Alaska Airlines flight AS 4255: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Sun 08:05 Chicago O'Hare (ORD) 3 10:14 Traverse City (TVC)
AS 4255 Non-stop Embraer ERJ 145 (ER4) 1:09 Effective 2025-05-11 through 2025-05-12
Codeshare flight, operated by American Airlines.(AA 5966)
Daily 08:20 Philadelphia (PHL) 11:42 Key West (EYW)
AS 4255 Non-stop Embraer EMB 175 (E75) 3:22 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 4442)
Daily 08:20 Philadelphia (PHL) 11:51 Key West (EYW)
AS 4255 Non-stop Embraer EMB 175 (E75) 3:31 Effective 2025-12-19 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 4442)
Tue,Wed 08:20 Philadelphia (PHL) 11:50 Key West (EYW)
AS 4255 Non-stop Embraer EMB 175 (E75) 3:30 Effective 2026-01-06 through 2026-01-07
Codeshare flight, operated by American Airlines.(AA 4442)
Daily 09:40 Chicago O'Hare (ORD) 3 12:28 Harrisburg (MDT)
AS 4255 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:48 Effective 2025-11-02 through 2025-11-20
Codeshare flight, operated by American Airlines.(AA 3402)
Daily 10:30 Philadelphia (PHL) 13:39 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:09 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 1898)
Mon-Sat 10:35 Philadelphia (PHL) 13:39 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:04 Effective 2025-05-05 through 2025-05-10
Codeshare flight, operated by American Airlines.(AA 1898)
Mon 10:40 Traverse City (TVC) 11:06 Chicago O'Hare (ORD) 3
AS 4255 Non-stop Embraer ERJ 145 (ER4) 1:26 Operates only on 2025-05-12
Codeshare flight, operated by American Airlines.(AA 5966)
Mon-Fri,Sun 10:40 Philadelphia (PHL) 13:51 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:11 Effective 2025-07-06 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 1898)
Sat 10:40 Philadelphia (PHL) 13:50 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:10 Effective 2025-07-12 through 2025-08-02
Codeshare flight, operated by American Airlines.(AA 1898)
Mon-Fri,Sun 10:44 Philadelphia (PHL) 13:48 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:04 Effective 2025-06-05 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 1898)
Sat 10:45 Philadelphia (PHL) 13:49 Key West (EYW)
AS 4255 Non-stop Airbus A319 (319) 3:04 Effective 2025-06-07 through 2025-06-28
Codeshare flight, operated by American Airlines.(AA 1898)
Daily 13:10 Chicago O'Hare (ORD) 3 13:59 Milwaukee (MKE)
AS 4255 Non-stop Canadair CRJ 700 (CR7) 0:49 Effective 2025-11-21 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 4972)
Daily 15:52 Dallas Fort Worth (DFW) E 17:35 Brownsville (BRO)
AS 4255 Non-stop Canadair CRJ 700 (CR7) 1:43 Effective 2025-05-13 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 6418)
Daily 16:45 Dallas Fort Worth (DFW) E 18:25 Brownsville (BRO)
AS 4255 Non-stop Canadair CRJ 700 (CR7) 1:40 Effective from 2026-02-12
Codeshare flight, operated by American Airlines.(AA 6281)
Daily 18:32 Wilkes-Barre/Scranton (AVP) 19:50 Chicago O'Hare (ORD) 3
AS 4255 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:18 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 3684)
Daily 20:20 Phoenix Sky Harbor (PHX) 4 22:14 Monterey/Carmel (MRY)
AS 4255 Non-stop Airbus A319 (319) 1:54 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 2309)
Daily 20:20 Phoenix Sky Harbor (PHX) 4 22:15 Monterey/Carmel (MRY)
AS 4255 Non-stop Airbus A319 (319) 1:55 Effective 2025-10-06 through 2025-10-25
Codeshare flight, operated by American Airlines.(AA 2309)
Sat 20:57 Dallas Fort Worth (DFW) E 22:18 San Angelo (SJT)
AS 4255 Non-stop Canadair CRJ 700 (CR7) 1:21 Valid until 2025-05-03
Codeshare flight, operated by American Airlines.(AA 6269)
Mon-Fri,Sun 22:45 Dallas Fort Worth (DFW) E 23:58 San Angelo (SJT)
AS 4255 Non-stop Canadair CRJ 700 (CR7) 1:13 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 6269)
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4255: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4255
08:05
Chicago O'Hare (ORD) 3

