Alaska Airlines
flight
AS 6404:
Multiple routes
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-03-11 through 2026-04-01
Mon
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Tue
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Wed
Thu
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Fri
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Sun
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Codeshare flight, operated by American Airlines.
(AA 682)
Duration: 1:54, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-03-12 through 2026-04-06
Mon
Tue
Wed
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-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 682)
Duration: 1:54, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-21 through 2026-03-07
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 4120)
Duration: 0:54, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:16, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Valid until 2026-01-03
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 4539)
Duration: 1:16, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-21 through 2026-03-07
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 4120)
Duration: 1:02, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
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 4120)
Duration: 0:54, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:26, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Valid until 2026-01-03
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 4539)
Duration: 1:26, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
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
-
-
Sat
Sun
-
-
Codeshare flight, operated by American Airlines.
(AA 4120)
Duration: 1:02, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 682)
Duration: 1:56, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 682)
Duration: 1:57, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 682)
Duration: 1:55, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1957)
Duration: 1:54, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-04-11 through 2026-04-14
Mon
Tue
Wed
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-
Thu
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Fri
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-
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4548)
Duration: 1:53, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 1959)
Duration: 1:51, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-01-06 through 2026-01-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4120)
Duration: 1:47, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-01-18 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4120)
Duration: 1:47, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Operates only on 2026-02-16
Mon
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
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Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:21, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-04-07 through 2026-04-10
Mon
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Tue
Wed
Thu
Fri
Sat
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Sun
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Codeshare flight, operated by American Airlines.
(AA 4389)
Duration: 1:09, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-04-18 through 2026-05-09
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 4389)
Duration: 1:09, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-05-10 through 2026-05-18
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 4389)
Duration: 1:09, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-05-19 through 2026-05-20
Mon
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Tue
Wed
Thu
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Fri
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Sat
-
-
Sun
-
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Codeshare flight, operated by American Airlines.
(AA 4389)
Duration: 1:09, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-12 through 2026-02-20
Mon
-
-
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 4539)
Duration: 1:13, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-22 through 2026-03-02
Mon
Tue
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Wed
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-
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:13, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-12 through 2026-02-20
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 4539)
Duration: 1:31, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-02-22 through 2026-03-02
Mon
Tue
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Wed
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-
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:31, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-04-07 through 2026-04-10
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by American Airlines.
(AA 4389)
Duration: 1:19, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-04-18 through 2026-05-09
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 4389)
Duration: 1:19, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-05-10 through 2026-05-18
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 4389)
Duration: 1:19, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-05-19 through 2026-05-20
Mon
-
-
Tue
Wed
Thu
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-
Fri
-
-
Sat
-
-
Sun
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-
Codeshare flight, operated by American Airlines.
(AA 4389)
Duration: 1:19, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Operates only on 2026-02-16
Mon
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
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Codeshare flight, operated by American Airlines.
(AA 4539)
Duration: 1:30, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-01-06 through 2026-01-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4120)
Duration: 1:46, non-stop Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Alaska Airlines AS6404
Effective 2026-01-18 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.
(AA 4120)
Duration: 1:46, non-stop Embraer EMB 170 / EMB 175 (E70)
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Parallax here
This flight number is listed as serving the following routes:
- Chicago O'Hare (ORD) - Cedar Rapids (CID)
- Chicago O'Hare (ORD) - Milwaukee (MKE)
- Indianapolis (IND) - Philadelphia (PHL)
- Kansas City (MCI) - Chicago O'Hare (ORD)
- Reno (RNO) - Phoenix Sky Harbor (PHX)
- Saint Louis (STL) - Chicago O'Hare (ORD)