Alaska Airlines flight AS 138: Missoula - Seattle-Tacoma

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FLIGHT SCHEDULE
Direct Flights:
Wed 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 1:49 Effective 2026-01-07 through 2026-01-14
Mon,Tue,Thu-Sun 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:49 Effective 2026-01-08 through 2026-01-15
Fri,Sat 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737-800 (73H) 1:49 Effective 2026-01-16 through 2026-01-17
Mon-Thu,Sat,Sun 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:49 Effective 2026-01-18 through 2026-01-25
Mon,Fri 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 1:49 Effective 2026-01-23 through 2026-01-30
Mon-Thu,Sat,Sun 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:49 Effective 2026-01-27 through 2026-02-02
Mon,Tue 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737-800 (73H) 1:49 Effective 2026-02-03 through 2026-02-09
Tue-Fri,Sun 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:49 Effective 2026-02-04 through 2026-02-10
Sat 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 1:49 Operates only on 2026-02-07
Wed 06:23 Missoula (MSO) 07:12 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 8 (7M8) 1:49 Operates only on 2026-02-11
Mon,Wed-Sat 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:46 Effective 2026-02-12 through 2026-02-19
Tue,Fri,Sun 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737-800 (73H) 1:46 Effective 2026-02-15 through 2026-02-20
Wed-Sat 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:46 Effective 2026-02-21 through 2026-03-05
Sun 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 8 (7M8) 1:46 Operates only on 2026-02-22
Mon 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 1:46 Effective 2026-02-23 through 2026-03-02
Tue,Sun 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737-800 (73H) 1:46 Effective 2026-02-24 through 2026-03-03
Tue,Fri-Sun 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737-800 (73H) 1:46 Effective 2026-03-06 through 2026-03-10
Mon,Wed,Thu,Sat 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 1:46 Effective 2026-03-09 through 2026-03-16
Fri,Sun 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 1:46 Effective 2026-03-13 through 2026-03-15
Tue 06:23 Missoula (MSO) 07:09 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 8 (7M8) 1:46 Operates only on 2026-03-17
Mon,Fri,Sat 06:40 Detroit (DTW) E 08:49 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 (73J) 5:09 Valid until 2026-01-05
Tue-Thu,Sun 06:40 Detroit (DTW) E 08:49 Seattle-Tacoma (SEA)
AS 138 Non-stop Boeing 737 MAX 9 (7M9) 5:09 Valid until 2026-01-06
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Alaska Airlines flight AS 138:
Missoula - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Alaska Airlines AS138
Effective 2026-01-07 through 2026-01-14
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

Alaska Airlines AS138
Effective 2026-01-08 through 2026-01-15
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:49, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Effective 2026-01-16 through 2026-01-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 1:49, non-stop
Boeing 737-800 (73H)

Direct Flights:

Alaska Airlines AS138
Effective 2026-01-18 through 2026-01-25
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 1:49, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Effective 2026-01-23 through 2026-01-30
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:49, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

Alaska Airlines AS138
Effective 2026-01-27 through 2026-02-02
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 1:49, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-03 through 2026-02-09
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Boeing 737-800 (73H)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-04 through 2026-02-10
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:49, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Operates only on 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:49, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

Alaska Airlines AS138
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-12 through 2026-02-19
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:46, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-15 through 2026-02-20
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:46, non-stop
Boeing 737-800 (73H)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-21 through 2026-03-05
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:46, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Operates only on 2026-02-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:46, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-23 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:46, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

Alaska Airlines AS138
Effective 2026-02-24 through 2026-03-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:46, non-stop
Boeing 737-800 (73H)

Direct Flights:

Alaska Airlines AS138
Effective 2026-03-06 through 2026-03-10
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 1:46, non-stop
Boeing 737-800 (73H)

Direct Flights:

Alaska Airlines AS138
Effective 2026-03-09 through 2026-03-16
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Duration: 1:46, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Effective 2026-03-13 through 2026-03-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:46, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

Alaska Airlines AS138
Operates only on 2026-03-17
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:46, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Alaska Airlines AS138
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 5:09, non-stop
Boeing 737 (73J)

Direct Flights:

Alaska Airlines AS138
Valid until 2026-01-06
Mon
-
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 5:09, non-stop
Boeing 737 MAX 9 (7M9)
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  • AS 138 is a domestic flight departing from the Missoula airport (MSO) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 387 miles, or 623 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 1:46 and 5:09.