Cheap flights from Illinois to Ontario from $90
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 2/27. 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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1 adult
Economy
0 bags
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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.
Cheap bus & train deals from Illinois to Ontario
Find recent round-trip train or bus tickets from Illinois to Ontario.
All round-trip flight deals to Ontario
The cheapest plane tickets to Ontario found on KAYAK recently.
United Airlines flights from Illinois to Region of Ontario
Our best United Airlines deals on Illinois to Region of Ontario flight tickets
United Airlines![United Airlines]()
Feb 12![United Airlines]()
Feb 12
ORD6:00 amChicago O'Hare Intl
5h 37m
1 stop
YYZ12:37 pmToronto Pearson Intl
YYZ4:30 pmToronto Pearson Intl
6h 08m
1 stop
ORD9:38 pmChicago O'Hare Intl
United Airlines![United Airlines]()
Feb 3![United Airlines]()
Feb 12
ORD12:51 pmChicago O'Hare Intl
1h 54m
YYZ3:45 pmToronto Pearson Intl
YYZ12:20 pmToronto Pearson Intl
7h 18m
1 stop
ORD6:38 pmChicago O'Hare Intl
WestJet flights from Illinois to Region of Ontario
Our best WestJet deals on Illinois to Region of Ontario flight tickets
WestJet![WestJet]()
Feb 24![WestJet]()
Feb 25
MDW1:26 pmChicago Midway
8h 41m
1 stop
YYZ11:07 pmToronto Pearson Intl
YYZ6:30 amToronto Pearson Intl
7h 12m
1 stop
MDW12:42 pmChicago Midway
WestJet![WestJet]()
Jan 22![WestJet]()
Jan 23
ORD10:05 amChicago O'Hare Intl
24h 13m
1 stop
YYZ11:18 amToronto Pearson Intl
YYZ1:20 pmToronto Pearson Intl
3h 53m
1 stop
ORD4:13 pmChicago 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?
The month of April is, on average, the cheapest month to fly to Region of Ontario from Illinois, with most prices found around $274. If you aren’t able to travel during the month of April, then book flights to Region of Ontario from Illinois during July instead. Flights to Region of Ontario in July, while not as cheap as those in April, still average around $277.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Tuesday is the cheapest day to fly to Region of Ontario from Illinois. The lowest ticket price found for a Tuesday departure recently was $292. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Illinois to Region of Ontario on a Monday will generally be more expensive and average around $311. 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 evening. momondo users have found flights departing from Illinois to Region of Ontario in the evening for as low as $278. 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 $314.
What is the cheapest Illinois to Ontario flight route?
Fly from Chicago O'Hare Intl to Toronto Pearson Intl for the best Illinois - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
The ideal time to book your flight to Region of Ontario is 47 days in advance when prices tend to average $306. 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 $143 on momondo.
What cabin class options are available on Illinois to Ontario flights?
There are 4 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, WestJet, and United Airlines are the most popular carriers operating from Illinois 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 Illinois according to our data. Air Canada is the first choice among our users, with 44% 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 Illinois to Region of Ontario on average per day?
As of January 2025, there are 75 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 6:00PM, with 36% of flights taking off in the afternoon.
How many flights depart from Illinois to Region of Ontario on average per week?
As of January 2025, there are 530 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Mon, with 16% 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 | $90 |
|---|---|
Fastest flight time | 1h 30m |
Direct flights | Every day |
Airports in Region of Ontario | 4 airports |
When did momondo last update prices for flights from Illinois to Ontario?
Prices for flights from Illinois to Ontario were last updated today.
How many operators does momondo search for flights from Illinois to Ontario?
As of January 2025, there are 5 operators available to choose from for flights from Illinois to Ontario.
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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Ontario 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 Ontario. 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 Illinois to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Region of Ontario is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 13.26% of all bookings. The subsequent popular models are Boeing 737-800 at 13.22%, Embraer 175 (Enhanced Winglets) at 12.34%, and Embraer 170 at 10.10%.
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 $122 | Free Cancellation | Rating 7.9 274 reviews | |||
| PriceFrom $122 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $122 | Free Cancellation | Rating 7.0 8,568 reviews | |||
| PriceFrom $148 | Free Cancellation | Rating 7.4 8,961 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Ontario?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Illinois.
Can I find flights from Illinois to Ontario with flexible booking policies on momondo?
Yes. All flights to Ontario from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Illinois to Ontario?
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 Illinois to Ontario.
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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