What airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Region of Ontario according to our data. Air Canada is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Chicago O'Hare Intl?

United Airlines, Air Canada, and Porter Airlines are the most popular carriers operating from Ontario to Chicago O'Hare Intl

How long does it take to fly to Chicago O'Hare Intl Airport?

On average, it takes 1h 52m to fly from Region of Ontario to Chicago O'Hare Intl Airport if you fly out of Toronto (the most popular airport in Region of Ontario) and into Chicago O'Hare Intl Airport (the most popular airport in Chicago O'Hare Intl Airport). If you’re flying out of Ottawa and into Chicago O'Hare Intl Airport, then the flight time is around 2h 19m.

When did momondo last update prices for flights from Ontario to Chicago O'Hare Intl Airport?

Prices for flights from Ontario to Chicago O'Hare Intl Airport were last updated today.

How many operators does momondo search for flights from Ontario to Chicago O'Hare Intl Airport?

As of June 2026, there are 4 operators available to choose from for flights from Ontario to Chicago O'Hare Intl Airport.

How old do you have to be to fly from Ontario to Chicago O'Hare Intl Airport?

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 Ontario to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$135 Cheap Flights from Region of Ontario to Chicago O'Hare Intl Airport in 2026

Q: How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per day?

98 flights are operational daily from Region of Ontario to Chicago O'Hare Intl Airport as of June 2026. The most popular departure time for this route is 1:00PM, with 42% of flights per day taking off at noon.

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Find the cheapest flights from Ontario to Chicago

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

9:50 am - 12:35 pm

ORD

YYZ

1h 45mnonstop

$206Air Canada

Sat, Sep 5 - Mon, Sep 7

7:25 pm - 8:29 pm

YTZ

ORD

2h 04mnonstop

7:25 am - 10:07 am

ORD

YTZ

1h 42mnonstop

$206Air Canada

Thu, Jul 2 - Sun, Jul 5

11:00 am - 12:00 pm

YYZ

ORD

2h 00mnonstop

7:09 am - 9:54 am

ORD

YYZ

1h 45mnonstop

$207United Airlines

Fri, Oct 2 - Mon, Oct 5

8:40 pm - 9:35 pm

YTZ

ORD

1h 55mnonstop

11:00 am - 1:42 pm

ORD

YTZ

1h 42mnonstop

$211Porter Airlines

Fri, Oct 23 - Tue, Oct 27

1:40 pm - 2:35 pm

YTZ

ORD

1h 55mnonstop

6:10 pm - 8:50 pm

ORD

YTZ

1h 40mnonstop

$216Porter Airlines

Thu, Oct 1 - Sat, Oct 31

8:40 am - 1:22 pm

YUL

ORD

5h 42m

2 stops

3:20 pm - 8:10 pm

ORD

YUL

3h 50m

1 stop

$291Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

6:10 am - 7:51 am

YUL

ORD

2h 41mnonstop

8:45 am - 2:40 pm

ORD

YUL

4h 55m

1 stop

$292United Airlines

Thu, Sep 3 - Tue, Sep 8

6:55 am - 2:35 pm

YOW

ORD

8h 40m

1 stop

11:45 am - 8:05 am

ORD

YOW

19h 20m

1 stop

$394Multiple Airlines

Thu, Sep 24 - Sun, Sep 27

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

8:40 am - 2:05 pm

YOW

ORD

6h 25m

1 stop

9:40 am - 4:49 pm

ORD

YOW

6h 09m

1 stop

$410American Airlines

Tue, Oct 20 - Mon, Oct 26

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Air Canada flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best Air Canada deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

Air Canada

Sep 5

YYZ6:55 pmToronto Pearson Intl

1h 57m

ORD7:52 pmChicago O'Hare Intl

Sep 7

ORD9:50 amChicago O'Hare Intl

1h 45m

YYZ12:35 pmToronto Pearson Intl

$206

Air Canada

Aug 20

YTZ7:25 pmToronto Island

2h 04m

ORD8:29 pmChicago O'Hare Intl

Aug 23

ORD8:45 amChicago O'Hare Intl

6h 06m

1 stop

YTZ3:51 pmToronto Island

$208

Air Canada

Jul 2

YYZ4:00 pmToronto Pearson Intl

1h 57m

ORD4:57 pmChicago O'Hare Intl

Jul 5

ORD9:50 amChicago O'Hare Intl

1h 45m

YYZ12:35 pmToronto Pearson Intl

$209

Porter Airlines flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best Porter Airlines deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

