Southwest Airlines flights from Phoenix Sky Harbor (PHX) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE
Direct Flights:
Mon,Tue,Fri,Sun 22:45 Phoenix Sky Harbor (PHX) 4 00:55 Seattle-Tacoma (SEA) Southwest Airlines WN 2307 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Valid until 2026-01-04 The flight arrives 1 day after departure.
Sat 22:50 Phoenix Sky Harbor (PHX) 4 01:00 Seattle-Tacoma (SEA) Southwest Airlines WN 2307 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Valid until 2026-01-03 The flight arrives 1 day after departure.
Sat 08:10 Phoenix Sky Harbor (PHX) 4 11:15 Seattle-Tacoma (SEA) Southwest Airlines WN 2474 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-08-08 through 2026-09-26
Tue,Wed 09:00 Phoenix Sky Harbor (PHX) 4 12:05 Seattle-Tacoma (SEA) Southwest Airlines WN 2474 Non-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 09:05 Phoenix Sky Harbor (PHX) 4 12:15 Seattle-Tacoma (SEA) Southwest Airlines WN 2485 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-04-09 through 2026-06-01
Sat 11:20 Phoenix Sky Harbor (PHX) 4 14:20 Seattle-Tacoma (SEA) Southwest Airlines WN 2686 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-08-08 through 2026-09-26
Sat 08:10 Phoenix Sky Harbor (PHX) 4 11:15 Seattle-Tacoma (SEA) Southwest Airlines WN 2873 Non-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 07:05 Phoenix Sky Harbor (PHX) 4 10:10 Seattle-Tacoma (SEA) Southwest Airlines WN 2964 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-08-06 through 2026-09-28
Sat 14:00 Phoenix Sky Harbor (PHX) 4 17:05 Seattle-Tacoma (SEA) Southwest Airlines WN 3010 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-04-11 through 2026-05-30
Tue,Wed 14:40 Phoenix Sky Harbor (PHX) 4 17:45 Seattle-Tacoma (SEA) Southwest Airlines WN 3010 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-04-07 through 2026-06-03
Sun 21:55 Phoenix Sky Harbor (PHX) 4 00:50 Seattle-Tacoma (SEA) Southwest Airlines WN 3125 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-06-07 through 2026-08-02 The flight arrives 1 day after departure.
Sat 17:00 Phoenix Sky Harbor (PHX) 4 19:10 Seattle-Tacoma (SEA) Southwest Airlines WN 3215 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri 17:55 Phoenix Sky Harbor (PHX) 4 20:05 Seattle-Tacoma (SEA) Southwest Airlines WN 3215 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 17:55 Phoenix Sky Harbor (PHX) 4 20:05 Seattle-Tacoma (SEA) Southwest Airlines WN 3215 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-02-20 through 2026-03-01
Mon,Thu,Fri 14:05 Phoenix Sky Harbor (PHX) 4 17:05 Seattle-Tacoma (SEA) Southwest Airlines WN 3258 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-08-06 through 2026-09-28
Tue,Wed 14:35 Phoenix Sky Harbor (PHX) 4 17:35 Seattle-Tacoma (SEA) Southwest Airlines WN 3258 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-08-04 through 2026-09-30
Sun 16:30 Phoenix Sky Harbor (PHX) 4 19:30 Seattle-Tacoma (SEA) Southwest Airlines WN 3258 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-08-09 through 2026-09-27
Tue,Wed 21:40 Phoenix Sky Harbor (PHX) 4 00:40 Seattle-Tacoma (SEA) Southwest Airlines WN 3266 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-10 through 2026-04-01 The flight arrives 1 day after departure.
Sun 22:40 Phoenix Sky Harbor (PHX) 4 01:40 Seattle-Tacoma (SEA) Southwest Airlines WN 3266 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-08 through 2026-04-05 The flight arrives 1 day after departure.
Tue,Wed 18:15 Phoenix Sky Harbor (PHX) 4 21:15 Seattle-Tacoma (SEA) Southwest Airlines WN 3267 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-08-04 through 2026-09-30
Sun 21:55 Phoenix Sky Harbor (PHX) 4 00:50 Seattle-Tacoma (SEA) Southwest Airlines WN 3267 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-09 through 2026-09-27 The flight arrives 1 day after departure.
Sat 23:25 Phoenix Sky Harbor (PHX) 4 01:25 Seattle-Tacoma (SEA) Southwest Airlines WN 3277 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Operates only on 2026-03-07 The flight arrives 1 day after departure.
