Alaska Airlines flight AS 4278: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Fri 05:00 Chicago O'Hare (ORD) 3 07:55 Charlotte (CLT)
AS 4278 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Operates only on 2025-11-21
Codeshare flight, operated by American Airlines.(AA 1632)
Daily 05:15 Chicago O'Hare (ORD) 3 08:17 Charlotte (CLT)
AS 4278 Non-stop Airbus A321 (321) 2:02 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 1632)
Daily 07:00 Chicago O'Hare (ORD) 3 09:57 Charlotte (CLT)
AS 4278 Non-stop Airbus A321 (321) 1:57 Effective 2025-11-22 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 1784)
Tue,Wed 07:00 Chicago O'Hare (ORD) 3 10:04 Charlotte (CLT)
AS 4278 Non-stop Airbus A321 (321) 2:04 Effective 2026-01-06 through 2026-01-07
Codeshare flight, operated by American Airlines.(AA 1784)
Sat 07:10 Chicago O'Hare (ORD) 3 08:49 Nashville (BNA)
AS 4278 Non-stop Airbus A319 (319) 1:39 Operates only on 2025-05-10
Codeshare flight, operated by American Airlines.(AA 3007)
Mon,Wed-Fri,Sun 11:45 Chicago O'Hare (ORD) 3 14:14 Santa Ana (SNA)
AS 4278 Non-stop Boeing 737-800 (738) 4:29 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 1694)
Sat 13:23 Chicago O'Hare (ORD) 3 17:34 Miami (MIA)
AS 4278 Non-stop Boeing 737-800 (738) 3:11 Valid until 2025-05-03
Codeshare flight, operated by American Airlines.(AA 3304)
Mon-Fri,Sun 15:17 Chicago O'Hare (ORD) 3 19:24 Miami (MIA)
AS 4278 Non-stop Boeing 737-800 (738) 3:07 Effective 2025-06-05 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 1211)
Sat 15:20 Chicago O'Hare (ORD) 3 19:27 Miami (MIA)
AS 4278 Non-stop Boeing 737-800 (738) 3:07 Effective 2025-06-07 through 2025-06-28
Codeshare flight, operated by American Airlines.(AA 1211)
Daily 15:22 Chicago O'Hare (ORD) 3 19:35 Miami (MIA)
AS 4278 Non-stop Boeing 737-800 (738) 3:13 Effective 2025-07-05 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 1211)
Daily 16:15 Nashville (BNA) 18:42 Los Angeles (LAX)
AS 4278 Non-stop Boeing 737-800 (738) 4:27 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 3332)
Daily 16:19 Nashville (BNA) 19:00 Los Angeles (LAX)
AS 4278 Non-stop Boeing 737-800 (738) 4:41 Effective 2025-10-06 through 2025-10-25
Codeshare flight, operated by American Airlines.(AA 3332)
Wed 19:50 Phoenix Sky Harbor (PHX) 4 00:45 Saint Louis (STL) 1
AS 4278 Non-stop Canadair CRJ 700 (CR7) 2:55 Operates only on 2025-06-04
Codeshare flight, operated by American Airlines.(AA 4941)
The flight arrives 1 day after departure.
Daily 19:50 Phoenix Sky Harbor (PHX) 4 20:49 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:59 Effective 2026-01-10 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 6474)
Mon-Fri,Sun 21:57 Phoenix Sky Harbor (PHX) 4 22:45 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:48 Effective 2025-05-05 through 2025-05-16
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 21:57 Phoenix Sky Harbor (PHX) 4 22:45 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:48 Effective 2025-05-17 through 2025-05-23
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 21:57 Phoenix Sky Harbor (PHX) 4 22:45 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:48 Effective 2025-05-25 through 2025-06-03
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 22:45 Phoenix Sky Harbor (PHX) 4 23:38 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:53 Effective 2025-11-02 through 2025-11-20
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 22:45 Phoenix Sky Harbor (PHX) 4 23:41 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:56 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 22:45 Phoenix Sky Harbor (PHX) 4 23:38 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:53 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 6474)
Daily 22:45 Phoenix Sky Harbor (PHX) 4 23:34 Flagstaff Pulliam, Grand Canyon (FLG)
AS 4278 Non-stop Canadair CRJ 700 (CR7) 0:49 Effective from 2026-02-12
Codeshare flight, operated by American Airlines.(AA 6474)
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4278: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4278
05:00
Chicago O'Hare (ORD) 3

