What airlines fly to Illinois?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Illinois from Region of Ontario according to our data. Air Canada is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

As of September 2026, there are 96 flights per day flying from Region of Ontario to Illinois. The most common time of day flights depart is 1:00PM, with 45% of flights taking off in the afternoon.

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

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

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

As of September 2026, there are 676 flights per week flying from Region of Ontario to Illinois. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

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

The flight from Region of Ontario to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Toronto (a popular airport in Region of Ontario) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 2h 01m on average. If you fly from Ottawa (another popular airport in Region of Ontario) to Chicago O'Hare Intl Airport, then the average flight time is 2h 19m.

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

Prices for flights from Ontario to Illinois were last updated today.

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

The number of operators available for flights from Ontario to Illinois is 4 as of September 2026.

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

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 Ontario to Illinois.

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

The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$130 Cheap Flights from Ontario to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Illinois

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 11:07 amYTZ Toronto Island-ORD Chicago O'Hare Intl

5h 22m1 stop Montreal Pierre Elliott Trudeau Intl

1:55 pm - 4:42 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 47mnonstop

$205Air Canada

Thu, Oct 29 - Thu, Nov 5

6:45 am - 11:07 amYTZ Toronto Island-ORD Chicago O'Hare Intl

5h 22m1 stop Montreal Pierre Elliott Trudeau Intl

1:55 pm - 4:42 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 47mnonstop

$205Air Canada

Wed, Nov 18 - Thu, Nov 19

8:35 am - 9:44 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mnonstop

9:21 pm - 11:59 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 38mnonstop

$205United Airlines

Fri, Oct 30 - Fri, Oct 30

5:55 pm - 7:05 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 10mnonstop

1:57 pm - 4:47 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$205United Airlines

Wed, Oct 28 - Sat, Oct 31

7:09 am - 8:39 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

2:50 pm - 5:40 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$205American Airlines

Sat, Nov 21 - Tue, Nov 24

6:25 pm - 7:30 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mnonstop

9:42 am - 12:32 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$205American Airlines

Thu, Oct 29 - Thu, Nov 5

9:00 pm - 10:06 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mnonstop

8:40 pm - 11:26 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mnonstop

$205Multiple Airlines

Mon, Oct 5 - Sat, Oct 10

5:55 pm - 7:05 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 10mnonstop

8:45 am - 11:27 amORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 42mnonstop

$205Multiple Airlines

Wed, Nov 18 - Thu, Nov 19

4:35 pm - 5:40 pmYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

6:20 pm - 9:06 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mnonstop

$206Porter Airlines

Thu, Nov 12 - Sun, Nov 15

1:45 pm - 2:35 pmYTZ Toronto Island-MDW Chicago Midway

1h 50mnonstop

11:45 am - 2:25 pmMDW Chicago Midway-YTZ Toronto Island

1h 40mnonstop

$207Porter Airlines

Fri, Oct 2 - Sun, Oct 4

Cheap last minute flights

Enter your travel dates to find the best prices.

10:10 am - 11:00 amYTZ Toronto Island-MDW Chicago Midway

1h 50mnonstop

11:45 am - 2:25 pmMDW Chicago Midway-YTZ Toronto Island

1h 40mnonstop

$244Porter Airlines

Thu, Sep 24 - Mon, Sep 28

10:10 am - 11:00 amYTZ Toronto Island-MDW Chicago Midway

1h 50mnonstop

11:45 am - 2:25 pmMDW Chicago Midway-YTZ Toronto Island

1h 40mnonstop

$245Porter Airlines

Tue, Sep 22 - Tue, Sep 29

9:30 am - 2:52 pmYTZ Toronto Island-ORD Chicago O'Hare Intl

6h 22m1 stop Montreal Pierre Elliott Trudeau Intl

2:00 pm - 4:48 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mnonstop

$268Air Canada

Wed, Sep 23 - Fri, Oct 16

8:30 am - 2:52 pmYTZ Toronto Island-ORD Chicago O'Hare Intl

7h 22m1 stop Montreal Pierre Elliott Trudeau Intl

2:00 pm - 4:48 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 48mnonstop

$268Air Canada

Tue, Sep 22 - Tue, Oct 20

11:00 am - 12:00 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mnonstop

7:09 am - 9:54 amORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mnonstop

$269United Airlines

Thu, Sep 24 - Fri, Oct 16

2:45 pm - 3:51 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mnonstop

9:20 pm - 11:59 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 39mnonstop

$269United Airlines

Thu, Sep 24 - Wed, Oct 21

8:50 am - 9:48 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 58mnonstop

3:45 pm - 6:31 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mnonstop

$270Multiple Airlines

Thu, Sep 24 - Sun, Sep 27

8:50 am - 9:53 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mnonstop

2:15 pm - 5:01 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mnonstop

$270Multiple Airlines

Wed, Sep 23 - Wed, Sep 30

1:15 pm - 2:20 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mnonstop

9:45 am - 12:35 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$293American Airlines

Thu, Sep 24 - Tue, Sep 29

6:04 pm - 10:35 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

5h 31m1 stop Philadelphia

4:00 pm - 11:46 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 46m1 stop Philadelphia

$295American Airlines

Mon, Sep 21 - Fri, Oct 2

Cheap direct flights

Enter your travel dates to find the best prices.

