Alaska Airlines flight AS 4509: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 10:20 San Antonio (SAT) 11:39 Dallas Fort Worth (DFW)
AS 4509 Non-stop Boeing 737-800 (738) 1:19 Effective 2026-01-07 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 888)
Tue 11:00 San Antonio (SAT) 12:17 Dallas Fort Worth (DFW)
AS 4509 Non-stop Airbus A321 (321) 1:17 Operates only on 2026-01-06
Codeshare flight, operated by American Airlines.(AA 888)
Mon-Fri,Sun 13:49 Chicago O'Hare (ORD) 3 16:09 John Glenn Columbus (CMH)
AS 4509 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:20 Effective 2025-08-10 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 3645)
Daily 16:10 Dallas Fort Worth (DFW) 19:16 Indianapolis (IND)
AS 4509 Non-stop Boeing 737-800 (738) 2:06 Effective 2025-05-05 through 2025-05-22
Codeshare flight, operated by American Airlines.(AA 2798)
Fri 16:10 Dallas Fort Worth (DFW) 19:16 Indianapolis (IND)
AS 4509 Non-stop Airbus A321 (321) 2:06 Operates only on 2025-05-23
Codeshare flight, operated by American Airlines.(AA 2798)
Daily 16:10 Dallas Fort Worth (DFW) 19:16 Indianapolis (IND)
AS 4509 Non-stop Boeing 737-800 (738) 2:06 Effective 2025-05-24 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 2798)
Daily 16:35 Dallas Fort Worth (DFW) 19:41 Indianapolis (IND)
AS 4509 Non-stop Boeing 737-800 (738) 2:06 Effective from 2026-02-12
Codeshare flight, operated by American Airlines.(AA 2366)
Daily 18:51 Chicago O'Hare (ORD) 3 22:00 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Boeing 737 MAX 8 (7M8) 2:09 Effective 2025-11-02 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 603)
Sat,Sun 18:56 Chicago O'Hare (ORD) 3 22:00 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Airbus A319 (319) 2:04 Effective 2025-10-04 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 1787)
Thu,Fri 19:17 Chicago O'Hare (ORD) 3 22:15 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Airbus A319 (319) 1:58 Effective 2025-06-05 through 2025-06-06
Codeshare flight, operated by American Airlines.(AA 1787)
Daily 19:20 Chicago O'Hare (ORD) 3 22:15 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 603)
Daily 19:29 Chicago O'Hare (ORD) 3 22:28 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Boeing 737-800 (738) 1:59 Effective 2025-10-06 through 2025-11-01
Codeshare flight, operated by American Airlines.(AA 1787)
Mon-Fri,Sun 19:30 Chicago O'Hare (ORD) 3 21:28 Huntsville (HSV)
AS 4509 Non-stop Canadair CRJ 700 (CR7) 1:58 Effective 2025-09-03 through 2025-10-03
Codeshare flight, operated by American Airlines.(AA 6365)
Daily 19:33 Chicago O'Hare (ORD) 3 22:34 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Airbus A319 (319) 2:01 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 603)
Mon-Fri,Sun 19:47 Ronald Reagan Washington (DCA) 2 21:22 Charlotte (CLT)
AS 4509 Non-stop Canadair CRJ 900 (CR9) 1:35 Effective 2025-07-06 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 5072)
Mon-Fri,Sun 19:52 Ronald Reagan Washington (DCA) 2 21:03 Pittsburgh (PIT)
AS 4509 Non-stop Embraer EMB 175 (E75) 1:11 Valid until 2025-05-02
Codeshare flight, operated by American Airlines.(AA 4349)
Sat 19:59 Ronald Reagan Washington (DCA) 2 21:40 Charlotte (CLT)
AS 4509 Non-stop Canadair CRJ 900 (CR9) 1:41 Effective 2025-07-26 through 2025-08-02
Codeshare flight, operated by American Airlines.(AA 5072)
Sat 20:37 Chicago O'Hare (ORD) 3 23:50 Ronald Reagan Washington (DCA) 2
AS 4509 Non-stop Airbus A319 (319) 2:13 Effective 2025-08-09 through 2025-09-27
Codeshare flight, operated by American Airlines.(AA 903)
Tue,Wed 20:40 Chicago O'Hare (ORD) 3 22:18 Des Moines (DSM)
AS 4509 Non-stop Embraer EMB 175 (E75) 1:38 Effective 2025-07-01 through 2025-07-02
Codeshare flight, operated by American Airlines.(AA 4442)
Wed-Fri 20:40 Chicago O'Hare (ORD) 3 23:25 Detroit (DTW) E
AS 4509 Non-stop Canadair CRJ 700 (CR7) 1:45 Effective 2025-08-06 through 2025-08-08
Codeshare flight, operated by American Airlines.(AA 6291)
Daily 22:30 Chicago O'Hare (ORD) 3 23:52 Des Moines (DSM)
AS 4509 Non-stop Embraer EMB 175 (E75) 1:22 Effective 2025-06-11 through 2025-06-20
Codeshare flight, operated by American Airlines.(AA 4442)
Mon-Fri,Sun 22:30 Chicago O'Hare (ORD) 3 23:52 Des Moines (DSM)
AS 4509 Non-stop Embraer EMB 175 (E75) 1:22 Effective 2025-06-22 through 2025-06-30
Codeshare flight, operated by American Airlines.(AA 4442)
Thu 22:30 Chicago O'Hare (ORD) 3 23:52 Des Moines (DSM)
AS 4509 Non-stop Embraer EMB 175 (E75) 1:22 Operates only on 2025-07-03
Codeshare flight, operated by American Airlines.(AA 4442)
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4509: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4509
10:20
San Antonio (SAT)