Tue,Wed 08:10 Phoenix Sky Harbor (PHX) 4 11:15 Seattle-Tacoma (SEA) Southwest Airlines WN 3330 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 08:35 Phoenix Sky Harbor (PHX) 4 11:40 Seattle-Tacoma (SEA) Southwest Airlines WN 3330 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-06-04 through 2026-08-03
Sun 09:40 Phoenix Sky Harbor (PHX) 4 12:45 Seattle-Tacoma (SEA) Southwest Airlines WN 3330 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 22:45 Phoenix Sky Harbor (PHX) 4 01:40 Seattle-Tacoma (SEA) Southwest Airlines WN 3429 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-06-04 through 2026-08-03 The flight arrives 1 day after departure.
Sun 14:40 Phoenix Sky Harbor (PHX) 4 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 3585 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-06-07 through 2026-08-02
Tue,Wed 15:20 Phoenix Sky Harbor (PHX) 4 18:20 Seattle-Tacoma (SEA) Southwest Airlines WN 3585 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 18:35 Phoenix Sky Harbor (PHX) 4 21:30 Seattle-Tacoma (SEA) Southwest Airlines WN 3585 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-06-04 through 2026-08-03
Sat 15:55 Phoenix Sky Harbor (PHX) 4 18:55 Seattle-Tacoma (SEA) Southwest Airlines WN 3600 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-06-06 through 2026-08-01
Sun 15:10 Phoenix Sky Harbor (PHX) 4 18:15 Seattle-Tacoma (SEA) Southwest Airlines WN 3890 Non-stop Boeing 737-800 (73H) 3:05 Operates only on 2026-05-24
Sun 17:40 Phoenix Sky Harbor (PHX) 4 20:45 Seattle-Tacoma (SEA) Southwest Airlines WN 3890 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-04-12 through 2026-05-17
Sun 17:40 Phoenix Sky Harbor (PHX) 4 20:45 Seattle-Tacoma (SEA) Southwest Airlines WN 3890 Non-stop Boeing 737-800 (73H) 3:05 Operates only on 2026-05-31
Mon,Thu,Fri 21:45 Phoenix Sky Harbor (PHX) 4 00:40 Seattle-Tacoma (SEA) Southwest Airlines WN 4065 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-08-06 through 2026-09-28 The flight arrives 1 day after departure.
Mon,Thu,Fri 22:40 Phoenix Sky Harbor (PHX) 4 01:40 Seattle-Tacoma (SEA) Southwest Airlines WN 4185 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-09 through 2026-04-06 The flight arrives 1 day after departure.
Thu,Fri 23:40 Phoenix Sky Harbor (PHX) 4 01:40 Seattle-Tacoma (SEA) Southwest Airlines WN 4185 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-05 through 2026-03-06 The flight arrives 1 day after departure.
Mon,Tue,Fri,Sun 18:00 Phoenix Sky Harbor (PHX) 4 20:15 Seattle-Tacoma (SEA) Southwest Airlines WN 4325 Non-stop Boeing 737-800 (73H) 3:15 Valid until 2026-01-04
Mon,Thu,Fri 08:45 Phoenix Sky Harbor (PHX) 4 11:00 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 08:45 Phoenix Sky Harbor (PHX) 4 11:00 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-02-20 through 2026-03-01
Sat 08:55 Phoenix Sky Harbor (PHX) 4 11:05 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-01-10 through 2026-02-07
Sat 08:55 Phoenix Sky Harbor (PHX) 4 11:05 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-02-14 through 2026-02-28
Thu,Fri,Sun 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-01-11 through 2026-01-16
Mon,Sun 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-01 through 2026-02-06
Mon,Sun 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-17 through 2026-02-23
Mon 11:15 Phoenix Sky Harbor (PHX) 4 13:30 Seattle-Tacoma (SEA) Southwest Airlines WN 4430 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Operates only on 2026-03-02
Sat 22:25 Phoenix Sky Harbor (PHX) 4 01:25 Seattle-Tacoma (SEA) Southwest Airlines WN 4444 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-14 through 2026-04-04 The flight arrives 1 day after departure.
Sun 09:00 Phoenix Sky Harbor (PHX) 4 12:05 Seattle-Tacoma (SEA) Southwest Airlines WN 4675 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-08-09 through 2026-09-27
Mon-Fri 09:45 Phoenix Sky Harbor (PHX) 4 12:05 Seattle-Tacoma (SEA) Southwest Airlines WN 4781 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-01-06 through 2026-01-14

