Alaska Airlines
flight
AS 4251:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 6298)
Duration: 1:32, non-stop Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4976)
Duration: 1:28, non-stop Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4251
Operates only on 2026-02-14
Mon
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Tue
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Wed
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Fri
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 2:59, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-01-10 through 2026-02-07
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:08, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 6298)
Duration: 1:39, non-stop Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4976)
Duration: 1:36, non-stop Canadair CRJ 700 (CR7)
Direct Codeshare Flights:
Alaska Airlines AS4251
Valid until 2026-01-04
Mon
Tue
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Wed
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Thu
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Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:06, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 2:59, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-02-12 through 2026-02-13
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1831)
Duration: 2:59, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-03-05 through 2026-03-06
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1831)
Duration: 2:59, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Operates only on 2026-02-14
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:30, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-01-10 through 2026-02-07
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:28, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4251
Operates only on 2026-02-15
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:30, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-02-17 through 2026-03-04
Mon
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Tue
Wed
Thu
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Fri
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Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:30, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Valid until 2026-01-04
Mon
Tue
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Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:23, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:17, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-02-12 through 2026-02-13
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1831)
Duration: 3:27, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-03-05 through 2026-03-06
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 1831)
Duration: 3:27, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1398)
Duration: 3:11, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
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Sat
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Sun
Codeshare flight, operated by American Airlines.
(AA 3343)
Duration: 1:50, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-01-09 through 2026-02-06
Mon
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Tue
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Wed
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Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 3343)
Duration: 1:50, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS4251
Effective 2026-05-21 through 2026-08-04
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)
- Dallas Fort Worth (DFW) - Nashville (BNA)
- Lexington (LEX) - Chicago O'Hare (ORD)
- West Palm Beach (PBI) - Chicago O'Hare (ORD)