07:55
Charlotte (CLT)
Operates only on 2025-11-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 1632)
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Alaska Airlines AS4278
05:15
Chicago O'Hare (ORD) 3

08:17
Charlotte (CLT)
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1632)
Duration: 2:02, non-stop
Airbus A321 (321)
Alaska Airlines AS4278
07:00
Chicago O'Hare (ORD) 3

09:57
Charlotte (CLT)
Effective 2025-11-22 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1784)
Duration: 1:57, non-stop
Airbus A321 (321)
Alaska Airlines AS4278
07:00
Chicago O'Hare (ORD) 3

10:04
Charlotte (CLT)
Effective 2026-01-06 through 2026-01-07
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 1784)
Duration: 2:04, non-stop
Airbus A321 (321)
Alaska Airlines AS4278
07:10
Chicago O'Hare (ORD) 3

08:49
Nashville (BNA)
Operates only on 2025-05-10
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3007)
Duration: 1:39, non-stop
Airbus A319 (319)
Alaska Airlines AS4278
11:45
Chicago O'Hare (ORD) 3

14:14
Santa Ana (SNA)
Valid until 2025-05-04
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1694)
Duration: 4:29, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
13:23
Chicago O'Hare (ORD) 3

17:34
Miami (MIA)
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3304)
Duration: 3:11, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
15:17
Chicago O'Hare (ORD) 3

19:24
Miami (MIA)
Effective 2025-06-05 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1211)
Duration: 3:07, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
15:20
Chicago O'Hare (ORD) 3

19:27
Miami (MIA)
Effective 2025-06-07 through 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1211)
Duration: 3:07, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
15:22
Chicago O'Hare (ORD) 3

19:35
Miami (MIA)
Effective 2025-07-05 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1211)
Duration: 3:13, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
16:15
Nashville (BNA)

18:42
Los Angeles (LAX)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3332)
Duration: 4:27, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
16:19
Nashville (BNA)

19:00
Los Angeles (LAX)
Effective 2025-10-06 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3332)
Duration: 4:41, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4278
19:50
Phoenix Sky Harbor (PHX) 4

00:45(+1)
Saint Louis (STL) 1
Operates only on 2025-06-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4941)
Duration: 2:55, non-stop
Canadair CRJ 700 (CR7)
The flight arrives 1 day after departure.
Alaska Airlines AS4278
19:50
Phoenix Sky Harbor (PHX) 4

20:49
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2026-01-10 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:59, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
21:57
Phoenix Sky Harbor (PHX) 4

22:45
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-05-05 through 2025-05-16
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:48, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
21:57
Phoenix Sky Harbor (PHX) 4

22:45
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-05-17 through 2025-05-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:48, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
21:57
Phoenix Sky Harbor (PHX) 4

22:45
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-05-25 through 2025-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:48, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
22:45
Phoenix Sky Harbor (PHX) 4

23:38
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-11-02 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:53, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
22:45
Phoenix Sky Harbor (PHX) 4

23:41
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:56, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
22:45
Phoenix Sky Harbor (PHX) 4

23:38
Flagstaff Pulliam, Grand Canyon (FLG)
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:53, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4278
22:45
Phoenix Sky Harbor (PHX) 4

23:34
Flagstaff Pulliam, Grand Canyon (FLG)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6474)
Duration: 0:49, non-stop
Canadair CRJ 700 (CR7)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Charlotte (CLT)
  • Chicago O'Hare (ORD) - Miami (MIA)
  • Chicago O'Hare (ORD) - Nashville (BNA)
  • Chicago O'Hare (ORD) - Santa Ana (SNA)
  • Nashville (BNA) - Los Angeles (LAX)
  • Phoenix Sky Harbor (PHX) - Flagstaff Pulliam, Grand Canyon (FLG)
  • Phoenix Sky Harbor (PHX) - Saint Louis (STL)
All Alaska Airlines flights
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