1 2 3

A domestic route departing from the Phoenix Sky Harbor airport (PHX) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 1106 miles, or 1781 km.
The timezone of the departure airport is UTC-7 , 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 2:55 and 3:20.

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Southwest Airlines flights from Phoenix Sky Harbor (PHX) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN2307

22:45

Phoenix Sky Harbor (PHX) 4

00:55(+1)

Seattle-Tacoma (SEA)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN2307

22:50

Phoenix Sky Harbor (PHX) 4

01:00(+1)

Seattle-Tacoma (SEA)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN2474

08:10

Phoenix Sky Harbor (PHX) 4

11:15

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2474

09:00

Phoenix Sky Harbor (PHX) 4

12:05

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2485

09:05

Phoenix Sky Harbor (PHX) 4

12:15

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2686

11:20

Phoenix Sky Harbor (PHX) 4

14:20

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2873

08:10

Phoenix Sky Harbor (PHX) 4

11:15

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2964

07:05

Phoenix Sky Harbor (PHX) 4

10:10

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3010

14:00

Phoenix Sky Harbor (PHX) 4

17:05

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3010

14:40

Phoenix Sky Harbor (PHX) 4

17:45

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3125

21:55

Phoenix Sky Harbor (PHX) 4

00:50(+1)

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3215

17:00

Phoenix Sky Harbor (PHX) 4

19:10

Seattle-Tacoma (SEA)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3215

17:55

Phoenix Sky Harbor (PHX) 4

20:05

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3215

17:55

Phoenix Sky Harbor (PHX) 4

20:05

Seattle-Tacoma (SEA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3258

14:05

Phoenix Sky Harbor (PHX) 4

17:05

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3258

14:35

Phoenix Sky Harbor (PHX) 4

17:35

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3258

16:30

Phoenix Sky Harbor (PHX) 4

19:30

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3266

21:40

Phoenix Sky Harbor (PHX) 4

00:40(+1)

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3266

22:40

Phoenix Sky Harbor (PHX) 4

01:40(+1)

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3267

18:15

Phoenix Sky Harbor (PHX) 4

21:15

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3267

21:55

Phoenix Sky Harbor (PHX) 4

00:50(+1)

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3277

23:25

Phoenix Sky Harbor (PHX) 4

01:25(+1)

Seattle-Tacoma (SEA)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3330

08:10

Phoenix Sky Harbor (PHX) 4

11:15

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3330

08:35

Phoenix Sky Harbor (PHX) 4

11:40

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3330

09:40

Phoenix Sky Harbor (PHX) 4

12:45

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3429

22:45

Phoenix Sky Harbor (PHX) 4

01:40(+1)

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3585

14:40

Phoenix Sky Harbor (PHX) 4

17:40

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3585

15:20

Phoenix Sky Harbor (PHX) 4

18:20

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3585

18:35

Phoenix Sky Harbor (PHX) 4

21:30

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3600

15:55

Phoenix Sky Harbor (PHX) 4

18:55

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3890

15:10

Phoenix Sky Harbor (PHX) 4

18:15

Seattle-Tacoma (SEA)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3890

17:40

Phoenix Sky Harbor (PHX) 4

20:45

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3890

17:40

Phoenix Sky Harbor (PHX) 4

20:45

Seattle-Tacoma (SEA)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4065

21:45

Phoenix Sky Harbor (PHX) 4

00:40(+1)

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN4185

22:40

Phoenix Sky Harbor (PHX) 4

01:40(+1)

Seattle-Tacoma (SEA)

Effective 2026-03-09 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN4185

23:40

Phoenix Sky Harbor (PHX) 4

01:40(+1)

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN4325

18:00

Phoenix Sky Harbor (PHX) 4

20:15

Seattle-Tacoma (SEA)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4430

08:45

Phoenix Sky Harbor (PHX) 4

11:00

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4430

08:45

Phoenix Sky Harbor (PHX) 4

11:00

Seattle-Tacoma (SEA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4430

08:55

Phoenix Sky Harbor (PHX) 4

11:05

Seattle-Tacoma (SEA)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

08:55

Phoenix Sky Harbor (PHX) 4

11:05

Seattle-Tacoma (SEA)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4430

11:15

Phoenix Sky Harbor (PHX) 4

13:30

Seattle-Tacoma (SEA)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4444

22:25

Phoenix Sky Harbor (PHX) 4

01:25(+1)

Seattle-Tacoma (SEA)

Effective 2026-03-14 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN4675

09:00

Phoenix Sky Harbor (PHX) 4

12:05

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4781

09:45

Phoenix Sky Harbor (PHX) 4

12:05

Seattle-Tacoma (SEA)

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

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A domestic route departing from the Phoenix Sky Harbor airport (PHX) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 1106 miles, or 1781 km.
The timezone of the departure airport is UTC-7 , 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 2:55 and 3:20.

All PHX-SEA flights

All Southwest Airlines flights

Return (SEA-PHX) flights

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