11:39
Dallas Fort Worth (DFW)
Effective 2026-01-07 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 888)
Duration: 1:19, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4509
11:00
San Antonio (SAT)

12:17
Dallas Fort Worth (DFW)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 888)
Duration: 1:17, non-stop
Airbus A321 (321)
Alaska Airlines AS4509
13:49
Chicago O'Hare (ORD) 3

16:09
John Glenn Columbus (CMH)
Effective 2025-08-10 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3645)
Duration: 1:20, non-stop
Embraer EMB 170 / EMB 175 (E70)
Alaska Airlines AS4509
16:10
Dallas Fort Worth (DFW)

19:16
Indianapolis (IND)
Effective 2025-05-05 through 2025-05-22
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2798)
Duration: 2:06, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4509
16:10
Dallas Fort Worth (DFW)

19:16
Indianapolis (IND)
Operates only on 2025-05-23
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2798)
Duration: 2:06, non-stop
Airbus A321 (321)
Alaska Airlines AS4509
16:10
Dallas Fort Worth (DFW)

19:16
Indianapolis (IND)
Effective 2025-05-24 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2798)
Duration: 2:06, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4509
16:35
Dallas Fort Worth (DFW)

19:41
Indianapolis (IND)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2366)
Duration: 2:06, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4509
18:51
Chicago O'Hare (ORD) 3

22:00
Ronald Reagan Washington (DCA) 2
Effective 2025-11-02 through 2025-12-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 603)
Duration: 2:09, non-stop
Boeing 737 MAX 8 (7M8)
Alaska Airlines AS4509
18:56
Chicago O'Hare (ORD) 3

22:00
Ronald Reagan Washington (DCA) 2
Effective 2025-10-04 through 2025-10-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1787)
Duration: 2:04, non-stop
Airbus A319 (319)
Alaska Airlines AS4509
19:17
Chicago O'Hare (ORD) 3

22:15
Ronald Reagan Washington (DCA) 2
Effective 2025-06-05 through 2025-06-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 1787)
Duration: 1:58, non-stop
Airbus A319 (319)
Alaska Airlines AS4509
19:20
Chicago O'Hare (ORD) 3

22:15
Ronald Reagan Washington (DCA) 2
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 603)
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Alaska Airlines AS4509
19:29
Chicago O'Hare (ORD) 3

22:28
Ronald Reagan Washington (DCA) 2
Effective 2025-10-06 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1787)
Duration: 1:59, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4509
19:30
Chicago O'Hare (ORD) 3

21:28
Huntsville (HSV)
Effective 2025-09-03 through 2025-10-03
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6365)
Duration: 1:58, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4509
19:33
Chicago O'Hare (ORD) 3

22:34
Ronald Reagan Washington (DCA) 2
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 603)
Duration: 2:01, non-stop
Airbus A319 (319)
Alaska Airlines AS4509
19:47
Ronald Reagan Washington (DCA) 2

21:22
Charlotte (CLT)
Effective 2025-07-06 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5072)
Duration: 1:35, non-stop
Canadair CRJ 900 (CR9)
Alaska Airlines AS4509
19:52
Ronald Reagan Washington (DCA) 2

21:03
Pittsburgh (PIT)
Valid until 2025-05-02
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4349)
Duration: 1:11, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4509
19:59
Ronald Reagan Washington (DCA) 2

21:40
Charlotte (CLT)
Effective 2025-07-26 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 5072)
Duration: 1:41, non-stop
Canadair CRJ 900 (CR9)
Alaska Airlines AS4509
20:37
Chicago O'Hare (ORD) 3

23:50
Ronald Reagan Washington (DCA) 2
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 903)
Duration: 2:13, non-stop
Airbus A319 (319)
Alaska Airlines AS4509
20:40
Chicago O'Hare (ORD) 3

22:18
Des Moines (DSM)
Effective 2025-07-01 through 2025-07-02
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 1:38, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4509
20:40
Chicago O'Hare (ORD) 3

23:25
Detroit (DTW) E
Effective 2025-08-06 through 2025-08-08
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6291)
Duration: 1:45, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4509
22:30
Chicago O'Hare (ORD) 3

23:52
Des Moines (DSM)
Effective 2025-06-11 through 2025-06-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4509
22:30
Chicago O'Hare (ORD) 3

23:52
Des Moines (DSM)
Effective 2025-06-22 through 2025-06-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4509
22:30
Chicago O'Hare (ORD) 3

23:52
Des Moines (DSM)
Operates only on 2025-07-03
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4442)
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Des Moines (DSM)
  • Chicago O'Hare (ORD) - Detroit (DTW)
  • Chicago O'Hare (ORD) - Huntsville (HSV)
  • Chicago O'Hare (ORD) - John Glenn Columbus (CMH)
  • Chicago O'Hare (ORD) - Ronald Reagan Washington (DCA)
  • Dallas Fort Worth (DFW) - Indianapolis (IND)
  • Ronald Reagan Washington (DCA) - Charlotte (CLT)
  • Ronald Reagan Washington (DCA) - Pittsburgh (PIT)
  • San Antonio (SAT) - Dallas Fort Worth (DFW)
All Alaska Airlines flights
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