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 50% 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, Porter Airlines, and Air Canada 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 2h 02m 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 September 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.

$130 Cheap Flights from Region of Ontario to Chicago O'Hare Intl Airport in 2026/27

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

The number of flights available between Region of Ontario and Chicago O'Hare Intl Airport is 684 per week as of September 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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

97 flights are operational daily from Region of Ontario to Chicago O'Hare Intl Airport as of September 2026. The most popular departure time for this route is 1:00PM, with 45% of flights per day taking off in the afternoon.

Discover deals from 900+ travel sites with momondo.

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.

12:25 pm - 1:23 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 58mnonstop

9:55 am - 12:40 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mnonstop

$198Air Canada

Tue, Oct 6 - Sat, Oct 10

8:05 am - 9:00 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mnonstop

3:40 pm - 11:18 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 38m1 stop Montreal Pierre Elliott Trudeau Intl

$201Air Canada

Tue, Oct 6 - Sat, Oct 10

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 - 5:41 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 51mnonstop

$205American Airlines

Wed, Nov 4 - Wed, Nov 4

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

2h 00mnonstop

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

1h 44mnonstop

$205United Airlines

Sat, Oct 24 - Sun, Oct 25

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

2h 04mnonstop

3:47 pm - 6:45 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 58mnonstop

$205United Airlines

Tue, Nov 24 - Tue, Nov 24

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

2h 00mnonstop

9:55 am - 12:40 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mnonstop

$205Multiple Airlines

Fri, Oct 2 - Sun, Oct 4

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

2h 04mnonstop

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

1h 42mnonstop

$205Multiple Airlines

Sun, Nov 8 - Wed, Nov 11

10:35 am - 11:40 amYTZ 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

Sat, Oct 31 - Fri, Nov 6

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

2h 05mnonstop

12:20 pm - 3:06 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mnonstop

$208Porter Airlines

Wed, Nov 11 - Sat, Nov 14

Cheap last minute flights

Enter your travel dates to find the best prices.

7:40 am - 8:35 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mnonstop

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

1h 46mnonstop

$270Air Canada

Mon, Sep 21 - Fri, Oct 2

7:40 am - 8:35 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mnonstop

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

1h 46mnonstop

$270Air Canada

Mon, Sep 21 - Tue, Oct 13

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

2h 00mnonstop

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

1h 39mnonstop

$270United Airlines

Mon, Sep 21 - Fri, Oct 16

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

2h 03mnonstop

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

1h 45mnonstop

$270United Airlines

Sun, Sep 20 - Wed, Sep 30

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

2h 03mnonstop

5:35 pm - 8:18 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 43mnonstop

$270Multiple Airlines

Sun, Sep 20 - Tue, Sep 29

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

2h 00mnonstop

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

1h 46mnonstop

$270Multiple Airlines

Fri, Sep 18 - Fri, Sep 25

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

6:04 pm - 11:56 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

6h 52m1 stop Philadelphia

8:59 am - 2:59 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 00m1 stop Charlotte Douglas

$295American Airlines

Mon, Sep 21 - Wed, Sep 30

6:30 am - 7:40 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 10mnonstop

2:51 pm - 5:44 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 53mnonstop

$385Porter Airlines

Fri, Sep 18 - Thu, Sep 24

7:15 pm - 8:20 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mnonstop

8:30 pm - 11:26 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 56mnonstop

$402Porter Airlines

Fri, Sep 18 - Mon, Sep 21

Cheap direct flights

Enter your travel dates to find the best prices.

