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O'Hare International Airport
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United States
Ontario International Airport
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Scan through all non-stop flights from Chicago to Ontario. The full flight schedule below gives an overview of all non-stop flights from ORD to ONT, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
In Ontario, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.
Ontario is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.
Currently, there is only one airline operating non-stop flights from Chicago ORD to Ontario ONT, 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 ORD ONT flight schedule.
Flights from ORD to ONT are operated 7 times a week, with an average of 1 flight per day. Departure times vary between 15:35 - 20:18. The earliest flight departs at 15:35, the last flight departs at 20:18. 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 Chicago to Ontario takes 4 hours and 29 minutes. The flight distance between Chicago and Ontario is 1,695 miles (or 2,728 km).
There is 1 airport in Ontario: Ontario International Airport (ONT).
There are 7 flights per week flying from Chicago to Ontario (as of April 2026).
4 hours and 29 minutes is the average flight time from Chicago to Ontario.
The distance from Chicago to Ontario is 1,695 miles (2,728 kilometers).
United Airlines is the only airline flying nonstop from Chicago to Ontario.
Star Alliance is currently the only alliance flying nonstop from Chicago to Ontario.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Chicago to Ontario:
The earliest flight departs at 15:35 from Chicago and arrives at 18:01 at Ontario.
The latest flight departs at 20:18 from Chicago and arrives at 22:51 at Ontario.
1,695 miles (2,728 km) · 4h 29m
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737-700
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737 MAX 8
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737-700
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737 MAX 8
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737-700
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737 MAX 8
Y
W
J
F
20:05
22:31
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737-900
Y
W
J
F
20:09
22:35
United Airlines
Star Alliance
UA 658
United Airlines
Boeing 737-900
Y
W
J
F
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