United Airlines
Star Alliance
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United States
Ontario International Airport
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United States
O'Hare International Airport
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Scan through all non-stop flights from Ontario to Chicago. The full flight schedule below gives an overview of all non-stop flights from ONT to ORD, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
Known for its continental climate, Chicago features hot, humid summers with temperatures above 30°C (86°F) and cold, snowy winters that often drop below 0°C (32°F). This striking seasonal contrast offers travelers a variety of activities, from summer hiking to winter sports, ensuring year-round appeal.
The best time to visit Chicago is from March to November, covering spring, summer, and fall. While summer can be hot, it also sees slightly more rainfall than other seasons.
Currently, there is only one airline operating non-stop flights from Ontario ONT to Chicago ORD, which is United Airlines. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their ONT ORD flight schedule.
Flights from ONT to ORD are operated 7 times a week, with an average of 1 flight per day. Departure times vary between 06:30 - 23:59. The earliest flight departs at 06:30, the last flight departs at 23:59. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
You can fly in Economy and Business Class. Premium Economy and First Class are not available on this route (at least not as a non-stop flight).
The fastest direct flight from Ontario to Chicago takes 4 hours and 3 minutes. The flight distance between Ontario and Chicago is 1,695 miles (or 2,728 km).
There are 2 airports in Chicago: O'Hare International Airport (ORD) and Midway International Airport (MDW).
There are 7 flights per week flying from Ontario to Chicago (as of April 2026).
4 hours and 3 minutes is the average flight time from Ontario to Chicago.
The distance from Ontario to Chicago is 1,695 miles (2,728 kilometers).
United Airlines is the only airline flying nonstop from Ontario to Chicago.
Star Alliance is currently the only alliance flying nonstop from Ontario to Chicago.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Ontario to Chicago:
The earliest flight departs at 06:30 from Ontario and arrives at 12:45 at Chicago.
The latest flight departs at 23:59 from Ontario and arrives at 06:02 at Chicago.
1,695 miles (2,728 km) · 4h 3m
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737-700
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737 MAX 8
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737-700
Y
W
J
F
07:00
12:58
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737-700
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737 MAX 8
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737-700
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2247
United Airlines
Boeing 737 MAX 8
Y
W
J
F
07:00
13:03
United Airlines
Star Alliance
UA 2226
United Airlines
Boeing 737-900
Y
W
J
F
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