12:25 pm - 1:23 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 58mnonstop

9:55 am - 12:40 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mnonstop

$198Air Canada

Tue, Oct 6 - Sat, Oct 10

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

6:45 am - 7:54 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

Sun, Oct 25 - Sun, Nov 1

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

8:05 am - 9:00 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mnonstop

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

1h 43mnonstop

$205Air Canada

Sat, Oct 24 - Mon, Oct 26

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

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

2h 09mnonstop

12:50 pm - 3:33 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 43mnonstop

$205Multiple Airlines

Fri, Oct 30 - Tue, Nov 3

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

10:35 am - 11:40 amYTZ 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

Sat, Oct 31 - Fri, Nov 6

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

2h 05mnonstop

12:20 pm - 3:06 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mnonstop

$208Porter Airlines

Wed, Nov 11 - Sat, Nov 14

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Oct 6

YYZ12:25 pmToronto Pearson Intl

1h 58m

ORD1:23 pmChicago O'Hare Intl

Oct 10

ORD9:55 amChicago O'Hare Intl

1h 45m

YYZ12:40 pmToronto Pearson Intl

$198

Air Canada

Oct 6

YYZ8:05 amToronto Pearson Intl

1h 55m

ORD9:00 amChicago O'Hare Intl

Oct 10

ORD3:40 pmChicago O'Hare Intl

6h 38m

1 stop

YYZ11:18 pmToronto Pearson Intl

$201

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

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

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

American Airlines

Sep 25

YYZ5:45 pmToronto Pearson Intl

5h 46m

1 stop

ORD10:31 pmChicago O'Hare Intl

Sep 29

ORD6:55 amChicago O'Hare Intl

5h 43m

1 stop

YYZ1:38 pmToronto Pearson Intl

$230

American Airlines

Sep 26

YYZ6:00 amToronto Pearson Intl

7h 14m

1 stop

ORD12:14 pmChicago O'Hare Intl

Sep 29

ORD9:45 amChicago O'Hare Intl

1h 50m

YYZ12:35 pmToronto Pearson Intl

$243

American Airlines

Oct 25

YYZ6:15 amToronto Pearson Intl

7h 03m

1 stop

ORD12:18 pmChicago O'Hare Intl

Nov 1

ORD8:00 amChicago O'Hare Intl

1h 50m

YYZ10:50 amToronto Pearson Intl

$246

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

Quickest round-trip

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Tue 10/6

12:25 pm-1:23 pm

Nonstop1h 58m

Chicago O'Hare Intl

Sat 10/10

9:55 am-12:40 pm

Nonstop1h 45m

$198

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Tue 10/6

8:05 am-9:00 am

Nonstop1h 55m

Chicago O'Hare Intl

Sat 10/10

3:40 pm-11:18 pm

1 stop6h 38m

$201

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

Wed 11/4

7:09 am-8:39 am

Nonstop2h 30m

Chicago O'Hare Intl

Wed 11/4

2:50 pm-5:41 pm

Nonstop1h 51m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sat 10/24

11:00 am-12:00 pm

Nonstop2h 00m

Chicago O'Hare Intl

Sun 10/25

7:03 am-9:47 am

Nonstop1h 44m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Tue 11/24

10:53 am-11:57 am

Nonstop2h 04m

Chicago O'Hare Intl

Tue 11/24

3:47 pm-6:45 pm

Nonstop1h 58m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Fri 10/2

7:00 am-8:00 am

Nonstop2h 00m

Chicago O'Hare Intl

Sun 10/4

9:55 am-12:40 pm

Nonstop1h 45m

$205

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Sun 11/8

10:53 am-11:57 am

Nonstop2h 04m

Chicago O'Hare Intl

Wed 11/11

8:45 am-11:27 am

Nonstop1h 42m

$205

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Sat 10/31

10:35 am-11:40 am

Nonstop2h 05m

Chicago O'Hare Intl

Fri 11/6

6:20 pm-9:06 pm

Nonstop1h 46m

$206

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Wed 11/11

4:35 pm-5:40 pm

Nonstop2h 05m

Chicago O'Hare Intl

Sat 11/14

12:20 pm-3:06 pm

Nonstop1h 46m

$208

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 May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Region of Ontario averaging around $298.

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 $473. 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 $694.

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 $403 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $801. 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 $314 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?

You could potentially save up to 1% on your flight if you consider stops on a Region of Ontario to Chicago O'Hare Intl Airport flight.

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	$130
Fastest flight time	2h 00m
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 $130. 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 $198.

The fastest flight from Region of Ontario to Chicago O'Hare Intl Airport takes 2h 00m

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 September 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 20.12% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 10.88%, Boeing 737-900 with 9.50%, and Embraer 195 E2 with 9.18%.

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 $137	Free Cancellation	Rating 7.1 11,630 reviews	Search Air Canada flights
United Airlines	PriceFrom $190	Free Cancellation	Rating 7.4 10,208 reviews	Search United Airlines flights
American Airlines	PriceFrom $193	Free Cancellation	Rating 7.1 12,056 reviews	Search American Airlines flights
Porter Airlines	PriceFrom $232	Free Cancellation	Rating 8.0 461 reviews	Search Porter Airlines flights

Lake Geneva

Schaumburg

Merrillville

Rockford

South Haven

Rosemont

Gurnee

Oak Brook

Orland Park

Joliet

Naperville

New Buffalo

Kenosha

Hammond

Aurora

Racine

Elgin

Janesville

Evanston

Skokie

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.

An easier way to manage your Chicago O'Hare Intl Airport 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 10/15

Thu 10/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago

Popular cities

Other flights from Ontario

Other flights to Chicago

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in the United States

Flights to New York John F Kennedy Intl Airportfrom $139

Flights to Newark Airportfrom $91

Flights to New York LaGuardia Airportfrom $76

Flights to Dallas/Fort Worth Airportfrom $64

Flights to Washington, D.C. Dulles Intl Airportfrom $49

Flights to Orlando Airportfrom $56

Flights to Washington, D.C. Reagan-National Airportfrom $72

Flights to Chicago Midway Airport

Flights to Dallas Love Field Airport

Flights to Chicago Greater Rockford Airport

Cheap flights from Ontario to Chicago 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 Chicago departing on 11/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Ontario to Chicago

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

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

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

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.

See travel insights to Chicago from

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

Best Price Found

Fastest flight time

Direct flights

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

Traveling to a place near Chicago?

Why use momondo?

An easier way to manage your Chicago O'Hare Intl Airport 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 Chicago

Popular cities in the United States

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

Chicago O'Hare Intl Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Chicago

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Chicago

List of cabin classes available on flights landing in Chicago. Availability may vary depending on flight origin and airline.

Complete your trip to Chicago

Explore popular destinations other users love

According to popular flight searches on momondo this year