What is the cheapest airline that flies from Illinois to Ontario?

United Airlines, Porter Airlines, and Air Canada are the most popular carriers operating from Illinois to Ontario

How many flights depart from Illinois to Region of Ontario on average per week?

As of August 2025, there are 683 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

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 37% 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 long is the flight from Illinois to Region of Ontario?

Average flight duration from Illinois to Region of Ontario depends on which airport you fly into and out of. Flying from Chicago to Toronto Pearson Intl Airport is 2h 18m on average, while flying from Moline to Toronto Pearson Intl Airport is 7h 21m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

How many flights depart from Illinois to Region of Ontario on average per day?

As of August 2025, there are 97 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 8:00PM, with 38% of flights taking off at noon.

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 August 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.

$59 Cheap Flights from Illinois to Ontario in 2025

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Find the cheapest flights from Illinois to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:00 pm - 4:39 pmORD-YYZ

1h 39mnonstop

8:15 am - 9:13 amYYZ-ORD

1h 58mnonstop

$150Air Canada

Find Deal

Fri, Nov 14 - Sun, Nov 16

8:48 am - 2:14 pmORD-YYZ

4h 26m1 stop

5:30 pm - 6:39 pmYYZ-ORD

2h 09mnonstop

$153United Airlines

Find Deal

Sat, Nov 1 - Sat, Nov 1

5:20 pm - 8:02 pmMDW-YTZ

1h 42mnonstop

3:35 pm - 4:24 pmYTZ-MDW

1h 49mnonstop

$158Porter Airlines

Find Deal

Wed, Sep 3 - Mon, Sep 8

1:19 pm - 4:02 pmORD-YYZ

1h 43mnonstop

6:40 pm - 11:34 pmYYZ-ORD

5h 54m1 stop

$159United Airlines

Find Deal

Sun, Nov 2 - Sun, Nov 2

12:50 pm - 3:57 pmORD-YUL

2h 07mnonstop

9:25 am - 11:18 amYUL-ORD

2h 53mnonstop

$163Air Canada

Find Deal

Fri, Nov 14 - Sun, Nov 16

6:10 am - 11:59 amORD-YYZ

4h 49m1 stop

3:11 pm - 4:05 pmYYZ-ORD

1h 54mnonstop

$173American Airlines

Find Deal

Sat, Oct 4 - Sat, Oct 4

6:10 am - 11:59 amORD-YYZ

4h 49m1 stop

3:45 pm - 8:27 pmYYZ-ORD

5h 42m1 stop

$189American Airlines

Find Deal

Sat, Oct 4 - Sat, Oct 4

9:35 am - 12:17 pmMDW-YTZ

1h 42mnonstop

7:50 am - 8:39 amYTZ-MDW

1h 49mnonstop

$191Porter Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

5:20 pm - 8:02 pmMDW-YTZ

1h 42mnonstop

7:50 am - 8:39 amYTZ-MDW

1h 49mnonstop

$247Air Transat

Find Deal

Wed, Sep 10 - Thu, Sep 18

9:35 am - 12:17 pmMDW-YTZ

1h 42mnonstop

3:35 pm - 4:24 pmYTZ-MDW

1h 49mnonstop

$249Air Transat

Find Deal

Fri, Sep 5 - Mon, Sep 8

United Airlines flights from Illinois to Region of Ontario

Our best United Airlines deals on Illinois to Region of Ontario flight tickets

United Airlines

Nov 1

ORD8:48 amChicago O'Hare Intl

4h 26m

1 stop

YYZ2:14 pmToronto Pearson Intl

Nov 1

YYZ5:30 pmToronto Pearson Intl

2h 09m

ORD6:39 pmChicago O'Hare Intl

$153

Find similar

United Airlines

Nov 2

ORD1:19 pmChicago O'Hare Intl

1h 43m

YYZ4:02 pmToronto Pearson Intl

Nov 2

YYZ6:40 pmToronto Pearson Intl

5h 54m

1 stop

ORD11:34 pmChicago O'Hare Intl

$159

Find similar

United Airlines

Nov 7

ORD4:50 pmChicago O'Hare Intl

1h 55m

YYZ7:45 pmToronto Pearson Intl

Nov 10

YYZ5:30 pmToronto Pearson Intl

2h 09m

ORD6:39 pmChicago O'Hare Intl

$168

Find similar

Air Canada flights from Illinois to Region of Ontario

Our best Air Canada deals on Illinois to Region of Ontario flight tickets

Air Canada

Nov 14

ORD2:00 pmChicago O'Hare Intl

1h 39m

YYZ4:39 pmToronto Pearson Intl

Nov 16

YYZ8:15 amToronto Pearson Intl

1h 58m

ORD9:13 amChicago O'Hare Intl

$150

Find similar

Air Canada

Nov 14

ORD12:50 pmChicago O'Hare Intl

2h 07m

YUL3:57 pmMontreal Pierre Elliott Trudeau Intl

Nov 16

YUL9:25 amMontreal Pierre Elliott Trudeau Intl

2h 53m

ORD11:18 amChicago O'Hare Intl

$163

Find similar

Air Canada

Nov 10

ORD3:35 pmChicago O'Hare Intl

2h 05m

YUL6:40 pmMontreal Pierre Elliott Trudeau Intl

Nov 22

YUL1:10 pmMontreal Pierre Elliott Trudeau Intl

2h 45m

ORD2:55 pmChicago O'Hare Intl

$170

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 11/14

2:00 pm-4:39 pm

Nonstop1h 39m

Toronto Pearson Intl

Sun 11/16

8:15 am-9:13 am

Nonstop1h 58m

$150

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 11/1

8:48 am-2:14 pm

1 stop4h 26m

Toronto Pearson Intl

Sat 11/1

5:30 pm-6:39 pm

Nonstop2h 09m

$153

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 9/3

5:20 pm-8:02 pm

Nonstop1h 42m

Toronto Island

Mon 9/8

3:35 pm-4:24 pm

Nonstop1h 49m

$158

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 11/2

1:19 pm-4:02 pm

Nonstop1h 43m

Toronto Pearson Intl

Sun 11/2

6:40 pm-11:34 pm

1 stop5h 54m

$159

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 11/14

12:50 pm-3:57 pm

Nonstop2h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 11/16

9:25 am-11:18 am

Nonstop2h 53m

$163

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 10/4

6:10 am-11:59 am

1 stop4h 49m

Toronto Pearson Intl

Sat 10/4

3:11 pm-4:05 pm

Nonstop1h 54m

$173

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 10/4

6:10 am-11:59 am

1 stop4h 49m

Toronto Pearson Intl

Sat 10/4

3:45 pm-8:27 pm

1 stop5h 42m

$189

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 9/3

9:35 am-12:17 pm

Nonstop1h 42m

Toronto Island

Sat 9/6

7:50 am-8:39 am

Nonstop1h 49m

$191

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 9/10

5:20 pm-8:02 pm

Nonstop1h 42m

Toronto Island

Thu 9/18

7:50 am-8:39 am

Nonstop1h 49m

$247

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Fri 9/5

