Alaska Airlines flight AS 4251: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Sun 05:45 Raleigh/Durham (RDU) 2 07:00 Ronald Reagan Washington (DCA) 2
AS 4251 Non-stop Embraer EMB 175 (E75) 1:15 Effective 2025-05-11 through 2025-06-01
Codeshare flight, operated by American Airlines.(AA 4757)
Mon-Fri 08:10 Chicago O'Hare (ORD) 3 10:09 Tulsa (TUL)
AS 4251 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:59 Effective 2025-05-05 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 3732)
Sat 10:00 Chicago O'Hare (ORD) 3 14:04 West Palm Beach (PBI)
AS 4251 Non-stop Boeing 737-800 (738) 3:04 Operates only on 2025-05-24
Codeshare flight, operated by American Airlines.(AA 1398)
Sat 12:14 Chicago O'Hare (ORD) 3 16:15 West Palm Beach (PBI)
AS 4251 Non-stop Boeing 737-800 (738) 3:01 Effective 2025-05-10 through 2025-05-17
Codeshare flight, operated by American Airlines.(AA 1398)
Sat 12:14 Chicago O'Hare (ORD) 3 16:15 West Palm Beach (PBI)
AS 4251 Non-stop Boeing 737-800 (738) 3:01 Operates only on 2025-05-31
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 13:44 Chicago O'Hare (ORD) 3 17:44 West Palm Beach (PBI)
AS 4251 Non-stop Boeing 737-800 (738) 3:00 Effective 2025-08-06 through 2025-08-19
Codeshare flight, operated by American Airlines.(AA 1398)
Mon,Thu,Fri,Sun 13:44 Chicago O'Hare (ORD) 3 17:44 West Palm Beach (PBI)
AS 4251 Non-stop Boeing 737-800 (738) 3:00 Effective 2025-08-21 through 2025-10-03
Codeshare flight, operated by American Airlines.(AA 1398)
Sat 17:06 West Palm Beach (PBI) 19:30 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:24 Valid until 2025-05-03
Codeshare flight, operated by American Airlines.(AA 1398)
Mon,Thu,Fri,Sun 17:16 West Palm Beach (PBI) 19:40 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:24 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 17:21 West Palm Beach (PBI) 19:45 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:24 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 17:22 West Palm Beach (PBI) 19:45 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:23 Effective 2025-11-02 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 17:24 West Palm Beach (PBI) 19:45 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:21 Effective from 2026-02-12
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 17:25 West Palm Beach (PBI) 19:45 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:20 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 17:30 Chicago O'Hare (ORD) 3 20:27 Harrisburg (MDT)
AS 4251 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:57 Effective 2026-01-06 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 3343)
Tue 17:40 Dallas Fort Worth (DFW) 19:29 Nashville (BNA)
AS 4251 Non-stop Airbus A321 (321) 1:49 Operates only on 2025-07-01
Codeshare flight, operated by American Airlines.(AA 2750)
Daily 18:41 West Palm Beach (PBI) 20:58 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:17 Effective 2025-08-06 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 18:52 West Palm Beach (PBI) 21:15 Chicago O'Hare (ORD) 3
AS 4251 Non-stop Boeing 737-800 (738) 3:23 Effective 2025-10-06 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 1398)
Daily 21:42 Dallas Fort Worth (DFW) 23:33 Nashville (BNA)
AS 4251 Non-stop Airbus A319 (319) 1:51 Effective 2025-06-05 through 2025-06-30
Codeshare flight, operated by American Airlines.(AA 2750)
Mon-Thu,Sat,Sun 21:42 Dallas Fort Worth (DFW) 23:33 Nashville (BNA)
AS 4251 Non-stop Airbus A319 (319) 1:51 Effective 2025-07-02 through 2025-07-10
Codeshare flight, operated by American Airlines.(AA 2750)
Daily 21:42 Dallas Fort Worth (DFW) 23:33 Nashville (BNA)
AS 4251 Non-stop Airbus A319 (319) 1:51 Effective 2025-07-11 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 2750)
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4251: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4251
05:45
Raleigh/Durham (RDU) 2

07:00
Ronald Reagan Washington (DCA) 2
Effective 2025-05-11 through 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4757)
Duration: 1:15, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4251
08:10
Chicago O'Hare (ORD) 3

10:09
Tulsa (TUL)
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3732)
Duration: 1:59, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4251
10:00
Chicago O'Hare (ORD) 3

14:04
West Palm Beach (PBI)
Operates only on 2025-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:04, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
12:14
Chicago O'Hare (ORD) 3

16:15
West Palm Beach (PBI)
Effective 2025-05-10 through 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:01, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
12:14
Chicago O'Hare (ORD) 3

16:15
West Palm Beach (PBI)
Operates only on 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:01, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
13:44
Chicago O'Hare (ORD) 3

17:44
West Palm Beach (PBI)
Effective 2025-08-06 through 2025-08-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:00, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
13:44
Chicago O'Hare (ORD) 3

17:44
West Palm Beach (PBI)
Effective 2025-08-21 through 2025-10-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:00, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:06
West Palm Beach (PBI)

19:30
Chicago O'Hare (ORD) 3
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:24, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:16
West Palm Beach (PBI)

19:40
Chicago O'Hare (ORD) 3
Valid until 2025-05-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:24, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:21
West Palm Beach (PBI)

19:45
Chicago O'Hare (ORD) 3
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:24, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:22
West Palm Beach (PBI)

19:45
Chicago O'Hare (ORD) 3
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:23, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:24
West Palm Beach (PBI)

19:45
Chicago O'Hare (ORD) 3
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:21, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:25
West Palm Beach (PBI)

19:45
Chicago O'Hare (ORD) 3
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:20, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
17:30
Chicago O'Hare (ORD) 3

20:27
Harrisburg (MDT)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3343)
Duration: 1:57, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4251
17:40
Dallas Fort Worth (DFW)

19:29
Nashville (BNA)
Operates only on 2025-07-01
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2750)
Duration: 1:49, non-stop
Airbus A321 (321)
Alaska Airlines AS4251
18:41
West Palm Beach (PBI)

20:58
Chicago O'Hare (ORD) 3
Effective 2025-08-06 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:17, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
18:52
West Palm Beach (PBI)

21:15
Chicago O'Hare (ORD) 3
Effective 2025-10-06 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1398)
Duration: 3:23, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4251
21:42
Dallas Fort Worth (DFW)

23:33
Nashville (BNA)
Effective 2025-06-05 through 2025-06-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2750)
Duration: 1:51, non-stop
Airbus A319 (319)
Alaska Airlines AS4251
21:42
Dallas Fort Worth (DFW)

23:33
Nashville (BNA)
Effective 2025-07-02 through 2025-07-10
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2750)
Duration: 1:51, non-stop
Airbus A319 (319)
Alaska Airlines AS4251
21:42
Dallas Fort Worth (DFW)

23:33
Nashville (BNA)
Effective 2025-07-11 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2750)
Duration: 1:51, non-stop
Airbus A319 (319)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Harrisburg (MDT)
  • Chicago O'Hare (ORD) - Tulsa (TUL)
  • Chicago O'Hare (ORD) - West Palm Beach (PBI)
  • Dallas Fort Worth (DFW) - Nashville (BNA)
  • Raleigh/Durham (RDU) - Ronald Reagan Washington (DCA)
All Alaska Airlines flights
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