6:25 pm - 7:30 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mnonstop

9:42 am - 12:32 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$205American Airlines

Thu, Oct 29 - Thu, Nov 5

7:09 am - 8:39 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

2:50 pm - 5:40 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mnonstop

$205American Airlines

Sat, Nov 21 - Tue, Nov 24

8:20 am - 9:23 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mnonstop

4:30 pm - 7:10 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 40mnonstop

$205Air Canada

Thu, Oct 29 - Thu, Oct 29

8:20 am - 9:23 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mnonstop

4:30 pm - 7:10 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 40mnonstop

$205Air Canada

Sun, Oct 25 - Fri, Oct 30

7:26 pm - 8:48 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 22mnonstop

7:03 am - 9:47 amORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 44mnonstop

$205United Airlines

Fri, Oct 30 - Sat, Oct 31

10:53 am - 11:57 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 04mnonstop

9:21 pm - 11:59 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 38mnonstop

$205United Airlines

Fri, Oct 30 - Mon, Nov 2

8:50 am - 9:48 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 58mnonstop

10:15 am - 12:52 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 37mnonstop

$205Multiple Airlines

Fri, Oct 23 - Tue, Oct 27

7:00 am - 8:00 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mnonstop

8:40 pm - 11:23 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 43mnonstop

$205Multiple Airlines

Sat, Oct 24 - Tue, Oct 27

4:35 pm - 5:40 pmYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

6:20 pm - 9:06 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mnonstop

$206Porter Airlines

Thu, Nov 12 - Sun, Nov 15

1:45 pm - 2:35 pmYTZ Toronto Island-MDW Chicago Midway

1h 50mnonstop

11:45 am - 2:25 pmMDW Chicago Midway-YTZ Toronto Island

1h 40mnonstop

$207Porter Airlines

Fri, Oct 2 - Sun, Oct 4

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Air Canada flights from Region of Ontario to Illinois

