Alaska Airlines flight AS 4340: Saint Louis - Phoenix Sky Harbor

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Sat 06:32 Saint Louis (STL) 1 09:18 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:46 Effective 2026-02-14 through 2026-03-07
Codeshare flight, operated by American Airlines.(AA 2574)
Mon-Fri 06:47 Saint Louis (STL) 1 09:33 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:46 Effective 2026-02-13 through 2026-03-06
Codeshare flight, operated by American Airlines.(AA 2574)
Sun 07:25 Saint Louis (STL) 1 10:04 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:39 Effective 2026-02-15 through 2026-03-01
Codeshare flight, operated by American Airlines.(AA 2574)
Mon-Thu,Sun 07:27 Saint Louis (STL) 1 10:14 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Effective 2026-01-06 through 2026-01-18
Codeshare flight, operated by American Airlines.(AA 2574)
Mon-Thu,Sun 07:27 Saint Louis (STL) 1 10:14 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Effective 2026-01-20 through 2026-01-26
Codeshare flight, operated by American Airlines.(AA 2574)
Mon-Thu,Sun 07:27 Saint Louis (STL) 1 10:14 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Effective 2026-01-28 through 2026-02-08
Codeshare flight, operated by American Airlines.(AA 2574)
Tue 07:27 Saint Louis (STL) 1 10:14 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Operates only on 2026-02-10
Codeshare flight, operated by American Airlines.(AA 2574)
Thu 07:30 Saint Louis (STL) 1 10:09 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:39 Operates only on 2026-02-12
Codeshare flight, operated by American Airlines.(AA 2574)
Fri,Sat 07:43 Saint Louis (STL) 1 10:30 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Effective 2026-01-09 through 2026-01-10
Codeshare flight, operated by American Airlines.(AA 2574)
Fri,Sat 07:43 Saint Louis (STL) 1 10:30 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Effective 2026-01-17 through 2026-02-07
Codeshare flight, operated by American Airlines.(AA 2574)
Tue 07:45 Saint Louis (STL) 1 10:18 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737 MAX 8 (7M8) 3:33 Operates only on 2026-01-27
Codeshare flight, operated by American Airlines.(AA 2574)
Mon,Wed 07:45 Saint Louis (STL) 1 10:18 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737 MAX 8 (7M8) 3:33 Effective 2026-02-09 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 07:49 Saint Louis (STL) 1 09:04 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:15 Effective 2026-08-05 through 2026-09-08
Codeshare flight, operated by American Airlines.(AA 2574)
Fri 07:52 Saint Louis (STL) 1 10:25 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737 MAX 8 (7M8) 3:33 Operates only on 2026-01-16
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 07:58 Saint Louis (STL) 1 09:38 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:40 Effective 2026-03-08 through 2026-04-06
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:00 Saint Louis (STL) 1 10:30 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:30 Valid until 2026-01-05
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:05 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:34 Effective from 2026-10-05
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:12 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:27 Effective 2026-04-07 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:21 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:18 Effective 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:24 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:15 Effective 2026-07-02 through 2026-08-04
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:26 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:13 Effective 2026-09-09 through 2026-10-04
Codeshare flight, operated by American Airlines.(AA 2574)
Mon 11:00 Saint Louis (STL) 1 13:47 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:47 Operates only on 2026-01-19
Codeshare flight, operated by American Airlines.(AA 2574)


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Alaska Airlines flight AS 4340:
Saint Louis - Phoenix Sky Harbor
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4340
06:32
Saint Louis (STL) 1

09:18
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-14 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:46, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Alaska Airlines AS4340
06:47
Saint Louis (STL) 1

09:33
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-13 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:46, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:25
Saint Louis (STL) 1

10:04
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-15 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:39, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:27
Saint Louis (STL) 1

10:14
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-06 through 2026-01-18
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:27
Saint Louis (STL) 1

10:14
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-20 through 2026-01-26
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:27
Saint Louis (STL) 1

10:14
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-28 through 2026-02-08
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:27
Saint Louis (STL) 1

10:14
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-02-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:30
Saint Louis (STL) 1

10:09
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:39, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:43
Saint Louis (STL) 1

10:30
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-09 through 2026-01-10
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:43
Saint Louis (STL) 1

10:30
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-17 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:45
Saint Louis (STL) 1

10:18
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-01-27
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:33, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:45
Saint Louis (STL) 1

10:18
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-09 through 2026-02-11
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:33, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:49
Saint Louis (STL) 1

09:04
Phoenix Sky Harbor (PHX) 4
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:15, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:52
Saint Louis (STL) 1

10:25
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:33, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Alaska Airlines AS4340
07:58
Saint Louis (STL) 1

09:38
Phoenix Sky Harbor (PHX) 4
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:40, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:00
Saint Louis (STL) 1

10:30
Phoenix Sky Harbor (PHX) 4
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:30, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:05
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:34, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:12
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:27, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:21
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:18, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:24
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:15, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4340
08:26
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:13, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Alaska Airlines AS4340
11:00
Saint Louis (STL) 1

13:47
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-01-19
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:47, non-stop
Airbus A319 (319)
  • AS 4340 is a domestic flight departing from the Saint Louis airport (STL) and arriving at Phoenix Sky Harbor airport (PHX).
  • The flight distance is 1259 miles, or 2025 km.
  • The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-7 . 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 3:13 and 3:47.
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