What airlines fly to Region of Ontario?

United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to Region of Ontario from Illinois according to our data. United Airlines is the first choice among our users, with 38% 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 October 2025, there are 103 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 6:00PM, with 39% of flights taking off at noon.

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

American Airlines, Delta, and Porter Airlines 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 October 2025, there are 722 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

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 28m on average, while flying from Moline to Toronto Pearson Intl Airport is 4h 20m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

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 October 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.

$86 Cheap Flights from Illinois to Ontario in 2025/26

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Find the cheapest flights from Illinois to Ontario

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:16 pm - 9:21 pmORD-YYZ

2h 05mnonstop

9:00 pm - 10:05 pmYYZ-ORD

2h 05mnonstop

$178United Airlines

Find Deal

Thu, Jan 1 - Sat, Jan 10

8:15 pm - 10:54 pmORD-YYZ

1h 39mnonstop

2:15 pm - 3:10 pmYYZ-ORD

1h 55mnonstop

$187Air Canada

Find Deal

Sun, Jan 4 - Wed, Jan 7

9:53 am - 4:50 pmORD-YYZ

5h 57m1 stop

1:05 pm - 2:05 pmYYZ-ORD

2h 00mnonstop

$194American Airlines

Find Deal

Thu, Feb 19 - Tue, Feb 24

2:00 pm - 4:39 pmORD-YYZ

1h 39mnonstop

4:05 pm - 8:15 pmYYZ-ORD

5h 10m1 stop

$199Multiple Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

11:49 am - 3:07 pmORD-YUL

2h 18mnonstop

12:59 pm - 9:04 amYUL-ORD

21h 05m1 stop

$203American Airlines

Find Deal

Thu, Jan 8 - Mon, Jan 12

7:15 am - 1:40 pmORD-YYZ

5h 25m1 stop

12:05 pm - 1:01 pmYYZ-ORD

1h 56mnonstop

$207Air Canada

Find Deal

Mon, Feb 2 - Mon, Feb 9

12:45 pm - 3:27 pmMDW-YTZ

1h 42mnonstop

2:30 pm - 3:20 pmYTZ-MDW

1h 50mnonstop

$216Porter Airlines

Find Deal

Sat, Mar 28 - Fri, Apr 3

11:00 am - 1:42 pmMDW-YTZ

1h 42mnonstop

2:30 pm - 3:20 pmYTZ-MDW

1h 50mnonstop

$218Porter Airlines

Find Deal

Fri, Mar 27 - Fri, Apr 3

6:16 pm - 9:21 pmORD-YYZ

2h 05mnonstop

9:00 pm - 10:05 pmYYZ-ORD

2h 05mnonstop

$225United Airlines

Find Deal

Mon, Dec 29 - Sat, Jan 3

11:00 am - 1:42 pmMDW-YTZ

1h 42mnonstop

2:30 pm - 3:20 pmYTZ-MDW

1h 50mnonstop

$274Air Transat

Find Deal

Tue, Dec 23 - Sat, Jan 3

United Airlines flights from Illinois to Region of Ontario

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

United Airlines

Jan 1

ORD6:16 pmChicago O'Hare Intl

2h 05m

YYZ9:21 pmToronto Pearson Intl

Jan 10

YYZ9:00 pmToronto Pearson Intl

2h 05m

ORD10:05 pmChicago O'Hare Intl

$178

Find similar

United Airlines

Dec 29

ORD6:16 pmChicago O'Hare Intl

2h 05m

YYZ9:21 pmToronto Pearson Intl

Jan 3

YYZ9:00 pmToronto Pearson Intl

2h 05m

ORD10:05 pmChicago O'Hare Intl

$225

Find similar

United Airlines

Jan 1

ORD7:10 amChicago O'Hare Intl

1h 48m

YYZ9:58 amToronto Pearson Intl

Jan 10

YYZ10:00 amToronto Pearson Intl

5h 25m

1 stop

ORD2:25 pmChicago O'Hare Intl

$241

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

Jan 4

ORD8:15 pmChicago O'Hare Intl

1h 39m

YYZ10:54 pmToronto Pearson Intl

Jan 7

YYZ2:15 pmToronto Pearson Intl

1h 55m

ORD3:10 pmChicago O'Hare Intl

$187

Find similar

Air Canada

Feb 2

ORD7:15 amChicago O'Hare Intl

5h 25m

1 stop

YYZ1:40 pmToronto Pearson Intl

Feb 9

YYZ12:05 pmToronto Pearson Intl

1h 56m

ORD1:01 pmChicago O'Hare Intl

$207

Find similar

Air Canada

Jan 23

