Unable to find information about the schedule of direct flights from
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A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to Ontario:
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Looking for affordable flights from Chicago to Ontario? Look no further! Our air ticket search website offers the best deals on flights from Chicago, United States to Ontario, United States. Whether you're planning a business trip or a weekend getaway, we've got you covered with cheap flights that won't break the bank. With a user-friendly interface and a wide range of flight options, finding the perfect airfare has never been easier. So why wait? Start your search now and book your tickets to Ontario at unbeatable prices. Don't miss out on this opportunity to save big on your next flight!
Unable to find information about the schedule of direct flights from
A non-stop flight is the most convenient and comfortable way to fly from Chicago to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
There appear to be no non-stop flights from Chicago to Ontario at this time.... Well, or something went wrong on our side and we couldn't find anything
starting at $97
starting at $137
The Chicago — Ontario route is served by multiple airlines, including Frontier Airlines and Alaska Airlines. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $97, and depending on season and promotions, even better deals may appear. With our service, you can easily compare available options and book tickets that match your plans. The variety of carriers allows flexible choices and comfortable travel without overpaying.
The cheapest one-way flight from Chicago to Ontario departs on 02/19/2026, is operated by Frontier Airlines and costs $97
The cheapest roundtrip flight from Chicago to Ontario departs on 04/05/2026, is operated by Allegiant Air and costs $364
Fastest flight from Chicago to Ontario takes 9h 8m
There are no direct flights on this route.
The distance between Chicago and Ontario is 2754km (1707 miles). There are 8 direct flights from Chicago to Ontario. The time difference between Chicago and Ontario is 2h. Flights from Chicago begin at 7:50 AM. The latest flight from Chicago departs at 11:20 AM
We couldn't find any special offers for flights from Chicago to Ontario
The cheapest flight ticket from Chicago to Ontario according to data for the last 48 hours costs $97
Often the best time to buy tickets from Chicago to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Chicago to Ontario can be found flying in these months: February, April, March.
The fastest flights from Chicago to Ontario start from 9 hours 8 minutes in the air.
The following airlines operate direct flights on the route Chicago — Ontario:
In different months, ticket prices from Chicago to Ontario vary: minimum — $93 (February 2026), maximum — $271 (June 2026). Typically, the flight costs $179–$199.
