective 2026-06-09 through 2026-07-29

A domestic route departing from the Baltimore airport (BWI) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 2327 miles, or 3746 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 5:40 and 5:45.

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN840

08:05

Baltimore (BWI)

10:45

Seattle-Tacoma (SEA)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1087

10:20

Baltimore (BWI)

13:00

Seattle-Tacoma (SEA)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1087

12:00

Baltimore (BWI)

14:40

Seattle-Tacoma (SEA)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1100

16:20

Baltimore (BWI)

19:05

Seattle-Tacoma (SEA)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1162

09:25

Baltimore (BWI)

12:10

Seattle-Tacoma (SEA)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1694

12:20

Baltimore (BWI)

15:00

Seattle-Tacoma (SEA)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3190

10:35

Baltimore (BWI)

13:20

Seattle-Tacoma (SEA)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3647

15:45

Baltimore (BWI)

18:30

Seattle-Tacoma (SEA)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3368

12:40

Baltimore (BWI)

18:25

Seattle-Tacoma (SEA)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 8:45, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3645

17:10

Baltimore (BWI)

23:00

Seattle-Tacoma (SEA)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 8:50, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4982

12:55

Baltimore (BWI)

18:15

Seattle-Tacoma (SEA)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 8:20, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1049

06:20

Baltimore (BWI)

13:35

Seattle-Tacoma (SEA)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 10:15, 2-stop
Boeing 737-800 (73H)

A domestic route departing from the Baltimore airport (BWI) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 2327 miles, or 3746 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 5:40 and 5:45.

All BWI-SEA flights

All Southwest Airlines flights

Return (SEA-BWI) flights

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