Cheap flights from Chicago to Ontario from $59
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ontario departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Chicago to Region of Ontario
Our best United Airlines deals on Chicago to Region of Ontario flight tickets
Air Canada flights from Chicago to Region of Ontario
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How to get the cheapest flight ticket from Chicago to Region of Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Region of Ontario?
The month of July is, on average, the cheapest month to fly to Region of Ontario from Chicago, with most prices found around $268. If you aren’t able to travel during the month of July, then book flights to Region of Ontario from Chicago during April instead. Flights to Region of Ontario in April, while not as cheap as those in July, still average around $271.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Friday is the cheapest day to fly to Region of Ontario from Chicago. The lowest ticket price found for a Friday departure recently was $627. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Chicago to Region of Ontario on a Sunday will generally be more expensive and average around $772. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Region of Ontario?
According to our data, the cheapest time of day to fly to Region of Ontario is in the morning. momondo users have found flights departing from Chicago to Region of Ontario in the morning for as low as $568. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $764.
What is the cheapest Chicago to Ontario flight route?
Fly from Chicago Midway to Toronto Island for the best Chicago - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
You are more likely to see cheaper flights to Region of Ontario from Chicago when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $318 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Chicago for as low as $166 on momondo.
What cabin class options are available on Chicago to Ontario flights?
There are 4 cabin classes available to choose from on Chicago to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Chicago to Ontario?
Air Canada, United Airlines, and Porter Airlines are the most popular carriers operating from Chicago to Ontario
What airlines fly to Region of Ontario?
Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Region of Ontario from Chicago according to our data. Air Canada is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 4 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to Region of Ontario on average per day?
As of June 2025, 95 flights take off from Chicago and land in Region of Ontario each day. The most common flight departure time for this route is 10:00AM, with 39% of daily flights taking off at noon.
How many flights depart from Chicago to Region of Ontario on average per week?
665 flights are operational weekly from Chicago to Region of Ontario as of June 2025. The most popular departure day for this route is Thu, with 16% of flights per week taking off on this day.
Cheap Chicago to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Region of Ontario
Best Price Found | $59 |
|---|---|
Fastest flight time | 1h 35m |
Direct flights | Every day |
Airports in Region of Ontario | 3 airports |
When did momondo last update prices for flights from Chicago to Ontario?
Prices for flights from Chicago to Ontario refresh daily.
How many operators does momondo search for flights from Chicago to Ontario?
There are 4 operators available for flights from Chicago to Ontario as of June 2025.
How old do you have to be to fly from Chicago to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Region of Ontario?
Based on momondo bookings for flights between Chicago and Region of Ontario, the leading plane model is De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 19.04% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 18.55%, Embraer 175 with 6.61%, and Airbus A220-300 with 6.19%.
Best airlines flying from Chicago to Region of Ontario
Compare and see reviews for airlines that fly from Chicago to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $109 | Free Cancellation | Rating 8.0 288 reviews | |||
| PriceFrom $117 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $136 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $162 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Ontario?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Ontario. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Chicago to Ontario with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Chicago to Ontario flights to just show those with flexible booking policies.
How can momondo help me find flights from Chicago to Ontario?
momondo helps you find the best flight between Chicago and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Chicago to Ontario right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.