Direct flights from Chicago to Ontario
All flights from ORD to ONT non-stop. There are direct flights from Chicago O Hare International, Illinois, USA to Ontario International Airport (ONT), California, USA every day of the week with United Airlines. The flight distance is 1706 miles and the trip usually takes about 4 hours and 31 minutes.
Airlines with non-stop routes:

United Airlines

Frontier Airlines
No flights anymore

American Airlines
No flights anymore
Flight schedule from Chicago to Ontario with United Airlines
This is a weekly direct flight schedule for United Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2025-04-22
Chicago to Ontario flight departures
Select a date to see all scheduled flight departures between ORD to ONT.
ORD - ONT information
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Distance1706 miles (2745 km)
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Flight time4 hours and 31 minutes
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Airlines
United
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AlliancesOne WorldSky TeamStar Alliance
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ClassesEconomyBusinessFirst Class
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United AircraftsAirbus A318 / A319 / A320 / A321Boeing 737 Passenger
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Departure TerminalTerminal 1 (United)
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Arrival TerminalTerminal 2 (United)
Direct flights from Chicago to CA, USA

From Chicago to San Francisco
SFO San Francisco International

From Chicago to Sacramento
SMF Sacramento International

From Chicago to San Jose
SJC Norman Y Mineta San Jose International

From Chicago to Fresno
FAT Fresno Yosemite International

From Chicago to Los Angeles
LAX Los Angeles International

From Chicago to Santa Ana
SNA John Wayne Arpt Orange Co

From Chicago to Palm Springs
PSP Palm Springs International

From Chicago to San Diego
SAN San Diego International Airport