Air Canada flight AC 4373: Chicago O'Hare - San Francisco

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 21:05 Chicago O'Hare (ORD) 1 00:04 San Francisco (SFO) 3
AC 4373 Non-stop Airbus A321neo (32Q) 4:59 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 2106)
The flight arrives 1 day after departure.
Daily 21:05 Chicago O'Hare (ORD) 1 00:04 San Francisco (SFO) 3
AC 4373 Non-stop Airbus A321neo (32Q) 4:59 Effective from 2026-10-25
Codeshare flight, operated by United Airlines.(UA 2106)
The flight arrives 1 day after departure.
Daily 21:15 Chicago O'Hare (ORD) 1 00:16 San Francisco (SFO) 3
AC 4373 Non-stop Boeing 737 MAX 9 (7M9) 5:01 Effective 2026-03-05 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 2106)
The flight arrives 1 day after departure.
Daily 21:20 Chicago O'Hare (ORD) 1 00:19 San Francisco (SFO) 3
AC 4373 Non-stop Airbus A321neo (32Q) 4:59 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 2106)
The flight arrives 1 day after departure.
Daily 21:39 Chicago O'Hare (ORD) 1 00:34 San Francisco (SFO) 3
AC 4373 Non-stop Airbus A321neo (32Q) 4:55 Effective 2026-05-21 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 2106)
The flight arrives 1 day after departure.
Mon,Tue,Thu-Sun 22:10 Chicago O'Hare (ORD) 1 01:14 San Francisco (SFO) 3
AC 4373 Non-stop Airbus A321neo (32Q) 5:04 Valid until 2026-01-04
Codeshare flight, operated by United Airlines.(UA 2264)
The flight arrives 1 day after departure.
Mon 22:10 Chicago O'Hare (ORD) 1 01:14 San Francisco (SFO) 3
AC 4373 Non-stop Boeing 737-900 (739) 5:04 Operates only on 2026-01-05
Codeshare flight, operated by United Airlines.(UA 2264)
The flight arrives 1 day after departure.
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Air Canada flight AC 4373:
Chicago O'Hare - San Francisco
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4373
21:05
Chicago O'Hare (ORD) 1

00:04(+1)
San Francisco (SFO) 3
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2106)
Duration: 4:59, non-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
21:05
Chicago O'Hare (ORD) 1

00:04(+1)
San Francisco (SFO) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2106)
Duration: 4:59, non-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
21:15
Chicago O'Hare (ORD) 1

00:16(+1)
San Francisco (SFO) 3
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2106)
Duration: 5:01, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
21:20
Chicago O'Hare (ORD) 1

00:19(+1)
San Francisco (SFO) 3
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2106)
Duration: 4:59, non-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
21:39
Chicago O'Hare (ORD) 1

00:34(+1)
San Francisco (SFO) 3
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2106)
Duration: 4:55, non-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
22:10
Chicago O'Hare (ORD) 1

01:14(+1)
San Francisco (SFO) 3
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2264)
Duration: 5:04, non-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air Canada AC4373
22:10
Chicago O'Hare (ORD) 1

01:14(+1)
San Francisco (SFO) 3
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2264)
Duration: 5:04, non-stop
Boeing 737-900 (739)
The flight arrives 1 day after departure.
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  • AC 4373 is a domestic flight departing from the Chicago O'Hare airport (ORD) and arriving at San Francisco airport (SFO).
  • The flight distance is 1840 miles, or 2962 km.
  • The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-8 . 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 4:55 and 5:04.
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