Alaska Airlines
flight
AS 378:
Seattle-Tacoma - Baltimore
Seattle-Tacoma - Baltimore
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-01-04
Mon
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Fri
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Duration: 5:06, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-02-12 through 2026-02-20
Mon
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Tue
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Wed
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Fri
Sat
Sun
Duration: 5:00, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-02-16 through 2026-02-28
Mon
Tue
Wed
Thu
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Fri
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Sat
Sun
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Duration: 5:00, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Effective 2026-02-22 through 2026-02-27
Mon
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Wed
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Sun
Duration: 5:00, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-03-01
Mon
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Fri
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Sun
Duration: 5:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS378
Effective 2026-03-02 through 2026-03-07
Mon
Tue
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Wed
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Thu
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Fri
Sat
Sun
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Duration: 5:00, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-03-03 through 2026-03-11
Mon
Tue
Wed
Thu
Fri
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Sat
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Sun
Duration: 5:00, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Effective 2026-03-12 through 2026-03-17
Mon
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Tue
Wed
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Thu
Fri
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Sat
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Sun
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Duration: 5:00, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-03-13 through 2026-03-16
Mon
Tue
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Wed
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Thu
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Fri
Sat
Sun
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Duration: 5:00, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-03-15
Mon
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Fri
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Sat
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Duration: 5:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS378
Valid until 2026-01-03
Mon
Tue
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Wed
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Thu
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Fri
Sat
Sun
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Duration: 5:06, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Valid until 2026-01-06
Mon
Tue
Wed
Thu
Fri
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Sat
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Sun
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Duration: 5:06, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-03-18
Mon
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Tue
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Thu
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Fri
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Sat
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Sun
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Duration: 5:00, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-03-19 through 2026-04-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:07, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-01-07 through 2026-01-14
Mon
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Tue
Wed
Thu
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Fri
Sat
Sun
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-
Duration: 5:03, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Effective 2026-01-08 through 2026-01-15
Mon
Tue
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Wed
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Thu
Fri
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Sat
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Sun
Duration: 5:03, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-01-16 through 2026-01-26
Mon
Tue
Wed
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-
Thu
Fri
Sat
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Sun
Duration: 5:03, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-01-17
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 5:03, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS378
Effective 2026-01-21 through 2026-01-31
Mon
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Tue
Wed
Thu
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Fri
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Sat
Sun
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Duration: 5:03, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Effective 2026-01-29 through 2026-02-05
Mon
Tue
Wed
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-
Thu
Fri
Sat
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Sun
Duration: 5:03, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-02-04 through 2026-02-11
Mon
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Tue
Wed
Thu
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Fri
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Sat
Sun
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Duration: 5:03, non-stop
Boeing 737 MAX 9 (7M9)
Boeing 737 MAX 9 (7M9)
Direct Flights:
Alaska Airlines AS378
Operates only on 2026-02-06
Mon
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Tue
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Wed
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Thu
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Fri
Sat
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Sun
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Duration: 5:03, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Alaska Airlines AS378
Effective 2026-02-08 through 2026-02-09
Mon
Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Duration: 5:03, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Direct Flights:
Alaska Airlines AS378
Effective from 2026-08-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:44, non-stop
Boeing 737 (73J)
Boeing 737 (73J)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here SEA-BWI
- AS 378 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at Baltimore airport (BWI).
- The flight distance is 2327 miles, or 3746 km.
- The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . 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 1:47 and 5:07.