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

443 flights are operational weekly from Chicago to Region of Ontario as of November 2026. The most popular departure day for this route is Sun, with 18% of flights per week taking off on this day.

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

As of November 2026, 63 flights take off from Chicago and land in Region of Ontario each day. The most common flight departure time for this route is 11:00AM, with 39% of daily flights taking off at noon.

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 Chicago according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 6 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

Air Canada, Porter Airlines, and Air Transat are the most popular carriers operating from Chicago to Ontario

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

Prices for flights from Chicago to Ontario refresh daily.

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

There are 6 operators available for flights from Chicago to Ontario as of November 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ontario.

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

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$123 Cheap Flights from Chicago to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:25 am - 11:55 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

14h 30m1 stop Fort Lauderdale

4:20 pm - 4:14 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

24h 54m1 stop Fort Lauderdale

$276Multiple Airlines

Fri, Jan 22 - Sun, Jan 31

10:00 am - 3:20 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

28h 20m2 stops Dallas/Fort Worth Fort Lauderdale

4:20 pm - 4:14 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

24h 54m1 stop Fort Lauderdale

$281Multiple Airlines

Tue, Dec 15 - Wed, Jan 13

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

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

2h 05mnonstop

$309Porter Airlines

Fri, Dec 4 - Fri, Dec 11

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

10:29 am - 11:34 amYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

$310Porter Airlines

Fri, Dec 4 - Tue, Dec 8

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

1h 40mnonstop

4:30 pm - 5:43 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mnonstop

$317Air Canada

Mon, Nov 30 - Mon, Dec 7

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

1h 40mnonstop

4:30 pm - 5:43 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mnonstop

$319Air Canada

Sat, Nov 14 - Mon, Nov 16

8:52 am - 2:25 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

4h 33m1 stop Washington, D.C. Dulles Intl

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

2h 10mnonstop

$371United Airlines

Sat, Dec 12 - Sat, Dec 12

5:55 am - 2:25 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

7h 30m1 stop Washington, D.C. Dulles Intl

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

2h 10mnonstop

$371United Airlines

Tue, Dec 1 - Tue, Dec 1

2:45 pm - 5:38 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 53mnonstop

7:14 am - 8:44 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

$374American Airlines

Fri, Dec 25 - Tue, Dec 29

6:50 pm - 9:44 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 54mnonstop

7:14 am - 8:44 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

$374American Airlines

Mon, Dec 28 - Fri, Jan 1

Cheap last minute flights

Enter your travel dates to find the best prices.

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

1h 42mnonstop

6:55 pm - 7:58 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mnonstop

$350Air Canada

Wed, Nov 4 - Wed, Nov 11

6:20 pm - 9:05 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

10:29 am - 11:34 amYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

$384Porter Airlines

Mon, Nov 9 - Wed, Nov 11

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

10:29 am - 11:34 amYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

$388Porter Airlines

Thu, Nov 5 - Wed, Nov 11

8:45 pm - 11:46 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

2h 01mnonstop

6:21 pm - 7:41 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mnonstop

$417Qantas Airways

Thu, Nov 5 - Fri, Nov 6

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

1h 44mnonstop

6:21 pm - 7:41 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mnonstop

$422Multiple Airlines

Mon, Nov 9 - Fri, Nov 13

6:17 pm - 9:15 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 58mnonstop

6:21 pm - 7:41 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mnonstop

$422Multiple Airlines

Fri, Nov 6 - Sun, Nov 8

2:50 pm - 5:41 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 51mnonstop

1:17 pm - 2:37 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mnonstop

$546American Airlines

Wed, Nov 4 - Wed, Nov 18

6:44 pm - 10:56 pmMDW Chicago Midway-YYZ Toronto Pearson Intl

3h 12m1 stop Detroit Metropolitan Wayne County

6:00 am - 9:46 amYYZ Toronto Pearson Intl-MDW Chicago Midway

4h 46m1 stop Detroit Metropolitan Wayne County

$551Delta

Wed, Nov 4 - Sat, Nov 21

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

1h 42mnonstop

12:00 pm - 1:13 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mnonstop

$579Air Canada

Mon, Nov 9 - Thu, Nov 19

10:55 am - 4:34 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

4h 39m1 stop Washington, D.C. Reagan-National

1:17 pm - 2:37 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mnonstop

$637American Airlines

Sat, Nov 7 - Tue, Nov 17

Cheap direct flights

Enter your travel dates to find the best prices.