9:35 am-12:17 pm

Nonstop1h 42m

Toronto Island

Mon 9/8

3:35 pm-4:24 pm

Nonstop1h 49m

$249

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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 July is, on average, the cheapest month to fly to Region of Ontario from Illinois, with most prices found around $234. If you aren’t able to travel during the month of July, then book flights to Region of Ontario from Illinois during June instead. Flights to Region of Ontario in June, while not as cheap as those in July, still average around $261.

What is the cheapest day to depart on your flight to Region of Ontario?

According to our data, Thursday is the cheapest day to fly to Region of Ontario from Illinois. The lowest ticket price found for a Thursday departure recently was $622. 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 Sunday will generally be more expensive and average around $767. 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 Illinois to Region of Ontario in the morning for as low as $562. 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 $762.

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 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $305 when searching 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 $166 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.

Can stopping save me money on Illinois to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Illinois to Region of Ontario.

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	$59
Fastest flight time	1h 38m
Direct flights	Every day
Airports in Region of Ontario	3 airports

The best one-way flight to Region of Ontario from Illinois in the past 72 hours is $59. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is $150.

The fastest flight from Illinois to Region of Ontario takes 1h 38m

Direct flights go from Illinois to Region of Ontario every day.

There are 3 airports near Region of Ontario: Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ), Toronto Island (YTZ)

Search flight deals

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 August 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 19.99% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 19.02%, Embraer 175 at 12.75%, and Boeing 737-800 at 7.78%.

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
Air Canada	PriceFrom $120	Free Cancellation	Rating 7.1 9,949 reviews	Search Air Canada flights
United Airlines	PriceFrom $145	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Porter Airlines	PriceFrom $187	Free Cancellation	Rating 8.0 332 reviews	Search Porter Airlines flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

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.

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Ontario

Popular cities in Ontario

Flights to Torontofrom $93

Flights to Vancouverfrom $81

Flights to Montrealfrom $175

Flights to Calgaryfrom $136

Flights to Ottawafrom $198

Flights to Halifaxfrom $170

Flights to Winnipegfrom $180

Flights to Québec Cityfrom $153

Flights to Saskatoonfrom $129

Flights to Kelownafrom $190

Flights to St. John'sfrom $267

Flights to Reginafrom $242

Cheap flights from Illinois 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 Illinois to Ontario departing on 11/12. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Illinois to Ontario

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United Airlines flights from Illinois to Region of Ontario

Our best United Airlines deals on Illinois to Region of Ontario flight tickets

Air Canada flights from Illinois to Region of Ontario

Our best Air Canada deals on Illinois to Region of Ontario flight tickets

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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

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

What is the cheapest time of day to depart on your flight to Region of Ontario?

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?

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.

Can stopping save me money on Illinois to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Illinois to Region of Ontario.

What is the cheapest airline that flies from Illinois to Ontario?

United Airlines, Porter Airlines, and Air Canada are the most popular carriers operating from Illinois to Ontario

What airlines fly to Region of Ontario?

How many flights depart from Illinois to Region of Ontario on average per day?

As of August 2025, there are 97 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 8:00PM, with 38% of flights taking off at noon.

How many flights depart from Illinois to Region of Ontario on average per week?

As of August 2025, there are 683 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

How long is the flight from Illinois to Region of Ontario?

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

Fastest flight time

Direct flights

Airports in Region of Ontario

When did momondo last update prices for flights from Illinois to Ontario?

How many operators does momondo search for flights from Illinois to Ontario?

How old do you have to be to fly from Illinois to Ontario?

What documentation or ID do you need to fly to Ontario?

What is the most popular plane model from Illinois to Region of Ontario?

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

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ontario?

Can I find flights from Illinois to Ontario with flexible booking policies on momondo?

How can momondo help me find flights 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?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular cities in Ontario

Popular flights according to clicks in the last 7 days on momondo