Alaska Airlines flight AS 4556: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Sun 12:51 Chicago O'Hare (ORD) 3 15:59 White Plains (HPN)
AS 4556 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:08 Operates only on 2026-01-18
Codeshare flight, operated by American Airlines.(AA 4200)
Mon,Fri-Sun 14:13 Chicago O'Hare (ORD) 3 17:26 White Plains (HPN)
AS 4556 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:13 Effective 2026-01-02 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 4179)
Tue-Thu,Sat 16:59 Ronald Reagan Washington (DCA) 2 18:23 Greensboro/High Point (GSO)
AS 4556 Non-stop Canadair CRJ 700 (CR7) 1:24 Effective 2026-01-06 through 2026-01-10
Codeshare flight, operated by American Airlines.(AA 5519)
Sat 16:59 Ronald Reagan Washington (DCA) 2 18:23 Greensboro/High Point (GSO)
AS 4556 Non-stop Canadair CRJ 700 (CR7) 1:24 Effective 2026-01-17 through 2026-01-31
Codeshare flight, operated by American Airlines.(AA 5519)
Mon-Thu,Sat,Sun 16:59 Ronald Reagan Washington (DCA) 2 18:23 Greensboro/High Point (GSO)
AS 4556 Non-stop Canadair CRJ 700 (CR7) 1:24 Effective 2026-02-01 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 5519)
Fri 17:04 Ronald Reagan Washington (DCA) 2 18:28 Greensboro/High Point (GSO)
AS 4556 Non-stop Canadair CRJ 700 (CR7) 1:24 Effective 2026-01-09 through 2026-02-06
Codeshare flight, operated by American Airlines.(AA 5519)
Mon,Fri-Sun 17:56 White Plains (HPN) 19:43 Chicago O'Hare (ORD) 3
AS 4556 Non-stop Embraer EMB 170 / EMB 175 (E70) 2:47 Effective 2026-01-02 through 2026-01-05
Codeshare flight, operated by American Airlines.(AA 4179)
Sat 19:54 Ronald Reagan Washington (DCA) 2 21:26 Greensboro/High Point (GSO)
AS 4556 Non-stop Embraer EMB 175 (E75) 1:32 Effective 2026-02-14 through 2026-03-07
Codeshare flight, operated by American Airlines.(AA 4338)
Daily 20:20 Chicago O'Hare (ORD) 3 23:19 Missoula (MSO)
AS 4556 Non-stop Embraer EMB 175 (E75) 3:59 Effective 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 3898)
Daily 20:20 Chicago O'Hare (ORD) 3 23:15 Missoula (MSO)
AS 4556 Non-stop Embraer EMB 175 (E75) 3:55 Effective 2026-07-02 through 2026-08-04
Codeshare flight, operated by American Airlines.(AA 3898)
Daily 20:40 Chicago O'Hare (ORD) 3 23:28 Missoula (MSO)
AS 4556 Non-stop Embraer EMB 175 (E75) 3:48 Effective 2026-08-05 through 2026-09-08
Codeshare flight, operated by American Airlines.(AA 3848)
Daily 21:13 Ronald Reagan Washington (DCA) 2 22:21 Greensboro/High Point (GSO)
AS 4556 Non-stop Canadair CRJ 700 (CR7) 1:08 Effective 2026-04-07 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 5111)
Mon-Thu,Sun 22:10 Ronald Reagan Washington (DCA) 2 23:28 Greensboro/High Point (GSO)
AS 4556 Non-stop Embraer EMB 175 (E75) 1:18 Effective 2026-03-22 through 2026-04-02
Codeshare flight, operated by American Airlines.(AA 4759)
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This flight number is listed as serving the following routes:


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Alaska Airlines flight AS 4556: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4556
12:51
Chicago O'Hare (ORD) 3

15:59
White Plains (HPN)
Operates only on 2026-01-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4200)
Duration: 2:08, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS4556
14:13
Chicago O'Hare (ORD) 3

17:26
White Plains (HPN)
Effective 2026-01-02 through 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4179)
Duration: 2:13, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS4556
16:59
Ronald Reagan Washington (DCA) 2

18:23
Greensboro/High Point (GSO)
Effective 2026-01-06 through 2026-01-10
Mon
-
Tue
Wed
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 5519)
Duration: 1:24, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4556
16:59
Ronald Reagan Washington (DCA) 2

18:23
Greensboro/High Point (GSO)
Effective 2026-01-17 through 2026-01-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 5519)
Duration: 1:24, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4556
16:59
Ronald Reagan Washington (DCA) 2

18:23
Greensboro/High Point (GSO)
Effective 2026-02-01 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5519)
Duration: 1:24, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4556
17:04
Ronald Reagan Washington (DCA) 2

18:28
Greensboro/High Point (GSO)
Effective 2026-01-09 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 5519)
Duration: 1:24, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4556
17:56
White Plains (HPN)

19:43
Chicago O'Hare (ORD) 3
Effective 2026-01-02 through 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4179)
Duration: 2:47, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS4556
19:54
Ronald Reagan Washington (DCA) 2

21:26
Greensboro/High Point (GSO)
Effective 2026-02-14 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4338)
Duration: 1:32, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS4556
20:20
Chicago O'Hare (ORD) 3

23:19
Missoula (MSO)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3898)
Duration: 3:59, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS4556
20:20
Chicago O'Hare (ORD) 3

23:15
Missoula (MSO)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3898)
Duration: 3:55, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS4556
20:40
Chicago O'Hare (ORD) 3

23:28
Missoula (MSO)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3848)
Duration: 3:48, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS4556
21:13
Ronald Reagan Washington (DCA) 2

22:21
Greensboro/High Point (GSO)
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5111)
Duration: 1:08, non-stop
Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4556
22:10
Ronald Reagan Washington (DCA) 2

23:28
Greensboro/High Point (GSO)
Effective 2026-03-22 through 2026-04-02
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4759)
Duration: 1:18, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Missoula (MSO)
  • Chicago O'Hare (ORD) - White Plains (HPN)
  • Ronald Reagan Washington (DCA) - Greensboro/High Point (GSO)
All Alaska Airlines flights
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