Alaska Airlines flight AS 603: Phoenix Sky Harbor - Seattle-Tacoma

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FLIGHT SCHEDULE
Direct Flights:
Mon,Wed-Sun 10:56 Phoenix Sky Harbor (PHX) 3 14:14 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:18 Effective 2026-03-08 through 2026-03-15
Mon,Tue 10:56 Phoenix Sky Harbor (PHX) 3 14:14 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:18 Effective 2026-03-10 through 2026-03-17
Wed 11:40 Phoenix Sky Harbor (PHX) 3 14:40 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:00 Operates only on 2026-03-18
Daily 11:40 Phoenix Sky Harbor (PHX) 3 14:49 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:09 Effective 2026-03-19 through 2026-05-12
Daily 11:44 Phoenix Sky Harbor (PHX) 3 14:55 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:11 Effective 2026-05-13 through 2026-06-09
Daily 11:52 Phoenix Sky Harbor (PHX) 3 15:00 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737-700 (73G) 3:08 Effective from 2026-06-10
Mon,Thu-Sun 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:17 Effective 2026-02-12 through 2026-02-23
Tue,Wed 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-17 through 2026-02-18
Mon,Tue,Thu-Sun 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:17 Effective 2026-02-24 through 2026-03-02
Tue,Wed 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-25 through 2026-03-04
Thu 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Operates only on 2026-03-05
Fri,Sat 11:56 Phoenix Sky Harbor (PHX) 3 14:13 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:17 Effective 2026-03-06 through 2026-03-07
Mon,Tue,Fri-Sun 13:02 Phoenix Sky Harbor (PHX) 3 15:21 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737-800 (73H) 3:19 Valid until 2026-01-06
Thu 13:02 Phoenix Sky Harbor (PHX) 3 15:21 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Operates only on 2026-01-01
Mon-Thu 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Effective 2026-01-07 through 2026-01-13
Wed,Fri,Sat 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:16 Effective 2026-01-09 through 2026-01-21
Mon,Tue,Thu 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Effective 2026-01-15 through 2026-01-22
Mon,Tue,Fri 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Effective 2026-01-23 through 2026-01-27
Wed-Sat 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:16 Effective 2026-01-24 through 2026-02-04
Mon,Tue,Thu 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Effective 2026-02-02 through 2026-02-05
Mon,Fri,Sat 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 (73J) 3:16 Effective 2026-02-06 through 2026-02-09
Tue,Wed 13:16 Phoenix Sky Harbor (PHX) 3 15:32 Seattle-Tacoma (SEA)
AS 603 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Effective 2026-02-10 through 2026-02-11
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Parallax here PHX-SEA


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Alaska Airlines flight AS 603:
Phoenix Sky Harbor - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS603
10:56
Phoenix Sky Harbor (PHX) 3

14:14
Seattle-Tacoma (SEA)
Effective 2026-03-08 through 2026-03-15
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 3:18, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
10:56
Phoenix Sky Harbor (PHX) 3

14:14
Seattle-Tacoma (SEA)
Effective 2026-03-10 through 2026-03-17
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:18, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
11:40
Phoenix Sky Harbor (PHX) 3

14:40
Seattle-Tacoma (SEA)
Operates only on 2026-03-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
11:40
Phoenix Sky Harbor (PHX) 3

14:49
Seattle-Tacoma (SEA)
Effective 2026-03-19 through 2026-05-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:09, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
11:44
Phoenix Sky Harbor (PHX) 3

14:55
Seattle-Tacoma (SEA)
Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:11, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
11:52
Phoenix Sky Harbor (PHX) 3

15:00
Seattle-Tacoma (SEA)
Effective from 2026-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:08, non-stop
Boeing 737-700 (73G)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-02-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 3:17, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Effective 2026-02-17 through 2026-02-18
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Effective 2026-02-24 through 2026-03-02
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 3:17, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Effective 2026-02-25 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Operates only on 2026-03-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
11:56
Phoenix Sky Harbor (PHX) 3

14:13
Seattle-Tacoma (SEA)
Effective 2026-03-06 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 3:17, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
13:02
Phoenix Sky Harbor (PHX) 3

15:21
Seattle-Tacoma (SEA)
Valid until 2026-01-06
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 3:19, non-stop
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS603
13:02
Phoenix Sky Harbor (PHX) 3

15:21
Seattle-Tacoma (SEA)
Operates only on 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-01-07 through 2026-01-13
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-01-09 through 2026-01-21
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Duration: 3:16, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-01-15 through 2026-01-22
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-01-23 through 2026-01-27
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-01-24 through 2026-02-04
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Duration: 3:16, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-02-02 through 2026-02-05
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-02-06 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 3:16, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS603
13:16
Phoenix Sky Harbor (PHX) 3

15:32
Seattle-Tacoma (SEA)
Effective 2026-02-10 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)
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Parallax here PHX-SEA
  • AS 603 is a domestic flight 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 3:00 and 3:19.
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