Alaska Airlines flight AS 521: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed-Fri 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 MAX 9 (7M9) 4:38 Effective 2025-05-15 through 2025-05-21
Sat 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737-800 (73H) 4:38 Effective 2025-05-17 through 2025-05-24
Mon,Tue,Thu,Fri,Sun 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 (73J) 4:38 Effective 2025-05-18 through 2025-05-23
Wed,Thu,Sun 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 MAX 9 (7M9) 4:38 Effective 2025-05-25 through 2025-05-29
Mon 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737-800 (73H) 4:38 Operates only on 2025-05-26
Mon,Tue,Fri-Sun 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 (73J) 4:38 Effective 2025-05-27 through 2025-06-02
Daily 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 MAX 9 (7M9) 4:38 Effective 2025-06-03 through 2025-06-10
Wed 13:34 Austin (AUS) 16:12 Seattle-Tacoma (SEA)
AS 521 Non-stop Boeing 737 (73J) 4:38 Operates only on 2025-06-11
Daily 14:35 Seattle-Tacoma (SEA) 16:44 San Jose (SJC) B
AS 521 Non-stop Boeing 737 (73J) 2:09 Effective from 2025-10-26
Sun 14:40 Everett (PAE) 17:27 Phoenix Sky Harbor (PHX) 3
AS 521 Non-stop Boeing 737 MAX 9 (7M9) 2:47 Valid until 2025-05-11
This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 521: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-05-15 through 2025-05-21
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 4:38, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-05-17 through 2025-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:38, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-05-18 through 2025-05-23
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:38, non-stop
Boeing 737 (73J)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-05-25 through 2025-05-29
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 4:38, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Operates only on 2025-05-26
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:38, non-stop
Boeing 737-800 (73H)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-05-27 through 2025-06-02
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 4:38, non-stop
Boeing 737 (73J)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Effective 2025-06-03 through 2025-06-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:38, non-stop
Boeing 737 MAX 9 (7M9)
Alaska Airlines AS521
13:34
Austin (AUS)

16:12
Seattle-Tacoma (SEA)
Operates only on 2025-06-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:38, non-stop
Boeing 737 (73J)
Alaska Airlines AS521
14:35
Seattle-Tacoma (SEA)

16:44
San Jose (SJC) B
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:09, non-stop
Boeing 737 (73J)
Alaska Airlines AS521
14:40
Everett (PAE)

17:27
Phoenix Sky Harbor (PHX) 3
Valid until 2025-05-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:47, non-stop
Boeing 737 MAX 9 (7M9)
This flight number is listed as serving the following routes:
  • Austin (AUS) - Seattle-Tacoma (SEA)
  • Everett (PAE) - Phoenix Sky Harbor (PHX)
  • Seattle-Tacoma (SEA) - San Jose (SJC)
All Alaska Airlines flights
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