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 1h 52m 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.

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

As of June 2026, there are 829 flights per week flying from Region of Ontario to Illinois. The most common day of the week flights depart is Fri, with 16% of flights taking off on this day.

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

As of June 2026, there are 118 flights per day flying from Region of Ontario to Illinois. The most common time of day flights depart is 1:00PM, with 43% of flights taking off at noon.

What airlines fly to Illinois?

Air Canada, United Airlines and American 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 40% 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.

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

United Airlines, Porter Airlines, and Delta are the most popular carriers operating 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 June 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.

$135 Cheap Flights from Ontario to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:55 pm - 7:52 pm

YYZ

ORD

1h 57mnonstop

8:40 pm - 11:25 pm

ORD

YYZ

1h 45mnonstop

$206Air Canada

Fri, Sep 4 - Sun, Sep 6

8:50 am - 9:40 am

YTZ

MDW

1h 50mnonstop

10:25 am - 1:05 pm

MDW

YTZ

1h 40mnonstop

$206Porter Airlines

Sun, Jun 28 - Wed, Jul 1

12:15 pm - 1:19 pm

YTZ

ORD

2h 04mnonstop

7:25 am - 10:07 am

ORD

YTZ

1h 42mnonstop

$206Air Canada

Tue, Jun 30 - Tue, Jul 7

5:27 pm - 6:30 pm

YYZ

ORD

2h 03mnonstop

8:50 am - 11:49 am

ORD

YYZ

1h 59mnonstop

$207United Airlines

Fri, Oct 2 - Mon, Oct 5

10:05 am - 11:00 am

YTZ

ORD

1h 55mnonstop

3:20 pm - 6:00 pm

ORD

YTZ

1h 40mnonstop

$207Porter Airlines

Fri, Sep 11 - Mon, Sep 14

12:15 pm - 6:31 pm

YYZ

MDW

7h 16m

1 stop

9:30 am - 5:20 pm

MDW

YYZ

6h 50m

1 stop

$240Delta

Fri, Sep 11 - Mon, Sep 14

12:09 pm - 6:25 pm

YYZ

MDW

7h 16m

1 stop

9:19 am - 5:24 pm

MDW

YYZ

7h 05m

1 stop

$244Delta

Fri, Jul 10 - Tue, Jul 28

9:45 am - 11:21 am

YUL

ORD

2h 36mnonstop

8:45 am - 2:40 pm

ORD

YUL

4h 55m

1 stop

$293United Airlines

Thu, Sep 3 - Sun, Sep 6

7:17 am - 1:53 pm

YYZ

STL

7h 36m

1 stop

6:55 am - 5:34 pm

STL

YYZ

9h 39m

1 stop

$335American Airlines

Wed, Jul 15 - Wed, Jul 22

8:40 am - 2:05 pm

YOW

ORD

6h 25m

1 stop

11:40 am - 6:24 pm

ORD

YOW

5h 44m

1 stop

$395American Airlines

Wed, Oct 21 - Tue, Oct 27

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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

