Southwest Airlines flights from Seattle-Tacoma (SEA) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Sun 13:45 Seattle-Tacoma (SEA) 17:30 Denver (DEN) Southwest Airlines WN 4195 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2026-05-24
Mon,Thu,Fri 13:55 Seattle-Tacoma (SEA) 17:40 Denver (DEN) Southwest Airlines WN 4195 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-04-09 through 2026-06-01
Sun 14:20 Seattle-Tacoma (SEA) 18:00 Denver (DEN) Southwest Airlines WN 4195 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-04-12 through 2026-05-17
Sun 14:20 Seattle-Tacoma (SEA) 18:00 Denver (DEN) Southwest Airlines WN 4195 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2026-05-31
Sun 09:00 Seattle-Tacoma (SEA) 12:40 Denver (DEN) Southwest Airlines WN 4507 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-08-09 through 2026-09-27
Sat 10:20 Seattle-Tacoma (SEA) 14:10 Denver (DEN) Southwest Airlines WN 4507 Non-stop Boeing 737-700 (Scimitar Winglets) 2:50 Effective 2026-08-08 through 2026-09-26
Tue,Wed 11:10 Seattle-Tacoma (SEA) 14:50 Denver (DEN) Southwest Airlines WN 4507 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 13:50 Seattle-Tacoma (SEA) 17:40 Denver (DEN) Southwest Airlines WN 4507 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2026-08-06 through 2026-09-28
Tue,Wed 09:00 Seattle-Tacoma (SEA) 12:35 Denver (DEN) Southwest Airlines WN 4660 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 09:05 Seattle-Tacoma (SEA) 12:40 Denver (DEN) Southwest Airlines WN 4660 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-03-05 through 2026-04-06
Sun 10:30 Seattle-Tacoma (SEA) 14:10 Denver (DEN) Southwest Airlines WN 4660 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-03-08 through 2026-04-05
Sat 11:10 Seattle-Tacoma (SEA) 14:45 Denver (DEN) Southwest Airlines WN 4660 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-03-07 through 2026-04-04
Sun 05:20 Seattle-Tacoma (SEA) 08:55 Denver (DEN) Southwest Airlines WN 4697 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-08-09 through 2026-09-27
Tue,Wed 06:40 Seattle-Tacoma (SEA) 10:15 Denver (DEN) Southwest Airlines WN 4697 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-08-04 through 2026-09-30
Sat 06:50 Seattle-Tacoma (SEA) 10:25 Denver (DEN) Southwest Airlines WN 4697 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 15:45 Seattle-Tacoma (SEA) 19:30 Denver (DEN) Southwest Airlines WN 4697 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-08-06 through 2026-09-28
Sun 16:45 Seattle-Tacoma (SEA) 20:25 Denver (DEN) Southwest Airlines WN 4831 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-04-12 through 2026-05-17
Sun 16:45 Seattle-Tacoma (SEA) 20:25 Denver (DEN) Southwest Airlines WN 4831 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2026-05-31
Sun 20:10 Seattle-Tacoma (SEA) 23:55 Denver (DEN) Southwest Airlines WN 4837 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 19:20 Seattle-Tacoma (SEA) 22:55 Denver (DEN) Southwest Airlines WN 4845 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-06-04 through 2026-08-03
Sat 19:35 Seattle-Tacoma (SEA) 23:10 Denver (DEN) Southwest Airlines WN 4845 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-06-06 through 2026-08-01
Sun 20:05 Seattle-Tacoma (SEA) 23:40 Denver (DEN) Southwest Airlines WN 4845 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-06-07 through 2026-08-02
Tue,Wed 07:35 Seattle-Tacoma (SEA) 11:15 Denver (DEN) Southwest Airlines WN 4920 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-06-09 through 2026-07-29
Non-Direct Flights:
Mon,Thu,Fri 07:50 Seattle-Tacoma (SEA) 14:05 Denver (DEN) Southwest Airlines WN 1416 1-stop Boeing 737 MAX 8 (7M8) 5:15 Effective 2026-03-05 through 2026-04-06
Sun 07:00 Seattle-Tacoma (SEA) 13:00 Denver (DEN) Southwest Airlines WN 2650 1-stop Boeing 737-700 (Scimitar Winglets) 5:00 Operates only on 2026-05-24
Sat 06:40 Seattle-Tacoma (SEA) 12:50 Denver (DEN) Southwest Airlines WN 3936 1-stop Boeing 737-800 (73H) 5:10 Effective 2026-04-11 through 2026-05-30

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A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Denver airport (DEN).
The flight distance is 1022 miles, or 1644 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-7 . 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 2:30 and 2:55.

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Southwest Airlines flights from Seattle-Tacoma (SEA) to Denver (DEN).

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4195

13:45

Seattle-Tacoma (SEA)

17:30

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4195

13:55

Seattle-Tacoma (SEA)

17:40

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4195

14:20

Seattle-Tacoma (SEA)

18:00

Denver (DEN)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4195

14:20

Seattle-Tacoma (SEA)

18:00

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4507

09:00

Seattle-Tacoma (SEA)

12:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4507

10:20

Seattle-Tacoma (SEA)

14:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4507

11:10

Seattle-Tacoma (SEA)

14:50

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4507

13:50

Seattle-Tacoma (SEA)

17:40

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4660

09:00

Seattle-Tacoma (SEA)

12:35

Denver (DEN)

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4660

09:05

Seattle-Tacoma (SEA)

12:40

Denver (DEN)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4660

10:30

Seattle-Tacoma (SEA)

14:10

Denver (DEN)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4660

11:10

Seattle-Tacoma (SEA)

14:45

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4697

05:20

Seattle-Tacoma (SEA)

08:55

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4697

06:40

Seattle-Tacoma (SEA)

10:15

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4697

06:50

Seattle-Tacoma (SEA)

10:25

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4697

15:45

Seattle-Tacoma (SEA)

19:30

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4831

16:45

Seattle-Tacoma (SEA)

20:25

Denver (DEN)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4831

16:45

Seattle-Tacoma (SEA)

20:25

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4837

20:10

Seattle-Tacoma (SEA)

23:55

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4845

19:20

Seattle-Tacoma (SEA)

22:55

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4845

19:35

Seattle-Tacoma (SEA)

23:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4845

20:05

Seattle-Tacoma (SEA)

23:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4920

07:35

Seattle-Tacoma (SEA)

11:15

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN1416

07:50

Seattle-Tacoma (SEA)

14:05

Denver (DEN)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:15, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN2650

07:00

Seattle-Tacoma (SEA)

13:00

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:00, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3936

06:40

Seattle-Tacoma (SEA)

12:50

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:10, 1-stop
Boeing 737-800 (73H)

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A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Denver airport (DEN).
The flight distance is 1022 miles, or 1644 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-7 . 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 2:30 and 2:55.

All SEA-DEN flights

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