Cheap flights from Ontario to Chicago from $99
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Chicago departing on 7/31. 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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American Airlines flights from Region of Ontario to Chicago
Our best American Airlines deals on Region of Ontario to Chicago flight tickets
WestJet flights from Region of Ontario to Chicago
Our best WestJet deals on Region of Ontario to Chicago flight tickets
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How to get the cheapest flight ticket from Region of Ontario to Chicago
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 Chicago?
The month of April is, on average, the cheapest month to fly to Chicago from Region of Ontario, with most prices found around $235. If you’re not able to fly to Chicago in April, then May is your next best option. Flight prices from Region of Ontario to Chicago during May average around $244.
What is the cheapest day to depart on your flight to Chicago?
The cheapest day to depart on your flight to Chicago is on a Friday when prices can be found for as low as $385. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Chicago for around $616.
What is the cheapest time of day to depart on your flight to Chicago?
Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from Region of Ontario to Chicago during this time can be as low as $335. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $569.
What is the cheapest Ontario to Chicago flight route?
Fly from Toronto Island to Chicago Midway for the best Ontario - Chicago flight prices
How far in advance should I book a flight to Chicago?
You are more likely to see cheaper flights to Chicago from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $295 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Region of Ontario for as low as $247 on momondo.
What cabin class options are available on Ontario to Chicago flights?
There are 4 cabin classes available to choose from on Ontario to Chicago 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 Ontario to Chicago?
Porter Airlines, Air Canada, and American Airlines are the most popular carriers operating from Ontario to Chicago
What airlines fly to Chicago?
Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to Chicago from Region of Ontario according to our data. Air Canada is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 4 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.
How many flights depart from Region of Ontario to Chicago on average per day?
The number of flights available between Region of Ontario and Chicago is 96 per day as of June 2025. The most frequent departure time is 6:00AM, with 43% of daily flights leaving at noon.
How many flights depart from Region of Ontario to Chicago on average per week?
As of June 2025, 677 flights take off from Region of Ontario and land in Chicago each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.
Cheap Region of Ontario to Chicago flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago
Best Price Found | $99 |
|---|---|
Fastest flight time | 1h 49m |
Direct flights | Tue, Wed, Thu, Fri, Sat and Sun |
Airports in Chicago | 2 airports |
When did momondo last update prices for flights from Ontario to Chicago?
Prices for flights from Ontario to Chicago are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario to Chicago?
The number of operators available for flights from Ontario to Chicago is 5 as of June 2025.
How old do you have to be to fly from Ontario to Chicago?
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 Ontario to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Region of Ontario to Chicago?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Region of Ontario to Chicago is De Havilland (Bombardier) DHC-8-400 Dash 8Q (19.84% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (15.87%), Boeing 737-800 (12.73%), and Airbus A220-300 (8.90%).
Best airlines flying from Region of Ontario to Chicago
Compare and see reviews for airlines that fly from Region of Ontario to Chicago with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $162 | Free Cancellation | Rating 7.1 9,572 reviews | |||
| PriceFrom $165 | Free Cancellation | Rating 7.4 8,810 reviews | |||
| PriceFrom $169 | Free Cancellation | Rating 8.0 289 reviews | |||
| PriceFrom $211 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ontario to Chicago?
It is quick and easy to find Ontario to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.
Can I find flights from Ontario to Chicago with flexible booking policies on momondo?
Flights from Ontario to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Ontario to Chicago?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Chicago.
I’m not ready to book a flight from Ontario to Chicago right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Chicago from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.