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

Air Canada

Oct 1

YTZ10:45 amToronto Island

5h 07m

1 stop

ORD2:52 pmChicago O'Hare Intl

Oct 4

ORD8:45 amChicago O'Hare Intl

6h 05m

1 stop

YTZ3:50 pmToronto Island

$205

Air Canada

Oct 10

YYZ6:50 pmToronto Pearson Intl

1h 58m

ORD7:48 pmChicago O'Hare Intl

Oct 13

ORD8:40 pmChicago O'Hare Intl

1h 46m

YYZ11:26 pmToronto Pearson Intl

$206

Air Canada

Oct 1

YTZ12:15 pmToronto Island

2h 10m

ORD1:25 pmChicago O'Hare Intl

Oct 4

ORD2:00 pmChicago O'Hare Intl

1h 48m

YTZ4:48 pmToronto Island

$207

United Airlines flights from Region of Ontario to Illinois

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

United Airlines

Oct 23

YYZ7:00 amToronto Pearson Intl

2h 00m

ORD8:00 amChicago O'Hare Intl

Oct 25

ORD9:21 pmChicago O'Hare Intl

1h 38m

YYZ11:59 pmToronto Pearson Intl

$205

United Airlines

Oct 2

YYZ7:43 pmToronto Pearson Intl

4h 49m

1 stop

ORD11:32 pmChicago O'Hare Intl

Oct 5

ORD9:52 pmChicago O'Hare Intl

11h 12m

1 stop

YYZ10:04 amToronto Pearson Intl

$228

United Airlines

Oct 2

YYZ2:30 pmToronto Pearson Intl

5h 11m

1 stop

ORD6:41 pmChicago O'Hare Intl

Oct 5

ORD6:06 pmChicago O'Hare Intl

4h 48m

1 stop

YYZ11:54 pmToronto Pearson Intl

$230

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Thu 10/29

6:45 am-11:07 am

1 stop5h 22m

Chicago O'Hare Intl

Thu 11/5

1:55 pm-4:42 pm

Nonstop1h 47m

$205

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Wed 11/18

6:45 am-11:07 am

1 stop5h 22m

Chicago O'Hare Intl

Thu 11/19

1:55 pm-4:42 pm

Nonstop1h 47m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Fri 10/30

8:35 am-9:44 am

Nonstop2h 09m

Chicago O'Hare Intl

Fri 10/30

9:21 pm-11:59 pm

Nonstop1h 38m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Wed 10/28

5:55 pm-7:05 pm

Nonstop2h 10m

Chicago O'Hare Intl

Sat 10/31

1:57 pm-4:47 pm

Nonstop1h 50m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sat 11/21

7:09 am-8:39 am

Nonstop2h 30m

Chicago O'Hare Intl

Tue 11/24

2:50 pm-5:40 pm

Nonstop1h 50m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 10/29

6:25 pm-7:30 pm

Nonstop2h 05m

Chicago O'Hare Intl

Thu 11/5

9:42 am-12:32 pm

Nonstop1h 50m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Mon 10/5

9:00 pm-10:06 pm

Nonstop2h 06m

Chicago O'Hare Intl

Sat 10/10

8:40 pm-11:26 pm

Nonstop1h 46m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Wed 11/18

5:55 pm-7:05 pm

Nonstop2h 10m

Chicago O'Hare Intl

Thu 11/19

8:45 am-11:27 am

Nonstop1h 42m

$205

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Thu 11/12

4:35 pm-5:40 pm

Nonstop2h 05m

Chicago O'Hare Intl

Sun 11/15

6:20 pm-9:06 pm

Nonstop1h 46m

$206

Quickest round-trip

TorontoChicago

YTZ Toronto Island - MDW Chicago Midway

YTZMDW

Toronto Island

Fri 10/2

1:45 pm-2:35 pm

Nonstop1h 50m

Chicago Midway

Sun 10/4

11:45 am-2:25 pm

Nonstop1h 40m

$207

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 Region of Ontario to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Region of Ontario is in January. Flight prices, which tend to average around $255, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $270.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Region of Ontario to Illinois is on a Friday when prices can be found for as low as $483. Flights from Region of Ontario to Illinois on a Monday will generally be more expensive and average around $701. 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 Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Region of Ontario to Illinois during this time can be as low as $420. Flights in the afternoon are often more expensive with an average ticket price of $805.

What is the cheapest Ontario to Illinois flight route?

Fly from Toronto Island to Chicago Midway for the best Ontario - Illinois flight prices

How far in advance should I book a flight from Ontario to Illinois?

You are more likely to see cheaper flights to Illinois from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $314 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Region of Ontario for as low as $175 on momondo.

What cabin class options are available on Region of Ontario to Illinois flights?

There are 4 cabin classes available to choose from on Region of Ontario to Illinois 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 Region of Ontario to Illinois flights?

You could potentially save up to 1% on your flight if you consider stops on a Region of Ontario to Illinois flight.

Cheap Region of Ontario to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Illinois

Best Price Found	$130
Fastest flight time	1h 50m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Region of Ontario in the past 72 hours is $130. The best round-trip flight deal from Region of Ontario to Illinois found on momondo in the last 72 hours is $205.

The fastest flight from Region of Ontario to Illinois takes 1h 50m

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

There are 98 airports in Illinois. From Region of Ontario there are direct flights to Chicago Midway (MDW).

Search flight deals

Frequently asked questions about flying from Ontario to Illinois

When did momondo last update prices for flights from Ontario to Illinois?
Prices for flights from Ontario to Illinois were last updated today.
How many operators does momondo search for flights from Ontario to Illinois?
The number of operators available for flights from Ontario to Illinois is 4 as of September 2026.
How old do you have to be to fly from Ontario to Illinois?
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 Ontario to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois 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 Illinois. 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 Illinois?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to Illinois is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 25.03% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 10.47%, Boeing 737-900 at 9.55%, and Embraer 195 E2 at 7.45%.

Best airlines flying from Region of Ontario to Illinois

Compare and see reviews for airlines that fly from Region of Ontario to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $137	Free Cancellation	Rating 7.1 11,652 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $168	Free Cancellation	Rating 8.0 462 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $190	Free Cancellation	Rating 7.4 10,232 reviews	Search United Airlines flights
American Airlines	PriceFrom $193	Free Cancellation	Rating 7.0 12,087 reviews	Search American Airlines flights

Why use momondo?

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

Finding the right flight to Illinois from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Illinois from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Popular cities in Illinois

Flights to New Yorkfrom $68

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Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $60

Flights to Bostonfrom $92

Flights to Fort Lauderdalefrom $59

Flights to Atlantafrom $48

Flights to Dallasfrom $59

Cheap flights from Ontario to Illinois from $130

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 Illinois departing on 11/26. 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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Air Canada flights from Region of Ontario to Illinois

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

United Airlines flights from Region of Ontario to Illinois

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

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Use the filters below to find and compare flights from Ontario to Illinois that are best for you.

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How to get the cheapest flight ticket from Region of Ontario to Illinois

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

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

What is the cheapest Ontario to Illinois flight route?

How far in advance should I book a flight from Ontario to Illinois?

What cabin class options are available on Region of Ontario to Illinois flights?

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

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

What airlines fly to Illinois?

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

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

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

Cheap Region of Ontario to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from Ontario to Illinois

Best airlines flying from Region of Ontario to Illinois

Compare and see reviews for airlines that fly from Region of Ontario to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois 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 Illinois

Popular cities in Illinois

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

Illinois flight routes

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