Alaska Airlines flight AS 4340: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Wed,Thu 07:00 Chicago O'Hare (ORD) 3 10:11 Newark Liberty, New York (EWR) A
AS 4340 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:11 Effective 2025-06-05 through 2025-07-03
Codeshare flight, operated by American Airlines.(AA 4333)
Wed,Thu 07:09 Chicago O'Hare (ORD) 3 10:22 Newark Liberty, New York (EWR) A
AS 4340 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:13 Effective 2025-07-09 through 2025-07-31
Codeshare flight, operated by American Airlines.(AA 4333)
Fri 07:17 Saint Louis (STL) 1 08:35 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:18 Operates only on 2025-07-04
Codeshare flight, operated by American Airlines.(AA 2574)
Mon,Thu-Sun 07:33 Saint Louis (STL) 1 09:00 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:27 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 2574)
Mon,Tue,Fri-Sun 07:42 Saint Louis (STL) 1 08:57 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:15 Effective 2025-07-05 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 2574)
Mon,Tue,Fri-Sun 07:45 Saint Louis (STL) 1 09:03 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:18 Effective 2025-06-06 through 2025-07-01
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 07:55 Saint Louis (STL) 1 10:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:44 Effective from 2026-02-12
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:03 Saint Louis (STL) 1 10:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737 MAX 8 (7M8) 3:36 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 2574)
Mon 08:04 Saint Louis (STL) 1 09:28 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:24 Operates only on 2025-05-05
Codeshare flight, operated by American Airlines.(AA 2574)
Mon,Thu-Sun 08:05 Saint Louis (STL) 1 09:25 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:20 Effective 2025-05-08 through 2025-06-02
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:07 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:32 Effective 2025-10-06 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:08 Saint Louis (STL) 1 10:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A319 (319) 3:31 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 2574)
Tue,Wed 08:09 Saint Louis (STL) 1 09:29 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:20 Effective 2025-05-06 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:09 Saint Louis (STL) 1 10:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737 MAX 8 (7M8) 3:30 Effective 2025-11-02 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:14 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:25 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:14 Saint Louis (STL) 1 10:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Airbus A320 (320) 3:25 Effective 2026-01-06 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 2574)
Daily 08:23 Saint Louis (STL) 1 09:39 Phoenix Sky Harbor (PHX) 4
AS 4340 Non-stop Boeing 737-800 (738) 3:16 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 2574)
Wed,Thu 10:41 Newark Liberty, New York (EWR) A 12:16 Chicago O'Hare (ORD) 3
AS 4340 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:35 Effective 2025-06-05 through 2025-07-03
Codeshare flight, operated by American Airlines.(AA 4333)
Wed,Thu 10:52 Newark Liberty, New York (EWR) A 12:32 Chicago O'Hare (ORD) 3
AS 4340 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:40 Effective 2025-07-09 through 2025-07-31
Codeshare flight, operated by American Airlines.(AA 4333)
This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4340: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4340
07:00
Chicago O'Hare (ORD) 3

10:11
Newark Liberty, New York (EWR) A
Effective 2025-06-05 through 2025-07-03
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4333)
Duration: 2:11, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4340
07:09
Chicago O'Hare (ORD) 3

10:22
Newark Liberty, New York (EWR) A
Effective 2025-07-09 through 2025-07-31
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4333)
Duration: 2:13, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4340
07:17
Saint Louis (STL) 1

08:35
Phoenix Sky Harbor (PHX) 4
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:18, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
07:33
Saint Louis (STL) 1

09:00
Phoenix Sky Harbor (PHX) 4
Valid until 2025-05-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:27, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
07:42
Saint Louis (STL) 1

08:57
Phoenix Sky Harbor (PHX) 4
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:15, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
07:45
Saint Louis (STL) 1

09:03
Phoenix Sky Harbor (PHX) 4
Effective 2025-06-06 through 2025-07-01
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:18, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
07:55
Saint Louis (STL) 1

10:39
Phoenix Sky Harbor (PHX) 4
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:44, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
08:03
Saint Louis (STL) 1

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:36, non-stop
Boeing 737 MAX 8 (7M8)
Alaska Airlines AS4340
08:04
Saint Louis (STL) 1

09:28
Phoenix Sky Harbor (PHX) 4
Operates only on 2025-05-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:24, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
08:05
Saint Louis (STL) 1

09:25
Phoenix Sky Harbor (PHX) 4
Effective 2025-05-08 through 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:20, non-stop
Airbus A320 (320)
Alaska Airlines AS4340
08:07
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-06 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:32, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
08:08
Saint Louis (STL) 1

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:31, non-stop
Airbus A319 (319)
Alaska Airlines AS4340
08:09
Saint Louis (STL) 1

09:29
Phoenix Sky Harbor (PHX) 4
Effective 2025-05-06 through 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:20, non-stop
Airbus A320 (320)
Alaska Airlines AS4340
08:09
Saint Louis (STL) 1

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Alaska Airlines AS4340
08:14
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:25, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
08:14
Saint Louis (STL) 1

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:25, non-stop
Airbus A320 (320)
Alaska Airlines AS4340
08:23
Saint Louis (STL) 1

09:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2574)
Duration: 3:16, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4340
10:41
Newark Liberty, New York (EWR) A

12:16
Chicago O'Hare (ORD) 3
Effective 2025-06-05 through 2025-07-03
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4333)
Duration: 2:35, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4340
10:52
Newark Liberty, New York (EWR) A

12:32
Chicago O'Hare (ORD) 3
Effective 2025-07-09 through 2025-07-31
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4333)
Duration: 2:40, non-stop
Embraer EMB 170 / EMB 175 (E70)
This flight number is listed as serving the following routes:
  • Newark Liberty, New York (EWR) - Chicago O'Hare (ORD)
  • Saint Louis (STL) - Phoenix Sky Harbor (PHX)
All Alaska Airlines flights
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