Alaska Airlines flight AS 4090: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Thu,Fri 05:05 Knoxville (TYS) 06:08 Chicago O'Hare (ORD) 3
AS 4090 Non-stop Embraer ERJ 145 (ER4) 2:03 Effective 2025-05-15 through 2025-05-16
Codeshare flight, operated by American Airlines.(AA 5735)
Mon,Wed-Fri 05:05 Knoxville (TYS) 06:08 Chicago O'Hare (ORD) 3
AS 4090 Non-stop Embraer ERJ 145 (ER4) 2:03 Effective 2025-05-26 through 2025-05-30
Codeshare flight, operated by American Airlines.(AA 5735)
Mon-Fri,Sun 06:00 El Paso (ELP) 06:28 Phoenix Sky Harbor (PHX) 4
AS 4090 Non-stop Embraer EMB 175 (E75) 1:28 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 4889)
Mon-Wed,Sun 07:00 McAllen/Mission (MFE) 08:42 Dallas Fort Worth (DFW)
AS 4090 Non-stop Boeing 737-800 (738) 1:42 Effective 2025-05-11 through 2025-05-14
Codeshare flight, operated by American Airlines.(AA 2994)
Wed 07:00 Dallas Fort Worth (DFW) 08:47 Memphis (MEM)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:47 Operates only on 2025-10-01
Codeshare flight, operated by American Airlines.(AA 3580)
Sat 07:19 Chicago O'Hare (ORD) 3 10:21 Atlanta (ATL) N
AS 4090 Non-stop Embraer EMB 175 (E75) 2:02 Operates only on 2025-06-07
Codeshare flight, operated by American Airlines.(AA 4299)
Mon-Fri,Sun 09:30 Phoenix Sky Harbor (PHX) 4 11:02 El Paso (ELP)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:32 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 6357)
Daily 10:23 Wilmington (ILM) 11:47 Ronald Reagan Washington (DCA) 2
AS 4090 Non-stop Embraer EMB 175 (E75) 1:24 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 4502)
Daily 10:37 Wilmington (ILM) 11:59 Ronald Reagan Washington (DCA) 2
AS 4090 Non-stop Embraer EMB 175 (E75) 1:22 Effective 2025-09-03 through 2025-09-30
Codeshare flight, operated by American Airlines.(AA 4502)
Sun 10:40 Philadelphia (PHL) 12:39 Cincinnati (CVG)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:59 Operates only on 2025-05-25
Codeshare flight, operated by American Airlines.(AA 4541)
Sat 11:01 Atlanta (ATL) N 12:22 Chicago O'Hare (ORD) 3
AS 4090 Non-stop Embraer EMB 175 (E75) 2:21 Operates only on 2025-06-07
Codeshare flight, operated by American Airlines.(AA 4299)
Mon-Fri,Sun 11:23 Santa Ana (SNA) 16:34 Dallas Fort Worth (DFW)
AS 4090 Non-stop Boeing 737-800 (738) 3:11 Effective 2025-07-06 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 3111)
Mon-Fri,Sun 11:28 Santa Ana (SNA) 16:34 Dallas Fort Worth (DFW)
AS 4090 Non-stop Boeing 737-800 (738) 3:06 Effective 2025-06-12 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 3111)
Mon-Fri,Sun 12:38 El Paso (ELP) 14:10 Phoenix Sky Harbor (PHX) 4
AS 4090 Non-stop Embraer EMB 175 (E75) 1:32 Effective 2025-12-18 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 6357)
Daily 13:10 Chicago O'Hare (ORD) 3 15:34 Cincinnati (CVG)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:24 Effective 2025-12-03 through 2025-12-17
Codeshare flight, operated by American Airlines.(AA 4594)
Tue 13:42 Vail/Eagle (EGE) 15:10 Los Angeles (LAX)
AS 4090 Non-stop Canadair CRJ 700 (CR7) 2:28 Operates only on 2026-01-06
Codeshare flight, operated by American Airlines.(AA 4948)
Sat 14:55 Ronald Reagan Washington (DCA) 2 16:12 Chicago O'Hare (ORD) 3
AS 4090 Non-stop Boeing 737-800 (738) 2:17 Operates only on 2025-05-03
Codeshare flight, operated by American Airlines.(AA 3307)
Sat 15:58 Charleston (CHS) 17:55 Philadelphia (PHL)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:57 Effective 2025-05-10 through 2025-05-31
Codeshare flight, operated by American Airlines.(AA 4594)
Mon-Wed,Sun 15:58 Charleston (CHS) 17:55 Philadelphia (PHL)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:57 Effective 2025-06-01 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 4594)
Sat,Sun 16:55 Chicago O'Hare (ORD) 3 19:28 Buffalo (BUF)
AS 4090 Non-stop Boeing 737-800 (738) 1:33 Effective 2025-06-08 through 2025-06-14
Codeshare flight, operated by American Airlines.(AA 403)
Sat 16:55 Chicago O'Hare (ORD) 3 19:28 Buffalo (BUF)
AS 4090 Non-stop Boeing 737-800 (738) 1:33 Effective 2025-06-21 through 2025-06-28
Codeshare flight, operated by American Airlines.(AA 403)
Daily 17:15 Dulles, Washington (IAD) 20:00 Dallas Fort Worth (DFW)
AS 4090 Non-stop Boeing 737-800 (738) 3:45 Effective from 2026-02-11
Codeshare flight, operated by American Airlines.(AA 2414)
Sat 17:57 Chicago O'Hare (ORD) 3 20:35 Buffalo (BUF)
AS 4090 Non-stop Airbus A319 (319) 1:38 Effective 2025-07-05 through 2025-08-02
Codeshare flight, operated by American Airlines.(AA 403)
Daily 18:30 Los Angeles (LAX) 23:51 Omaha (OMA)
AS 4090 Non-stop Embraer EMB 175 (E75) 3:21 Effective 2025-10-06 through 2025-11-29
Codeshare flight, operated by American Airlines.(AA 6412)
Sat 18:30 Los Angeles (LAX) 23:51 Omaha (OMA)
AS 4090 Non-stop Embraer EMB 175 (E75) 3:21 Effective 2025-12-20 through 2026-02-07
Codeshare flight, operated by American Airlines.(AA 6412)
Mon,Tue,Sun 20:20 Chicago O'Hare (ORD) 3 21:21 Milwaukee (MKE)
AS 4090 Non-stop Canadair CRJ 700 (CR7) 1:01 Effective 2025-11-30 through 2025-12-02
Codeshare flight, operated by American Airlines.(AA 6366)
Mon-Fri 22:00 Ronald Reagan Washington (DCA) 2 23:27 John Glenn Columbus (CMH)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:27 Effective 2025-06-05 through 2025-06-11
Codeshare flight, operated by American Airlines.(AA 4131)
Mon-Fri 22:16 Ronald Reagan Washington (DCA) 2 23:51 Providence (PVD)
AS 4090 Non-stop Airbus A319 (319) 1:35 Effective 2025-05-05 through 2025-05-09
Codeshare flight, operated by American Airlines.(AA 2076)
Sun 22:30 Chicago O'Hare (ORD) 3 23:44 Cedar Rapids (CID)
AS 4090 Non-stop Embraer EMB 175 (E75) 1:14 Operates only on 2025-05-18
Codeshare flight, operated by American Airlines.(AA 3753)
Thu-Sun 22:30 Dallas Fort Worth (DFW) 00:07 Memphis (MEM)
AS 4090 Non-stop Boeing 737-800 (738) 1:37 Effective 2025-10-02 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 2969)
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 4090: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4090
05:05
Knoxville (TYS)