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

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

2h 05mnonstop

$309Porter Airlines

Fri, Dec 4 - Fri, Dec 11

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

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

2h 05mnonstop

$310Porter Airlines

Sat, Nov 14 - Mon, Nov 16

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

1h 40mnonstop

4:30 pm - 5:43 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mnonstop

$317Air Canada

Mon, Nov 30 - Mon, Dec 7

12:15 pm - 3:00 pmORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mnonstop

10:30 am - 11:35 amYTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mnonstop

$318Air Transat

Mon, Nov 30 - Wed, Dec 2

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

1h 40mnonstop

4:30 pm - 5:43 pmYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mnonstop

$319Air Canada

Sat, Nov 14 - Mon, Nov 16

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

1h 47mnonstop

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

2h 05mnonstop

$326Multiple Airlines

Mon, Nov 30 - Mon, Dec 7

2:45 pm - 5:38 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 53mnonstop

7:14 am - 8:44 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

$374American Airlines

Fri, Dec 25 - Tue, Dec 29

6:50 pm - 9:44 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 54mnonstop

7:14 am - 8:44 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mnonstop

$374American Airlines

Mon, Dec 28 - Fri, Jan 1

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

1h 58mnonstop

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

2h 22mnonstop

$385United Airlines

Thu, Dec 3 - Sun, Dec 6

6:17 pm - 9:15 pmORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 58mnonstop

6:45 am - 7:54 amYYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mnonstop

$385United Airlines

Mon, Nov 23 - Mon, Dec 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 Chicago to Region of Ontario