Porter Airlines

Oct 12

YTZ1:40 pmToronto Island

1h 55m

ORD2:35 pmChicago O'Hare Intl

Oct 13

ORD7:00 amChicago O'Hare Intl

1h 40m

YTZ9:40 amToronto Island

$207

Porter Airlines

Oct 23

YTZ8:40 pmToronto Island

1h 55m

ORD9:35 pmChicago O'Hare Intl

Oct 27

ORD11:00 amChicago O'Hare Intl

1h 42m

YTZ1:42 pmToronto Island

$211

Porter Airlines

Oct 16

YTZ1:40 pmToronto Island

1h 55m

ORD2:35 pmChicago O'Hare Intl

Oct 17

ORD7:00 amChicago O'Hare Intl

1h 40m

YTZ9:40 amToronto Island

$214

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 9/5

6:55 pm-7:52 pm

Nonstop1h 57m

Chicago O'Hare Intl

Mon 9/7

9:50 am-12:35 pm

Nonstop1h 45m

$206

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Thu 7/2

7:25 pm-8:29 pm

Nonstop2h 04m

Chicago O'Hare Intl

Sun 7/5

7:25 am-10:07 am

Nonstop1h 42m

$206

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 10/2

11:00 am-12:00 pm

Nonstop2h 00m

Chicago O'Hare Intl

Mon 10/5

7:09 am-9:54 am

Nonstop1h 45m

$207

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Fri 10/23

8:40 pm-9:35 pm

Nonstop1h 55m

Chicago O'Hare Intl

Tue 10/27

11:00 am-1:42 pm

Nonstop1h 42m

$211

Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Thu 10/1

1:40 pm-2:35 pm

Nonstop1h 55m

Chicago O'Hare Intl

Sat 10/31

6:10 pm-8:50 pm

Nonstop1h 40m

$216

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 9/4

8:40 am-1:22 pm

2 stops5h 42m

Chicago O'Hare Intl

Tue 9/8

3:20 pm-8:10 pm

1 stop3h 50m

$291

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/3

6:10 am-7:51 am

Nonstop2h 41m

Chicago O'Hare Intl

Tue 9/8

8:45 am-2:40 pm

1 stop4h 55m

$292

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 9/24

6:55 am-2:35 pm

1 stop8h 40m

Chicago O'Hare Intl

Sun 9/27

11:45 am-8:05 am

1 stop19h 20m

$394

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

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 10/20

8:40 am-2:05 pm

1 stop6h 25m

Chicago O'Hare Intl

Mon 10/26

9:40 am-4:49 pm

1 stop6h 09m

$410

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 Chicago O'Hare Intl Airport

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 Chicago O'Hare Intl Airport?

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Region of Ontario averaging around $60.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as $460. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Region of Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $748.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Region of Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $384 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $735. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ontario to Chicago O'Hare Intl flight route?

Fly from Toronto Island to Chicago O'Hare Intl for the best Ontario - Chicago O'Hare Intl flight prices

How far in advance should I book a flight from Ontario to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $303 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Region of Ontario for as low as $175 on momondo.

What cabin class options are available on Region of Ontario to Chicago O'Hare Intl Airport flights?

There are 4 cabin classes available to choose from on Region of Ontario to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Chicago O'Hare Intl Airport.

Cheap Region of Ontario to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago O'Hare Intl Airport

Best Price Found	$134
Fastest flight time	1h 55m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from Region of Ontario in the past 72 hours is $134. The best round-trip flight deal from Region of Ontario to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $254.

The fastest flight from Region of Ontario to Chicago O'Hare Intl Airport takes 1h 55m

Direct flights go from Region of Ontario to Chicago O'Hare Intl Airport every day.

Search flight deals

Frequently asked questions about flying from Ontario to Chicago O'Hare Intl Airport

When did momondo last update prices for flights from Ontario to Chicago O'Hare Intl Airport?
Prices for flights from Ontario to Chicago O'Hare Intl Airport were last updated today.
How many operators does momondo search for flights from Ontario to Chicago O'Hare Intl Airport?
As of June 2026, there are 4 operators available to choose from for flights from Ontario to Chicago O'Hare Intl Airport.
How old do you have to be to fly from Ontario to Chicago O'Hare Intl Airport?
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 Ontario to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Region of Ontario to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between Region of Ontario and Chicago O'Hare Intl Airport, the leading plane model is De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 14.53% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 10.35%, Boeing 737-800 with 7.92%, and Boeing 737 MAX 8 with 7.35%.

Best airlines flying from Region of Ontario to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Region of Ontario to Chicago O'Hare Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $153	Free Cancellation	Rating 7.1 11,197 reviews	Search Air Canada flights
United Airlines	PriceFrom $187	Free Cancellation	Rating 7.4 9,843 reviews	Search United Airlines flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
Porter Airlines	PriceFrom $192	Free Cancellation	Rating 8.0 438 reviews	Search Porter Airlines flights

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South Haven

Rockford

Merrillville

Gurnee

Rosemont

Naperville

Orland Park

Oak Brook

New Buffalo

Joliet

Kenosha

Aurora

Hammond

Racine

Janesville

Evanston

Elgin

South Holland

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Ontario to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

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 Ontario to Chicago.

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

Price alerts on flights to Chicago 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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Cheap flights from Ontario to Chicago 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 Chicago departing on 10/16. 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 Chicago O'Hare Intl Airport

Our best Air Canada deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

Porter Airlines flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best Porter Airlines deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

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Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

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How to get the cheapest flight ticket from Region of Ontario to Chicago O'Hare Intl Airport

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest Ontario to Chicago O'Hare Intl flight route?

How far in advance should I book a flight from Ontario to Chicago O'Hare Intl Airport?

What cabin class options are available on Region of Ontario to Chicago O'Hare Intl Airport flights?

Can stopping save me money on Region of Ontario to Chicago O'Hare Intl Airport flights?

What is the cheapest airline that flies from Ontario to Chicago O'Hare Intl?

What airlines fly to Chicago O'Hare Intl Airport?

How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per day?

How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per week?

How long does it take to fly to Chicago O'Hare Intl Airport?

Cheap Region of Ontario to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago O'Hare Intl Airport

Best Price Found

Fastest flight time

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Frequently asked questions about flying from Ontario to Chicago O'Hare Intl Airport

Best airlines flying from Region of Ontario to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Region of Ontario to Chicago O'Hare Intl Airport with momondo

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