06:08
Chicago O'Hare (ORD) 3
Effective 2025-05-15 through 2025-05-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 5735)
Duration: 2:03, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4090
05:05
Knoxville (TYS)

06:08
Chicago O'Hare (ORD) 3
Effective 2025-05-26 through 2025-05-30
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 5735)
Duration: 2:03, non-stop
Embraer ERJ 145 (ER4)
Alaska Airlines AS4090
06:00
El Paso (ELP)

06:28
Phoenix Sky Harbor (PHX) 4
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4889)
Duration: 1:28, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
07:00
McAllen/Mission (MFE)

08:42
Dallas Fort Worth (DFW)
Effective 2025-05-11 through 2025-05-14
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2994)
Duration: 1:42, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
07:00
Dallas Fort Worth (DFW)

08:47
Memphis (MEM)
Operates only on 2025-10-01
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3580)
Duration: 1:47, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
07:19
Chicago O'Hare (ORD) 3

10:21
Atlanta (ATL) N
Operates only on 2025-06-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4299)
Duration: 2:02, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
09:30
Phoenix Sky Harbor (PHX) 4

11:02
El Paso (ELP)
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6357)
Duration: 1:32, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
10:23
Wilmington (ILM)

11:47
Ronald Reagan Washington (DCA) 2
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4502)
Duration: 1:24, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
10:37
Wilmington (ILM)

11:59
Ronald Reagan Washington (DCA) 2
Effective 2025-09-03 through 2025-09-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4502)
Duration: 1:22, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
10:40
Philadelphia (PHL)

12:39
Cincinnati (CVG)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4541)
Duration: 1:59, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
11:01
Atlanta (ATL) N

12:22
Chicago O'Hare (ORD) 3
Operates only on 2025-06-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4299)
Duration: 2:21, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
11:23
Santa Ana (SNA)