ORD7:15 amChicago O'Hare Intl

2h 05m

YUL10:20 amMontreal Pierre Elliott Trudeau Intl

Feb 1

YUL7:00 amMontreal Pierre Elliott Trudeau Intl

7h 01m

1 stop

ORD1:01 pmChicago O'Hare Intl

$209

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 1/1

6:16 pm-9:21 pm

Nonstop2h 05m

Toronto Pearson Intl

Sat 1/10

9:00 pm-10:05 pm

Nonstop2h 05m

$178

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 1/4

8:15 pm-10:54 pm

Nonstop1h 39m

Toronto Pearson Intl

Wed 1/7

2:15 pm-3:10 pm

Nonstop1h 55m

$187

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 2/19

9:53 am-4:50 pm

1 stop5h 57m

Toronto Pearson Intl

Tue 2/24

1:05 pm-2:05 pm

Nonstop2h 00m

$194

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 1/8

2:00 pm-4:39 pm

Nonstop1h 39m

Toronto Pearson Intl

Sun 1/11

4:05 pm-8:15 pm

1 stop5h 10m

$199

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 1/8

11:49 am-3:07 pm

Nonstop2h 18m

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

12:59 pm-9:04 am

1 stop21h 05m

$203

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 2/2

7:15 am-1:40 pm

1 stop5h 25m

Toronto Pearson Intl

Mon 2/9

12:05 pm-1:01 pm

Nonstop1h 56m

$207

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sat 3/28

12:45 pm-3:27 pm

Nonstop1h 42m

Toronto Island

Fri 4/3

2:30 pm-3:20 pm

Nonstop1h 50m

$216

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Fri 3/27

11:00 am-1:42 pm

Nonstop1h 42m

Toronto Island

Fri 4/3

2:30 pm-3:20 pm

Nonstop1h 50m

$218

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 12/29

6:16 pm-9:21 pm

Nonstop2h 05m

Toronto Pearson Intl

Sat 1/3

9:00 pm-10:05 pm

Nonstop2h 05m

$225

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Tue 12/23

11:00 am-1:42 pm

Nonstop1h 42m

Toronto Island

Sat 1/3

2:30 pm-3:20 pm

Nonstop1h 50m

$274

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 September is, on average, the cheapest month to fly to Region of Ontario from Illinois, with most prices found around $209. If you aren’t able to travel during the month of September, 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 September, still average around $234.

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 $616. 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 $761. 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 $587. 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 $760.

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 $308 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	$89
Fastest flight time	1h 39m
Direct flights	Every day
Airports in Region of Ontario	2 airports

The best one-way flight to Region of Ontario from Illinois in the past 72 hours is $89. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is $222.

The fastest flight from Illinois to Region of Ontario takes 1h 39m

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

There are 2 airports near Region of Ontario: 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 October 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 Embraer 175 (Enhanced Winglets), representing 19.32% of all bookings. The subsequent popular models are De Havilland (Bombardier) DHC-8-400 Dash 8Q at 17.82%, Embraer 175 at 13.33%, and Boeing 737-800 at 7.14%.

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 $118	Free Cancellation	Rating 7.1 10,250 reviews	Search Air Canada flights
United Airlines	PriceFrom $145	Free Cancellation	Rating 7.4 8,957 reviews	Search United Airlines flights
Porter Airlines	PriceFrom $185	Free Cancellation	Rating 7.9 376 reviews	Search Porter Airlines flights
American Airlines	PriceFrom $230	Free Cancellation	Rating 7.2 11,041 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.