10:14
Traverse City (TVC)
Effective 2025-05-11 through 2025-05-12
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5966)
Duration: 1:09, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4255
08:20
Philadelphia (PHL)

11:42
Key West (EYW)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 3:22, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4255
08:20
Philadelphia (PHL)

11:51
Key West (EYW)
Effective 2025-12-19 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 3:31, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4255
08:20
Philadelphia (PHL)

11:50
Key West (EYW)
Effective 2026-01-06 through 2026-01-07
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 3:30, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4255
09:40
Chicago O'Hare (ORD) 3

12:28
Harrisburg (MDT)
Effective 2025-11-02 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3402)
Duration: 1:48, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4255
10:30
Philadelphia (PHL)

13:39
Key West (EYW)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:09, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
10:35
Philadelphia (PHL)

13:39
Key West (EYW)
Effective 2025-05-05 through 2025-05-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:04, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
10:40
Traverse City (TVC)

11:06
Chicago O'Hare (ORD) 3
Operates only on 2025-05-12
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 5966)
Duration: 1:26, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4255
10:40
Philadelphia (PHL)

13:51
Key West (EYW)
Effective 2025-07-06 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:11, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
10:40
Philadelphia (PHL)

13:50
Key West (EYW)
Effective 2025-07-12 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:10, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
10:44
Philadelphia (PHL)

13:48
Key West (EYW)
Effective 2025-06-05 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:04, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
10:45
Philadelphia (PHL)

13:49
Key West (EYW)
Effective 2025-06-07 through 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1898)
Duration: 3:04, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
13:10
Chicago O'Hare (ORD) 3

13:59
Milwaukee (MKE)
Effective 2025-11-21 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4972)
Duration: 0:49, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4255
15:52
Dallas Fort Worth (DFW) E

17:35
Brownsville (BRO)
Effective 2025-05-13 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6418)
Duration: 1:43, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4255
16:45
Dallas Fort Worth (DFW) E

18:25
Brownsville (BRO)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6281)
Duration: 1:40, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4255
18:32
Wilkes-Barre/Scranton (AVP)

19:50
Chicago O'Hare (ORD) 3
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3684)
Duration: 2:18, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4255
20:20
Phoenix Sky Harbor (PHX) 4

22:14
Monterey/Carmel (MRY)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2309)
Duration: 1:54, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
20:20
Phoenix Sky Harbor (PHX) 4

22:15
Monterey/Carmel (MRY)
Effective 2025-10-06 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2309)
Duration: 1:55, non-stop
Airbus A319 (319)
Alaska Airlines AS4255
20:57
Dallas Fort Worth (DFW) E

22:18
San Angelo (SJT)
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 6269)
Duration: 1:21, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4255
22:45
Dallas Fort Worth (DFW) E

23:58
San Angelo (SJT)
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6269)
Duration: 1:13, non-stop
Canadair CRJ 700 (CR7)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Harrisburg (MDT)
  • Chicago O'Hare (ORD) - Milwaukee (MKE)
  • Dallas Fort Worth (DFW) - Brownsville (BRO)
  • Dallas Fort Worth (DFW) - San Angelo (SJT)
  • Philadelphia (PHL) - Key West (EYW)
  • Phoenix Sky Harbor (PHX) - Monterey/Carmel (MRY)
  • Traverse City (TVC) - Chicago O'Hare (ORD)
  • Wilkes-Barre/Scranton (AVP) - Chicago O'Hare (ORD)
All Alaska Airlines flights
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