16:34
Dallas Fort Worth (DFW)
Effective 2025-07-06 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3111)
Duration: 3:11, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
11:28
Santa Ana (SNA)

16:34
Dallas Fort Worth (DFW)
Effective 2025-06-12 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3111)
Duration: 3:06, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
12:38
El Paso (ELP)

14:10
Phoenix Sky Harbor (PHX) 4
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6357)
Duration: 1:32, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
13:10
Chicago O'Hare (ORD) 3

15:34
Cincinnati (CVG)
Effective 2025-12-03 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4594)
Duration: 1:24, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
13:42
Vail/Eagle (EGE)

15:10
Los Angeles (LAX)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4948)
Duration: 2:28, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4090
14:55
Ronald Reagan Washington (DCA) 2

16:12
Chicago O'Hare (ORD) 3
Operates only on 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3307)
Duration: 2:17, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
15:58
Charleston (CHS)

17:55
Philadelphia (PHL)
Effective 2025-05-10 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4594)
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
15:58
Charleston (CHS)

17:55
Philadelphia (PHL)
Effective 2025-06-01 through 2025-06-04
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4594)
Duration: 1:57, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
16:55
Chicago O'Hare (ORD) 3

19:28
Buffalo (BUF)
Effective 2025-06-08 through 2025-06-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 403)
Duration: 1:33, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
16:55
Chicago O'Hare (ORD) 3

19:28
Buffalo (BUF)
Effective 2025-06-21 through 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 403)
Duration: 1:33, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
17:15
Dulles, Washington (IAD)

20:00
Dallas Fort Worth (DFW)
Effective from 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2414)
Duration: 3:45, non-stop
Boeing 737-800 (738)
Alaska Airlines AS4090
17:57
Chicago O'Hare (ORD) 3

20:35
Buffalo (BUF)
Effective 2025-07-05 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 403)
Duration: 1:38, non-stop
Airbus A319 (319)
Alaska Airlines AS4090
18:30
Los Angeles (LAX)

23:51
Omaha (OMA)
Effective 2025-10-06 through 2025-11-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 6412)
Duration: 3:21, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
18:30
Los Angeles (LAX)

23:51
Omaha (OMA)
Effective 2025-12-20 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 6412)
Duration: 3:21, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
20:20
Chicago O'Hare (ORD) 3

21:21
Milwaukee (MKE)
Effective 2025-11-30 through 2025-12-02
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 6366)
Duration: 1:01, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS4090
22:00
Ronald Reagan Washington (DCA) 2

23:27
John Glenn Columbus (CMH)
Effective 2025-06-05 through 2025-06-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4131)
Duration: 1:27, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
22:16
Ronald Reagan Washington (DCA) 2

23:51
Providence (PVD)
Effective 2025-05-05 through 2025-05-09
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2076)
Duration: 1:35, non-stop
Airbus A319 (319)
Alaska Airlines AS4090
22:30
Chicago O'Hare (ORD) 3

23:44
Cedar Rapids (CID)
Operates only on 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3753)
Duration: 1:14, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4090
22:30
Dallas Fort Worth (DFW)

00:07(+1)
Memphis (MEM)
Effective 2025-10-02 through 2025-10-05
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2969)
Duration: 1:37, 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:
  • Charleston (CHS) - Philadelphia (PHL)
  • Chicago O'Hare (ORD) - Atlanta (ATL)
  • Chicago O'Hare (ORD) - Buffalo (BUF)
  • Chicago O'Hare (ORD) - Cedar Rapids (CID)
  • Chicago O'Hare (ORD) - Cincinnati (CVG)
  • Chicago O'Hare (ORD) - Milwaukee (MKE)
  • Dallas Fort Worth (DFW) - Memphis (MEM)
  • Dulles, Washington (IAD) - Dallas Fort Worth (DFW)
  • El Paso (ELP) - Phoenix Sky Harbor (PHX)
  • Knoxville (TYS) - Chicago O'Hare (ORD)
  • Los Angeles (LAX) - Omaha (OMA)
  • McAllen/Mission (MFE) - Dallas Fort Worth (DFW)
  • Philadelphia (PHL) - Cincinnati (CVG)
  • Ronald Reagan Washington (DCA) - Chicago O'Hare (ORD)
  • Ronald Reagan Washington (DCA) - John Glenn Columbus (CMH)
  • Ronald Reagan Washington (DCA) - Providence (PVD)
  • Santa Ana (SNA) - Dallas Fort Worth (DFW)
  • Vail/Eagle (EGE) - Los Angeles (LAX)
  • Wilmington (ILM) - Ronald Reagan Washington (DCA)
All Alaska Airlines flights
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