All airlines flying from Ontario, Los Angeles (ONT) to Chicago O'Hare (ORD).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon-Thu,Sun 23:59 Ontario, Los Angeles (ONT) 2 06:02 Chicago O'Hare (ORD) 1
United Airlines UA 552 Non-stop Boeing 737 MAX 8 (7M8) 4:03 Effective 2026-03-05 through 2026-03-12
The flight arrives 1 day after departure.
Fri 23:59 Ontario, Los Angeles (ONT) 2 06:02 Chicago O'Hare (ORD) 1
United Airlines UA 552 Non-stop Boeing 737-700 (73G) 4:03 Effective 2026-03-06 through 2026-03-27
The flight arrives 1 day after departure.
Sat 23:59 Ontario, Los Angeles (ONT) 2 07:02 Chicago O'Hare (ORD) 1
United Airlines UA 552 Non-stop Boeing 737 MAX 8 (7M8) 4:03 Operates only on 2026-03-07
The flight arrives 1 day after departure.
Mon-Thu,Sat,Sun 23:59 Ontario, Los Angeles (ONT) 2 06:02 Chicago O'Hare (ORD) 1
United Airlines UA 552 Non-stop Boeing 737 MAX 8 (7M8) 4:03 Effective 2026-03-14 through 2026-03-28
The flight arrives 1 day after departure.
Daily 23:59 Ontario, Los Angeles (ONT) 2 05:50 Chicago O'Hare (ORD) 1
United Airlines UA 1180 Non-stop Boeing 737-800 (738) 3:51 Valid until 2026-01-05
The flight arrives 1 day after departure.
Daily 07:00 Ontario, Los Angeles (ONT) 2 13:03 Chicago O'Hare (ORD) 1
United Airlines UA 2226 Non-stop Boeing 737-800 (738) 4:03 Effective from 2026-04-30
Daily 07:00 Ontario, Los Angeles (ONT) 2 13:03 Chicago O'Hare (ORD) 1
United Airlines UA 2247 Non-stop Boeing 737 MAX 9 (7M9) 4:03 Effective 2026-03-29 through 2026-04-29
Non-Direct Flights:
Mon,Thu,Fri,Sun 06:10 Ontario, Los Angeles (ONT) 2 23:03 Chicago O'Hare (ORD) 1
United Airlines UA 1936 2-stop Boeing 737-900 (739) 14:53 Valid until 2026-01-05
Sat 06:10 Ontario, Los Angeles (ONT) 2 23:03 Chicago O'Hare (ORD) 1
United Airlines UA 1936 2-stop Boeing 737-900 (739) 14:53 Operates only on 2026-01-03




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All airlines flying from Ontario, Los Angeles (ONT) to Chicago O'Hare (ORD).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA552
23:59
Ontario, Los Angeles (ONT) 2

06:02(+1)
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-12
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 4:03, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA552
23:59
Ontario, Los Angeles (ONT) 2

06:02(+1)
Chicago O'Hare (ORD) 1
Effective 2026-03-06 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:03, non-stop
Boeing 737-700 (73G)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA552
23:59
Ontario, Los Angeles (ONT) 2

07:02(+1)
Chicago O'Hare (ORD) 1
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:03, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA552
23:59
Ontario, Los Angeles (ONT) 2

06:02(+1)
Chicago O'Hare (ORD) 1
Effective 2026-03-14 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 4:03, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1180
23:59
Ontario, Los Angeles (ONT) 2

05:50(+1)
Chicago O'Hare (ORD) 1
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:51, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA2226
07:00
Ontario, Los Angeles (ONT) 2

13:03
Chicago O'Hare (ORD) 1
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:03, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA2247
07:00
Ontario, Los Angeles (ONT) 2

13:03
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:03, non-stop
Boeing 737 MAX 9 (7M9)
Non-Direct Flights:
United Airlines UA1936
06:10
Ontario, Los Angeles (ONT) 2

23:03
Chicago O'Hare (ORD) 1
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 14:53, 2-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA1936
06:10
Ontario, Los Angeles (ONT) 2

23:03
Chicago O'Hare (ORD) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 14:53, 2-stop
Boeing 737-900 (739)
  • A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Chicago O'Hare airport (ORD).
  • The flight distance is 1696 miles, or 2729 km.
  • The timezone of the departure airport is UTC-8 , 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 3:51 and 4:03.
Return (ORD-ONT) flights
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