Alaska Airlines flight AS 4303: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Tue 06:27 Milwaukee (MKE) 07:28 Chicago O'Hare (ORD) 3
AS 4303 Non-stop Canadair CRJ 700 (CR7) 1:01 Effective 2025-07-08 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 6274)
Daily 08:20 Philadelphia (PHL) F 09:53 Madison (MSN)
AS 4303 Non-stop Embraer ERJ 145 (ER4) 2:33 Effective 2025-11-02 through 2025-11-20
Codeshare flight, operated by American Airlines.(AA 5714)
Daily 08:20 Philadelphia (PHL) F 09:53 Madison (MSN)
AS 4303 Non-stop Embraer ERJ 145 (ER4) 2:33 Effective 2025-11-22 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 5714)
Daily 08:20 Philadelphia (PHL) F 09:56 Madison (MSN)
AS 4303 Non-stop Embraer ERJ 145 (ER4) 2:36 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 5714)
Daily 08:20 Philadelphia (PHL) F 10:00 Madison (MSN)
AS 4303 Non-stop Embraer ERJ 145 (ER4) 2:40 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 5714)
Fri 13:10 Chicago O'Hare (ORD) 3 14:55 Kansas City (MCI)
AS 4303 Non-stop Canadair CRJ 700 (CR7) 1:45 Operates only on 2025-11-21
Codeshare flight, operated by American Airlines.(AA 6249)
Fri 13:30 Phoenix Sky Harbor (PHX) 4 18:31 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 3:01 Operates only on 2025-07-04
Codeshare flight, operated by American Airlines.(AA 890)
Tue 13:38 Chicago O'Hare (ORD) 3 16:16 Buffalo (BUF)
AS 4303 Non-stop Canadair CRJ 700 (CR7) 1:38 Operates only on 2025-06-10
Codeshare flight, operated by American Airlines.(AA 4946)
Fri 16:19 Kansas City (MCI) 18:00 Chicago O'Hare (ORD) 3
AS 4303 Non-stop Canadair CRJ 700 (CR7) 1:41 Operates only on 2025-11-21
Codeshare flight, operated by American Airlines.(AA 6249)
Tue 16:46 Buffalo (BUF) 17:49 Chicago O'Hare (ORD) 3
AS 4303 Non-stop Canadair CRJ 700 (CR7) 2:03 Operates only on 2025-06-10
Codeshare flight, operated by American Airlines.(AA 4946)
Daily 18:35 Philadelphia (PHL) 20:44 Charleston (CHS)
AS 4303 Non-stop Airbus A319 (319) 2:09 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 2462)
Daily 18:35 Philadelphia (PHL) 20:35 Charleston (CHS)
AS 4303 Non-stop Airbus A319 (319) 2:00 Effective from 2026-01-06
Codeshare flight, operated by American Airlines.(AA 2462)
Daily 18:50 Phoenix Sky Harbor (PHX) 4 23:48 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 2:58 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 890)
Daily 18:50 Phoenix Sky Harbor (PHX) 4 23:47 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 2:57 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 890)
Daily 18:50 Phoenix Sky Harbor (PHX) 4 23:49 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 2:59 Effective 2025-10-06 through 2025-10-25
Codeshare flight, operated by American Airlines.(AA 890)
Mon,Thu-Sun 18:54 Phoenix Sky Harbor (PHX) 4 23:50 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 2:56 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 890)
Wed 18:55 Phoenix Sky Harbor (PHX) 4 23:48 Saint Louis (STL) 1
AS 4303 Non-stop Airbus A319 (319) 2:53 Operates only on 2025-06-04
Codeshare flight, operated by American Airlines.(AA 890)
Mon,Thu-Sun 18:57 Phoenix Sky Harbor (PHX) 4 23:59 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 3:02 Effective 2025-06-05 through 2025-07-03
Codeshare flight, operated by American Airlines.(AA 890)
Daily 19:01 Phoenix Sky Harbor (PHX) 4 23:58 Saint Louis (STL) 1
AS 4303 Non-stop Airbus A320 (320) 2:57 Effective 2025-05-05 through 2025-05-23
Codeshare flight, operated by American Airlines.(AA 890)
Daily 19:01 Phoenix Sky Harbor (PHX) 4 23:58 Saint Louis (STL) 1
AS 4303 Non-stop Airbus A320 (320) 2:57 Effective 2025-05-25 through 2025-06-03
Codeshare flight, operated by American Airlines.(AA 890)
Mon,Thu-Sun 19:17 Phoenix Sky Harbor (PHX) 4 00:19 Saint Louis (STL) 1
AS 4303 Non-stop Boeing 737-800 (738) 3:02 Effective 2025-07-05 through 2025-08-04
Codeshare flight, operated by American Airlines.(AA 890)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4303: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4303
06:27
Milwaukee (MKE)