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

Air Canada

Nov 30

ORD4:30 pmChicago O'Hare Intl

1h 40m

YYZ7:10 pmToronto Pearson Intl

Dec 7

YYZ4:30 pmToronto Pearson Intl

2h 13m

ORD5:43 pmChicago O'Hare Intl

$317

Air Canada

Nov 14

ORD4:30 pmChicago O'Hare Intl

1h 40m

YYZ7:10 pmToronto Pearson Intl

Nov 16

YYZ4:30 pmToronto Pearson Intl

2h 13m

ORD5:43 pmChicago O'Hare Intl

$319

Air Canada

Dec 3

ORD8:45 amChicago O'Hare Intl

1h 42m

YYZ11:27 amToronto Pearson Intl

Dec 6

YYZ6:55 pmToronto Pearson Intl

2h 03m

ORD7:58 pmChicago O'Hare Intl

$320

Lufthansa flights from Chicago to Region of Ontario

Our best Lufthansa deals on Chicago to Region of Ontario flight tickets

Lufthansa

Nov 12

ORD1:57 pmChicago O'Hare Intl

1h 50m

YYZ4:47 pmToronto Pearson Intl

Nov 15

YYZ8:35 amToronto Pearson Intl

2h 09m

ORD9:44 amChicago O'Hare Intl

$359

Lufthansa

Nov 13

ORD7:03 amChicago O'Hare Intl

1h 44m

YYZ9:47 amToronto Pearson Intl

Nov 15

YYZ8:35 amToronto Pearson Intl

2h 09m

ORD9:44 amChicago O'Hare Intl

$360

Lufthansa

Dec 3

ORD5:55 amChicago O'Hare Intl

4h 53m

1 stop

YYZ11:48 amToronto Pearson Intl

Dec 6

YYZ5:55 pmToronto Pearson Intl

2h 10m

ORD7:05 pmChicago O'Hare Intl

$361

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Fri 1/22

8:25 am-11:55 pm

1 stop14h 30m

Toronto Pearson Intl

Sun 1/31

4:20 pm-4:14 pm

1 stop24h 54m

$276

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Tue 12/15

10:00 am-3:20 pm

2 stops28h 20m

Toronto Pearson Intl

Wed 1/13

4:20 pm-4:14 pm

1 stop24h 54m

$281

Quickest round-trip

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Fri 12/4

12:15 pm-3:00 pm

Nonstop1h 45m

Toronto Island

Fri 12/11

4:35 pm-5:40 pm

Nonstop2h 05m

$309

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Fri 12/4

12:15 pm-3:00 pm

Nonstop1h 45m

Toronto Island

Tue 12/8

10:29 am-11:34 am

Nonstop2h 05m

$310

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Mon 11/30

4:30 pm-7:10 pm

Nonstop1h 40m

Toronto Pearson Intl

Mon 12/7

4:30 pm-5:43 pm

Nonstop2h 13m

$317

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sat 11/14

4:30 pm-7:10 pm

Nonstop1h 40m

Toronto Pearson Intl

Mon 11/16

4:30 pm-5:43 pm

Nonstop2h 13m

$319

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sat 12/12

8:52 am-2:25 pm

1 stop4h 33m

Toronto Pearson Intl

Sat 12/12

5:55 pm-7:05 pm

Nonstop2h 10m

$371

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Tue 12/1

5:55 am-2:25 pm

1 stop7h 30m

Toronto Pearson Intl

Tue 12/1

5:55 pm-7:05 pm

Nonstop2h 10m

$371

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Fri 12/25

2:45 pm-5:38 pm

Nonstop1h 53m

Toronto Pearson Intl

Tue 12/29

7:14 am-8:44 am

Nonstop2h 30m

$374

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Mon 12/28

6:50 pm-9:44 pm

Nonstop1h 54m

Toronto Pearson Intl

Fri 1/1

7:14 am-8:44 am

Nonstop2h 30m

$374

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 Chicago 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 February is, on average, the cheapest month to fly to Region of Ontario from Chicago, with most prices found around $295. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from Chicago during June instead. Flights to Region of Ontario in June, while not as cheap as those in February, still average around $304.

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 Chicago. The lowest ticket price found for a Thursday departure recently was $423. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Chicago to Region of Ontario on a Monday will generally be more expensive and average around $637. 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 evening. momondo users have found flights departing from Chicago to Region of Ontario in the evening for as low as $418. 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 $793.

What is the cheapest Chicago to Ontario flight route?

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

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

You are more likely to see cheaper flights to Region of Ontario from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $339 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 Chicago for as low as $272 on momondo.

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

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

You could potentially save up to 6% on your flight if you consider stops on a Chicago to Region of Ontario flight.

Cheap Chicago to Region of Ontario flight deals and tips

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

Best Price Found	$123
Fastest flight time	1h 37m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Chicago in the past 72 hours is $123. The best round-trip flight deal from Chicago to Region of Ontario found on momondo in the last 72 hours is $276.

The fastest flight from Chicago to Region of Ontario takes 1h 37m

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

There are 125 airports in Region of Ontario. From Chicago there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).

Search flight deals

Frequently asked questions about flying from Chicago to Ontario

When did momondo last update prices for flights from Chicago to Ontario?
Prices for flights from Chicago to Ontario refresh daily.
How many operators does momondo search for flights from Chicago to Ontario?
There are 6 operators available for flights from Chicago to Ontario as of November 2026.
How old do you have to be to fly from Chicago to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Region of Ontario?
Based on momondo bookings for flights between Chicago and Region of Ontario, the leading plane model is De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 24.21% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 12.17%, Embraer 175 with 12.08%, and Boeing 737-800 with 8.49%.

Best airlines flying from Chicago to Region of Ontario

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $88	Free Cancellation	Rating 7.8 8,700 reviews	Search Delta flights
Qantas Airways	PriceFrom $160	Free Cancellation	Rating 7.5 1,122 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $176	Free Cancellation	Rating 7.1 11,847 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $193	Free Cancellation	Rating 8.0 467 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $222	Free Cancellation	Rating 7.3 10,463 reviews	Search United Airlines flights
American Airlines	PriceFrom $223	Free Cancellation	Rating 7.0 12,223 reviews	Search American Airlines flights

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Chicago to Ontario flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Chicago and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Chicago to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Region of Ontario 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 12/3

Thu 12/10

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 Ontario

Popular cities

Other flights from Chicago

Other flights to Ontario

Airlines

Complete your trip

Feeling lucky

Popular cities in Ontario

Flights to Torontofrom $132

Flights to Vancouverfrom $133

Flights to Montrealfrom $225

Flights to Calgaryfrom $108

Flights to Ottawafrom $237

Flights to Halifaxfrom $311

Flights to Winnipegfrom $310

Flights to Québec Cityfrom $428

Flights to Kelownafrom $257

Flights to St. John'sfrom $430

Flights to Saskatoonfrom $347

Flights to Reginafrom $331

Cheap flights from Chicago to Ontario from $123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ontario departing on 1/27. 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 Chicago to Ontario

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 Chicago to Region of Ontario

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

Lufthansa flights from Chicago to Region of Ontario

Our best Lufthansa deals on Chicago to Region of Ontario flight tickets

momondo Fare Finder

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

See travel insights to Ontario from

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

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

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

What is the cheapest Chicago to Ontario flight route?

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

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

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

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

What airlines fly to Region of Ontario?

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

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

Cheap Chicago to Region of Ontario flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Region of Ontario

Frequently asked questions about flying from Chicago to Ontario

Best airlines flying from Chicago to Region of Ontario

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

Why use momondo?

An easier way to manage your Region of Ontario 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 Ontario

Popular cities in Ontario

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

Chicago flight routes

According to popular flight searches on momondo this year

Region of Ontario flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Ontario

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

Complete your trip to Ontario

Explore popular destinations other users love

According to popular flight searches on momondo this year