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

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue-Fri,Sun 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 2026-01-18 through 2026-01-23
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 2026-01-26 through 2026-02-04
Tue,Wed,Sun 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 2026-02-08 through 2026-02-11
Tue,Wed 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 2026-02-18 through 2026-03-04
Sat 16:15 Phoenix Sky Harbor (PHX) 4 19:15 Seattle-Tacoma (SEA)
Southwest Airlines WN 5067 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-08-08 through 2026-09-26
Non-Direct Flights:
Mon 06:05 Phoenix Sky Harbor (PHX) 4 10:40 Seattle-Tacoma (SEA)
Southwest Airlines WN 519 1-stop Boeing 737-700 (Scimitar Winglets) 5:35 Operates only on 2026-01-05
Tue,Wed 08:50 Phoenix Sky Harbor (PHX) 4 13:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1049 1-stop Boeing 737-800 (73H) 4:45 Effective 2026-06-09 through 2026-07-29
Sun 19:05 Phoenix Sky Harbor (PHX) 4 00:05 Seattle-Tacoma (SEA)
Southwest Airlines WN 2080 1-stop Boeing 737-700 (Scimitar Winglets) 5:00 Effective 2026-03-08 through 2026-04-05
The flight arrives 1 day after departure.
Tue,Wed 19:05 Phoenix Sky Harbor (PHX) 4 23:30 Seattle-Tacoma (SEA)
Southwest Airlines WN 2250 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 09:25 Phoenix Sky Harbor (PHX) 4 14:10 Seattle-Tacoma (SEA)
Southwest Airlines WN 2764 1-stop Boeing 737 MAX 8 (7M8) 4:45 Effective 2026-04-09 through 2026-06-01
Sat 17:45 Phoenix Sky Harbor (PHX) 4 22:40 Seattle-Tacoma (SEA)
Southwest Airlines WN 4236 1-stop Boeing 737-800 (73H) 4:55 Effective 2026-03-14 through 2026-04-04
Sat 18:45 Phoenix Sky Harbor (PHX) 4 22:40 Seattle-Tacoma (SEA)
Southwest Airlines WN 4236 1-stop Boeing 737-800 (73H) 4:55 Operates only on 2026-03-07
Tue,Wed 15:20 Phoenix Sky Harbor (PHX) 4 21:40 Seattle-Tacoma (SEA)
Southwest Airlines WN 1232 2-stop Boeing 737-700 (Scimitar Winglets) 6:20 Effective 2026-03-10 through 2026-04-01
Mon-Fri 13:20 Phoenix Sky Harbor (PHX) 4 18:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1740 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 13:20 Phoenix Sky Harbor (PHX) 4 18:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1740 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-01-18 through 2026-01-23
Mon-Fri 13:20 Phoenix Sky Harbor (PHX) 4 18:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1740 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 13:20 Phoenix Sky Harbor (PHX) 4 18:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1740 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-02-08 through 2026-02-11
Tue,Wed 13:20 Phoenix Sky Harbor (PHX) 4 18:35 Seattle-Tacoma (SEA)
Southwest Airlines WN 1740 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-02-18 through 2026-03-04
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Southwest Airlines flights from Phoenix Sky Harbor (PHX) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:35, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:45, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.

Non-Direct Flights:

Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:45, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Effective 2026-03-14 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:55, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:55, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:20, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 6:15, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 6:15, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 6:15, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:15, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:15, 2-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.