07:28
Chicago O'Hare (ORD) 3
Effective 2025-07-08 through 2025-08-05
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6274)
Duration: 1:01, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4303
08:20
Philadelphia (PHL) F

09:53
Madison (MSN)
Effective 2025-11-02 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5714)
Duration: 2:33, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4303
08:20
Philadelphia (PHL) F

09:53
Madison (MSN)
Effective 2025-11-22 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5714)
Duration: 2:33, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4303
08:20
Philadelphia (PHL) F

09:56
Madison (MSN)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5714)
Duration: 2:36, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4303
08:20
Philadelphia (PHL) F

10:00
Madison (MSN)
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5714)
Duration: 2:40, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4303
13:10
Chicago O'Hare (ORD) 3

14:55
Kansas City (MCI)
Operates only on 2025-11-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6249)
Duration: 1:45, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4303
13:30
Phoenix Sky Harbor (PHX) 4

18:31
Saint Louis (STL) 1
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 3:01, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
13:38
Chicago O'Hare (ORD) 3

16:16
Buffalo (BUF)
Operates only on 2025-06-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4946)
Duration: 1:38, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4303
16:19
Kansas City (MCI)

18:00
Chicago O'Hare (ORD) 3
Operates only on 2025-11-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6249)
Duration: 1:41, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4303
16:46
Buffalo (BUF)

17:49
Chicago O'Hare (ORD) 3
Operates only on 2025-06-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4946)
Duration: 2:03, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4303
18:35
Philadelphia (PHL)

20:44
Charleston (CHS)
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2462)
Duration: 2:09, non-stop
Airbus A319 (319)
Alaska Airlines AS4303
18:35
Philadelphia (PHL)

20:35
Charleston (CHS)
Effective from 2026-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2462)
Duration: 2:00, non-stop
Airbus A319 (319)
Alaska Airlines AS4303
18:50
Phoenix Sky Harbor (PHX) 4

23:48
Saint Louis (STL) 1
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:58, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
18:50
Phoenix Sky Harbor (PHX) 4

23:47
Saint Louis (STL) 1
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:57, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
18:50
Phoenix Sky Harbor (PHX) 4

23:49
Saint Louis (STL) 1
Effective 2025-10-06 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:59, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
18:54
Phoenix Sky Harbor (PHX) 4

23:50
Saint Louis (STL) 1
Valid until 2025-05-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:56, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
18:55
Phoenix Sky Harbor (PHX) 4

23:48
Saint Louis (STL) 1
Operates only on 2025-06-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:53, non-stop
Airbus A319 (319)
Alaska Airlines AS4303
18:57
Phoenix Sky Harbor (PHX) 4

23:59
Saint Louis (STL) 1
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 3:02, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4303
19:01
Phoenix Sky Harbor (PHX) 4

23:58
Saint Louis (STL) 1
Effective 2025-05-05 through 2025-05-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:57, non-stop
Airbus A320 (320)
Alaska Airlines AS4303
19:01
Phoenix Sky Harbor (PHX) 4

23:58
Saint Louis (STL) 1
Effective 2025-05-25 through 2025-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 2:57, non-stop
Airbus A320 (320)
Alaska Airlines AS4303
19:17
Phoenix Sky Harbor (PHX) 4

00:19(+1)
Saint Louis (STL) 1
Effective 2025-07-05 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 890)
Duration: 3:02, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Buffalo (BUF)
  • Kansas City (MCI) - Chicago O'Hare (ORD)
  • Milwaukee (MKE) - Chicago O'Hare (ORD)
  • Philadelphia (PHL) - Charleston (CHS)
  • Philadelphia (PHL) - Madison (MSN)
  • Phoenix Sky Harbor (PHX) - Saint Louis (STL)
All Alaska Airlines flights
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