Alaska Airlines flights from Saint Louis (STL) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 19:50 Saint Louis (STL) 1 22:34 Seattle-Tacoma (SEA)
Alaska Airlines AS 349 Non-stop Boeing 737 (73J) 4:44 Effective 2024-05-16 through 2024-09-30
Daily 14:18 Saint Louis (STL) 1 17:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:42 Effective 2024-01-08 through 2024-02-14
Daily 14:20 Saint Louis (STL) 1 16:56 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:36 Valid until 2024-01-07
Mon,Thu,Fri,Sun 14:21 Saint Louis (STL) 1 16:59 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:38 Effective 2024-02-15 through 2024-03-11
Daily 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:32 Effective 2024-03-14 through 2024-03-29
Sat 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737-900 (739) 4:32 Operates only on 2024-03-30
Mon-Fri,Sun 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:32 Effective 2024-03-31 through 2024-04-11
Fri,Sat 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 MAX 9 (7M9) 4:32 Effective 2024-04-06 through 2024-04-12
Mon,Sat 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737-900 (739) 4:32 Effective 2024-04-13 through 2024-04-15
Sun 14:26 Saint Louis (STL) 1 16:58 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:32 Operates only on 2024-04-14
Daily 14:35 Saint Louis (STL) 1 17:00 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:25 Effective 2024-04-16 through 2024-05-15
Daily 17:30 Saint Louis (STL) 1 20:14 Seattle-Tacoma (SEA)
Alaska Airlines AS 388 Non-stop Boeing 737 (73J) 4:44 Effective from 2024-05-16
Mon,Tue,Thu-Sun 07:00 Saint Louis (STL) 1 09:40 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:40 Valid until 2024-01-06
Wed 07:00 Saint Louis (STL) 1 09:40 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 MAX 9 (7M9) 4:40 Operates only on 2024-01-03
Sun 07:00 Saint Louis (STL) 1 09:40 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-900 (739) 4:40 Operates only on 2024-01-07
Mon-Fri,Sun 07:00 Saint Louis (STL) 1 09:42 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:42 Effective 2024-02-16 through 2024-02-23
Sat 07:00 Saint Louis (STL) 1 09:42 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-900 (739) 4:42 Operates only on 2024-02-17
Daily 07:00 Saint Louis (STL) 1 09:42 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:42 Effective 2024-02-24 through 2024-03-07
Fri 07:00 Saint Louis (STL) 1 09:42 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-900 (739) 4:42 Operates only on 2024-03-08
Mon-Wed,Sat,Sun 07:00 Saint Louis (STL) 1 09:42 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:42 Effective 2024-03-09 through 2024-03-13
Daily 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:30 Effective 2024-03-14 through 2024-03-21
Fri 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 MAX 9 (7M9) 4:30 Operates only on 2024-03-22
Daily 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:30 Effective 2024-03-23 through 2024-03-30
Sat,Sun 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-900 (739) 4:30 Effective 2024-03-31 through 2024-04-07
Mon-Fri 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:30 Effective 2024-04-01 through 2024-04-15
Sat 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-800 (73H) 4:30 Operates only on 2024-04-13
Sun 07:00 Saint Louis (STL) 1 09:30 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737-900 (739) 4:30 Operates only on 2024-04-14
Daily 07:00 Saint Louis (STL) 1 09:25 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:25 Effective 2024-04-16 through 2024-05-15
Daily 07:00 Saint Louis (STL) 1 09:26 Seattle-Tacoma (SEA)
Alaska Airlines AS 473 Non-stop Boeing 737 (73J) 4:26 Effective from 2024-05-16




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Alaska Airlines flights from Saint Louis (STL) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS349
19:50
Saint Louis (STL) 1

22:34
Seattle-Tacoma (SEA)
Effective 2024-05-16 through 2024-09-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:44, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:18
Saint Louis (STL) 1

17:00
Seattle-Tacoma (SEA)
Effective 2024-01-08 through 2024-02-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:42, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:20
Saint Louis (STL) 1

16:56
Seattle-Tacoma (SEA)
Valid until 2024-01-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:36, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:21
Saint Louis (STL) 1

16:59
Seattle-Tacoma (SEA)
Effective 2024-02-15 through 2024-03-11
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:38, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Effective 2024-03-14 through 2024-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:32, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Operates only on 2024-03-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:32, non-stop
Boeing 737-900 (739)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Effective 2024-03-31 through 2024-04-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:32, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Effective 2024-04-06 through 2024-04-12
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 4:32, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Effective 2024-04-13 through 2024-04-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:32, non-stop
Boeing 737-900 (739)
Alaska Airlines AS388
14:26
Saint Louis (STL) 1

16:58
Seattle-Tacoma (SEA)
Operates only on 2024-04-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:32, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
14:35
Saint Louis (STL) 1

17:00
Seattle-Tacoma (SEA)
Effective 2024-04-16 through 2024-05-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:25, non-stop
Boeing 737 (73J)
Alaska Airlines AS388
17:30
Saint Louis (STL) 1

20:14
Seattle-Tacoma (SEA)
Effective from 2024-05-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:44, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:40
Seattle-Tacoma (SEA)
Valid until 2024-01-06
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 4:40, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:40
Seattle-Tacoma (SEA)
Operates only on 2024-01-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:40, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:40
Seattle-Tacoma (SEA)
Operates only on 2024-01-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:40, non-stop
Boeing 737-900 (739)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:42
Seattle-Tacoma (SEA)
Effective 2024-02-16 through 2024-02-23
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:42, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:42
Seattle-Tacoma (SEA)
Operates only on 2024-02-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:42, non-stop
Boeing 737-900 (739)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:42
Seattle-Tacoma (SEA)
Effective 2024-02-24 through 2024-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:42, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:42
Seattle-Tacoma (SEA)
Operates only on 2024-03-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:42, non-stop
Boeing 737-900 (739)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:42
Seattle-Tacoma (SEA)
Effective 2024-03-09 through 2024-03-13
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
Duration: 4:42, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Effective 2024-03-14 through 2024-03-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:30, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Operates only on 2024-03-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:30, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Effective 2024-03-23 through 2024-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:30, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Effective 2024-03-31 through 2024-04-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 4:30, non-stop
Boeing 737-900 (739)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Effective 2024-04-01 through 2024-04-15
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 4:30, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Operates only on 2024-04-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:30, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:30
Seattle-Tacoma (SEA)
Operates only on 2024-04-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:30, non-stop
Boeing 737-900 (739)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:25
Seattle-Tacoma (SEA)
Effective 2024-04-16 through 2024-05-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:25, non-stop
Boeing 737 (73J)
Alaska Airlines AS473
07:00
Saint Louis (STL) 1

09:26
Seattle-Tacoma (SEA)
Effective from 2024-05-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:26, non-stop
Boeing 737 (73J)
  • A domestic route departing from the Saint Louis airport (STL) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 1704 miles, or 2743 km.
  • The timezone of the departure airport is UTC-6 , 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 4:25 and 4:44.
All STL-SEA flights
All Alaska Airlines flights
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