Alaska Airlines flight AS 637: Phoenix Sky Harbor - Seattle-Tacoma

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed 09:45 Phoenix Sky Harbor (PHX) 3 12:45 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:00 Operates only on 2026-03-18
Daily 09:45 Phoenix Sky Harbor (PHX) 3 12:54 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:09 Effective 2026-03-19 through 2026-05-12
Mon,Tue,Thu-Sun 09:51 Phoenix Sky Harbor (PHX) 3 13:12 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:21 Effective 2026-03-08 through 2026-03-16
Wed 09:51 Phoenix Sky Harbor (PHX) 3 13:12 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737-800 (73H) 3:21 Operates only on 2026-03-11
Tue 09:51 Phoenix Sky Harbor (PHX) 3 13:12 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:21 Operates only on 2026-03-17
Daily 10:46 Phoenix Sky Harbor (PHX) 3 13:54 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:08 Effective from 2026-06-10
Daily 10:51 Phoenix Sky Harbor (PHX) 3 13:09 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:18 Effective 2026-02-12 through 2026-03-05
Fri 10:51 Phoenix Sky Harbor (PHX) 3 13:09 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:18 Operates only on 2026-03-06
Sat 10:51 Phoenix Sky Harbor (PHX) 3 13:09 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:18 Operates only on 2026-03-07
Wed,Thu,Sat 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:19 Effective 2026-01-07 through 2026-01-14
Mon,Tue,Fri,Sun 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Effective 2026-01-09 through 2026-01-13
Wed-Fri 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737-800 (73H) 3:19 Effective 2026-01-15 through 2026-01-22
Sat,Sun 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:19 Effective 2026-01-17 through 2026-01-18
Mon,Tue,Fri,Sat 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Effective 2026-01-19 through 2026-01-26
Tue,Wed,Sat,Sun 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:19 Effective 2026-01-25 through 2026-02-08
Thu,Fri 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737-800 (73H) 3:19 Effective 2026-01-29 through 2026-02-05
Mon,Fri 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Effective 2026-02-02 through 2026-02-09
Tue 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Operates only on 2026-02-10
Wed 11:00 Phoenix Sky Harbor (PHX) 3 13:19 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:19 Operates only on 2026-02-11
Mon,Thu,Fri 11:24 Phoenix Sky Harbor (PHX) 3 13:49 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:25 Valid until 2026-01-05
Sat,Sun 11:24 Phoenix Sky Harbor (PHX) 3 13:49 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737-800 (73H) 3:25 Effective 2026-01-03 through 2026-01-04
Tue 11:24 Phoenix Sky Harbor (PHX) 3 13:49 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:25 Operates only on 2026-01-06
Daily 12:04 San Diego (SAN) 2 15:11 Seattle-Tacoma (SEA)
AS 637 Non-stop Boeing 737 (73J) 3:07 Effective 2026-05-13 through 2026-06-09
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Parallax here PHX-SEA


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Alaska Airlines flight AS 637:
Phoenix Sky Harbor - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS637
09:45
Phoenix Sky Harbor (PHX) 3

12:45
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 AS637
09:45
Phoenix Sky Harbor (PHX) 3

12:54
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 AS637
09:51
Phoenix Sky Harbor (PHX) 3

13:12
Seattle-Tacoma (SEA)
Effective 2026-03-08 through 2026-03-16
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 3:21, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
09:51
Phoenix Sky Harbor (PHX) 3

13:12
Seattle-Tacoma (SEA)
Operates only on 2026-03-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:21, non-stop
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS637
09:51
Phoenix Sky Harbor (PHX) 3

13:12
Seattle-Tacoma (SEA)
Operates only on 2026-03-17
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:21, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
10:46
Phoenix Sky Harbor (PHX) 3

13:54
Seattle-Tacoma (SEA)
Effective from 2026-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:08, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
10:51
Phoenix Sky Harbor (PHX) 3

13:09
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-03-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:18, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
10:51
Phoenix Sky Harbor (PHX) 3

13:09
Seattle-Tacoma (SEA)
Operates only on 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:18, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
10:51
Phoenix Sky Harbor (PHX) 3

13:09
Seattle-Tacoma (SEA)
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:18, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-07 through 2026-01-14
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Duration: 3:19, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-09 through 2026-01-13
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-15 through 2026-01-22
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-17 through 2026-01-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 3:19, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-19 through 2026-01-26
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-25 through 2026-02-08
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
Duration: 3:19, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-01-29 through 2026-02-05
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Effective 2026-02-02 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Operates only on 2026-02-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS637
11:00
Phoenix Sky Harbor (PHX) 3

13:19
Seattle-Tacoma (SEA)
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:19, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:24
Phoenix Sky Harbor (PHX) 3

13:49
Seattle-Tacoma (SEA)
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
11:24
Phoenix Sky Harbor (PHX) 3

13:49
Seattle-Tacoma (SEA)
Effective 2026-01-03 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS637
11:24
Phoenix Sky Harbor (PHX) 3

13:49
Seattle-Tacoma (SEA)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS637
12:04
San Diego (SAN) 2

15:11
Seattle-Tacoma (SEA)
Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:07, non-stop
Boeing 737 (73J)
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Parallax here PHX-SEA
  • AS 637 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 3:25.
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