Cheap flights from Illinois to Ontario from C$ 106
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Ontario departing on 29/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
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One-way
Last minute
Direct
Cheap round-trip flights
These are some of the best round-trip flight deals from Illinois to Ontario that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to Ontario.
Cheap last-minute flights
Planning a quick getaway from Illinois to Ontario? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Ontario, so you can enjoy a seamless trip without layovers.
American Airlines flights from Illinois to Region of Ontario
Our best American Airlines deals on Illinois to Region of Ontario flight tickets
American Airlines![American Airlines]()
1 Jun![American Airlines]()
4 Jun
ORD9:50 a.m.Chicago O'Hare Intl
1h 40m
YYZ12:30 p.m.Toronto Pearson Intl
YYZ6:20 p.m.Toronto Pearson Intl
1h 55m
ORD7:15 p.m.Chicago O'Hare Intl
American Airlines![American Airlines]()
10 Jun![American Airlines]()
11 Jun
ORD6:07 p.m.Chicago O'Hare Intl
14h 38m
1 stop
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
2h 35m
ORD2:05 p.m.Chicago O'Hare Intl
Delta flights from Illinois to Region of Ontario
Our best Delta deals on Illinois to Region of Ontario flight tickets
Delta![Delta]()
21 May![Delta]()
3 Jun
MDW1:55 p.m.Chicago Midway
8h 19m
1 stop
YYZ11:14 p.m.Toronto Pearson Intl
YYZ9:49 a.m.Toronto Pearson Intl
3h 39m
1 stop
MDW12:28 p.m.Chicago Midway
Delta![Delta]()
23 May![Delta]()
5 Jun
ORD9:00 a.m.Chicago O'Hare Intl
7h 15m
1 stop
YYZ5:15 p.m.Toronto Pearson Intl
YYZ3:50 p.m.Toronto Pearson Intl
3h 47m
1 stop
ORD6:37 p.m.Chicago O'Hare Intl
See travel insights to Ontario from
How to get the cheapest flight ticket from Illinois 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
Prices
Airlines
Other information
What is the cheapest month to fly to Region of Ontario?
In general, July is the cheapest month to fly from Illinois to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 388. If you are unable to visit Region of Ontario during the month of July, then departing from Illinois during the month August is also very affordable. Most momondo users find prices during this month for around C$ 391.
What is the cheapest day to depart on your flight to Region of Ontario?
The cheapest day to depart from Illinois to Region of Ontario is on a Tuesday. Travellers who choose to depart for Region of Ontario on a Tuesday will often find tickets for as low as C$ 429. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 544.
What is the cheapest time of day to depart on your flight to Region of Ontario?
Our most recent data shows that the best time of day to fly to Region of Ontario is in the afternoon. Flights from Illinois to Region of Ontario during this time can be as low as C$ 469. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 494 on average. Flights to Region of Ontario from Illinois in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Illinois to Ontario flight route?
Fly from Chicago Midway to Toronto Island for the best Illinois - 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 Illinois when booking 23 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 444 when searching 23 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Illinois for as low as C$ 257 on momondo.
What cabin class options are available on Illinois to Ontario flights?
There are 3 cabin classes available to choose from on Illinois 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 Illinois to Ontario?
Porter Airlines, Air Canada, and APG Airlines are the most popular carriers operating from Illinois to Ontario
Which airlines fly to Region of Ontario?
Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Region of Ontario from Illinois according to our data. Air Canada is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 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 Illinois to Region of Ontario on average per day?
As of May 2025, there are 86 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 6:00p.m., with 40% of flights taking off at noon.
How many flights depart from Illinois to Region of Ontario on average per week?
As of May 2025, there are 603 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Thu, with 18% of flights taking off on this day.
Cheap Illinois to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Region of Ontario
Best price found | C$ 106 |
|---|---|
Fastest flight time | 1h 35m |
Direct flights | Every day |
Airports in Region of Ontario | 2 airports |
When did momondo last update prices for flights from Illinois to Ontario?
Prices for flights from Illinois to Ontario are updated daily.
How many operators does momondo search for flights from Illinois to Ontario?
There are 3 operators available for flights from Illinois to Ontario as of May 2025.
How old do you have to be to fly from Illinois to Ontario?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Region of Ontario?
Based on momondo bookings for flights between Illinois and Region of Ontario, the leading plane model is Embraer 175 (Enhanced Winglets), making up 15.73% of the total bookings. Other popular models include De Havilland (Bombardier) DHC-8-400 Dash 8Q with 14.63%, Embraer 170 with 7.51%, and Boeing 787-10 Dreamliner with 7.45%.
Best airlines flying from Illinois to Region of Ontario
Compare and see reviews for airlines that fly from Illinois to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 182 | Free Cancellation | Rating 7.0 9,254 reviews | |||
| PriceFrom C$ 201 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom C$ 339 | Free Cancellation | Rating 8.0 285 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Ontario?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Ontario . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Illinois to Ontario with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Ontario from Illinois with this policy.
How can momondo help me find flights from Illinois to Ontario?
momondo provides multiple filters to help you find the best flight to Ontario from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Illinois to Ontario right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Illinois to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.
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