Air Canada flight AC 4557: Boise - Chicago O'Hare

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 07:42 Boise (BOI) 12:32 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:50 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 5386)
Mon,Wed-Sun 07:47 Boise (BOI) 12:32 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:45 Effective 2026-03-05 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 5386)
Tue 07:47 Boise (BOI) 12:31 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:44 Effective 2026-03-10 through 2026-03-24
Codeshare flight, operated by United Airlines.(UA 5386)
Daily 08:05 Boise (BOI) 12:50 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:45 Effective 2026-02-13 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 5386)
Daily 08:15 Boise (BOI) 13:03 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:48 Effective 2026-01-06 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 5386)
Daily 08:20 Boise (BOI) 13:08 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:48 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 5386)
Daily 08:40 Boise (BOI) 13:11 Chicago O'Hare (ORD) 1
AC 4557 Non-stop Boeing 737-700 (73G) 3:31 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 1105)
Daily 08:40 Boise (BOI) 13:11 Chicago O'Hare (ORD) 2
AC 4557 Non-stop Embraer EMB 175 (E7W) 3:31 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 5386)


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Air Canada flight AC 4557:
Boise - Chicago O'Hare
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4557
07:42
Boise (BOI)

12:32
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:50, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
07:47
Boise (BOI)

12:32
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:45, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
07:47
Boise (BOI)

12:31
Chicago O'Hare (ORD) 2
Effective 2026-03-10 through 2026-03-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:44, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
08:05
Boise (BOI)

12:50
Chicago O'Hare (ORD) 2
Effective 2026-02-13 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:45, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
08:15
Boise (BOI)

13:03
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:48, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
08:20
Boise (BOI)

13:08
Chicago O'Hare (ORD) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:48, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC4557
08:40
Boise (BOI)

13:11
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1105)
Duration: 3:31, non-stop
Boeing 737-700 (73G)
Direct Codeshare Flights:
Air Canada AC4557
08:40
Boise (BOI)

13:11
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5386)
Duration: 3:31, non-stop
Embraer EMB 175 (E7W)
  • AC 4557 is a domestic flight departing from the Boise airport (BOI) and arriving at Chicago O'Hare airport (ORD).
  • The flight distance is 1433 miles, or 2305 km.
  • The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-6 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 3:31 and 3:50.
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