Jun 30

YTZ12:15 pmToronto Island

2h 04m

ORD1:19 pmChicago O'Hare Intl

Jul 7

ORD7:25 amChicago O'Hare Intl

1h 42m

YTZ10:07 amToronto Island

$206

Air Canada

Jun 25

YYZ2:00 pmToronto Pearson Intl

1h 55m

ORD2:55 pmChicago O'Hare Intl

Jun 28

ORD3:45 pmChicago O'Hare Intl

1h 46m

YYZ6:31 pmToronto Pearson Intl

$208

Air Canada

Sep 4

YYZ4:00 pmToronto Pearson Intl

5h 05m

1 stop

ORD8:05 pmChicago O'Hare Intl

Sep 7

ORD9:50 amChicago O'Hare Intl

1h 45m

YYZ12:35 pmToronto Pearson Intl

$209

Porter Airlines flights from Region of Ontario to Illinois

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

Porter Airlines

Jun 28

YTZ8:50 amToronto Island

1h 50m

MDW9:40 amChicago Midway

Jul 1

MDW10:25 amChicago Midway

1h 40m

YTZ1:05 pmToronto Island

$206

Porter Airlines

Sep 11

YTZ10:05 amToronto Island

1h 55m

ORD11:00 amChicago O'Hare Intl

Sep 14

ORD3:20 pmChicago O'Hare Intl

1h 40m

YTZ6:00 pmToronto Island

$207

Porter Airlines

Sep 4

YTZ1:40 pmToronto Island

1h 55m

ORD2:35 pmChicago O'Hare Intl

Sep 16

ORD3:20 pmChicago O'Hare Intl

1h 40m

YTZ6:00 pmToronto Island

$208

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 9/4

6:55 pm-7:52 pm

Nonstop1h 57m

Chicago O'Hare Intl

Sun 9/6

8:40 pm-11:25 pm

Nonstop1h 45m

$206

Quickest round-trip

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Sun 6/28

8:50 am-9:40 am

Nonstop1h 50m

Chicago Midway

Wed 7/1

10:25 am-1:05 pm

Nonstop1h 40m

$206

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Tue 6/30

12:15 pm-1:19 pm

Nonstop2h 04m

Chicago O'Hare Intl

Tue 7/7

7:25 am-10:07 am

Nonstop1h 42m

$206

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 10/2

5:27 pm-6:30 pm

Nonstop2h 03m

Chicago O'Hare Intl

Mon 10/5

8:50 am-11:49 am

Nonstop1h 59m

$207

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Fri 9/11

10:05 am-11:00 am

Nonstop1h 55m

Chicago O'Hare Intl

Mon 9/14

3:20 pm-6:00 pm

Nonstop1h 40m

$207

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Fri 9/11

12:15 pm-6:31 pm

1 stop7h 16m

Chicago Midway

Mon 9/14

9:30 am-5:20 pm

1 stop6h 50m

$240

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Fri 7/10

12:09 pm-6:25 pm

1 stop7h 16m

Chicago Midway

Tue 7/28

9:19 am-5:24 pm

1 stop7h 05m

$244

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/3

9:45 am-11:21 am

Nonstop2h 36m

Chicago O'Hare Intl

Sun 9/6

8:45 am-2:40 pm

1 stop4h 55m

$293

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 7/15

7:17 am-1:53 pm

1 stop7h 36m

Lambert-St Louis

Wed 7/22

6:55 am-5:34 pm

1 stop9h 39m

$335

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 10/21

8:40 am-2:05 pm

1 stop6h 25m

Chicago O'Hare Intl

Tue 10/27

11:40 am-6:24 pm

1 stop5h 44m

$395

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 August. Flight prices, which tend to average around $244, 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 August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $259.

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 $469. Flights from Region of Ontario to Illinois on a Monday 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 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 $401. Flights in the afternoon are often more expensive with an average ticket price of $731.

What is the cheapest Ontario to Illinois flight route?

Fly from Toronto Island to Chicago O'Hare Intl 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 $303 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?

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

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	$134
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 $134. The best round-trip flight deal from Region of Ontario to Illinois found on momondo in the last 72 hours is $224.

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 June 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 16.86% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 10.67%, Boeing 737 MAX 8 at 7.26%, and Boeing 737-800 at 7.25%.

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 $154	Free Cancellation	Rating 7.1 11,172 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $163	Free Cancellation	Rating 8.0 438 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $187	Free Cancellation	Rating 7.4 9,814 reviews	Search United Airlines flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,650 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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Flights to Dallasfrom $73

Flights to Fort Lauderdalefrom $56

Cheap flights from Ontario to Illinois from $135

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 9/4. 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

Porter Airlines flights from Region of Ontario to Illinois

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

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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

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

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

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