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

654 flights are operational weekly from Chicago to Region of Ontario as of March 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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

United Airlines, Porter Airlines, and Delta are the most popular carriers operating from Chicago to Ontario

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

As of March 2026, 93 flights take off from Chicago and land in Region of Ontario each day. The most common flight departure time for this route is 6:00PM, with 35% of daily flights taking off in the evening.

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 41% 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.

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 March 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.

$82 Cheap Flights from Chicago to Ontario in 2026

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:50 pm - 4:05 pm

ORD

YUL

2h 15mnonstop

6:30 pm - 8:05 pm

YUL

ORD

2h 35mnonstop

$200Air Canada

Thu, Apr 16 - Mon, Apr 20

4:05 pm - 10:45 pm

MDW

YUL

5h 40m

1 stop

6:50 am - 10:15 am

YUL

MDW

4h 25m

1 stop

$202Porter Airlines

Fri, Apr 24 - Mon, Apr 27

12:50 pm - 4:05 pm

ORD

YUL

2h 15mnonstop

9:15 am - 1:05 pm

YUL

ORD

4h 50m

1 stop

$202Air Canada

Thu, Apr 16 - Sun, Apr 19

11:00 am - 5:45 pm

MDW

YUL

5h 45m

1 stop

6:50 am - 10:15 am

YUL

MDW

4h 25m

1 stop

$204Porter Airlines

Mon, Apr 13 - Thu, Apr 16

7:55 am - 1:21 pm

ORD

YUL

4h 26m

1 stop

7:00 am - 1:05 pm

YUL

ORD

7h 05m

1 stop

$205Air Canada

Thu, Apr 16 - Sun, Apr 19

11:00 am - 1:42 pm

MDW

YTZ

1h 42mnonstop

9:25 am - 10:15 am

YTZ

MDW

1h 50mnonstop

$207Porter Airlines

Thu, Apr 23 - Thu, Apr 30

9:23 am - 6:31 pm

MDW

YYZ

8h 08m

1 stop

9:49 am - 12:42 pm

YYZ

MDW

3h 53m

1 stop

$293Delta

Thu, May 7 - Sun, May 10

9:35 am - 3:08 pm

MDW

YYZ

4h 33m

1 stop

6:20 am - 12:29 pm

YYZ

MDW

7h 09m

1 stop

$314Delta

Tue, Mar 31 - Mon, Apr 6

5:30 pm - 5:20 am

ORD

YXU

10h 50m

1 stop

6:10 am - 4:40 pm

YXU

ORD

11h 30m

1 stop

$397WestJet

Mon, May 25 - Thu, May 28

5:30 pm - 5:20 am

ORD

YXU

10h 50m

1 stop

6:10 am - 4:40 pm

YXU

ORD

11h 30m

1 stop

$437WestJet

Sun, Apr 26 - Sun, May 3

American Airlines flights from Chicago to Region of Ontario

Our best American Airlines deals on Chicago to Region of Ontario flight tickets

American Airlines

Apr 30

ORD11:48 amChicago O'Hare Intl

1h 45m

YYZ2:33 pmToronto Pearson Intl

May 4

YYZ6:27 pmToronto Pearson Intl

2h 05m

ORD7:32 pmChicago O'Hare Intl

$269

American Airlines

Apr 16

ORD6:00 amChicago O'Hare Intl

5h 00m

1 stop

YYZ12:00 pmToronto Pearson Intl

Apr 20

YYZ6:15 amToronto Pearson Intl

2h 10m

ORD7:25 amChicago O'Hare Intl

$277

American Airlines

May 7

ORD9:50 amChicago O'Hare Intl

1h 45m

YYZ12:35 pmToronto Pearson Intl

May 11

YYZ7:15 amToronto Pearson Intl

7h 58m

1 stop

ORD2:13 pmChicago O'Hare Intl

$283

Delta flights from Chicago to Region of Ontario

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

Delta

Apr 3

MDW9:35 amChicago Midway

5h 18m

1 stop

YUL3:53 pmMontreal Pierre Elliott Trudeau Intl

Apr 7

YUL6:00 amMontreal Pierre Elliott Trudeau Intl

7h 29m

1 stop

MDW12:29 pmChicago Midway

$261

Delta

Apr 2

ORD7:10 amChicago O'Hare Intl

3h 13m

1 stop

YYZ11:23 amToronto Pearson Intl

Apr 7

YYZ6:20 amToronto Pearson Intl

3h 50m

1 stop

ORD9:10 amChicago O'Hare Intl

$293

Delta

Mar 31

MDW9:35 amChicago Midway

4h 33m

1 stop

YYZ3:08 pmToronto Pearson Intl

Apr 5

YYZ6:20 amToronto Pearson Intl

7h 09m

1 stop

MDW12:29 pmChicago Midway

$314

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 4/16

12:50 pm-4:05 pm

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 4/20

6:30 pm-8:05 pm

Nonstop2h 35m

$200

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 4/24

4:05 pm-10:45 pm

1 stop5h 40m

Montreal Pierre Elliott Trudeau Intl

Mon 4/27

6:50 am-10:15 am

1 stop4h 25m

$202

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 4/16

12:50 pm-4:05 pm

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 4/19

9:15 am-1:05 pm

1 stop4h 50m

$202

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Mon 4/13

11:00 am-5:45 pm

1 stop5h 45m

Montreal Pierre Elliott Trudeau Intl

Thu 4/16

6:50 am-10:15 am

1 stop4h 25m

$204

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 4/16

7:55 am-1:21 pm

1 stop4h 26m

Montreal Pierre Elliott Trudeau Intl

Sun 4/19

7:00 am-1:05 pm

1 stop7h 05m

$205

Quickest round-trip

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 4/23

11:00 am-1:42 pm

Nonstop1h 42m

Toronto Island

Thu 4/30

9:25 am-10:15 am

Nonstop1h 50m

$207

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Thu 5/7

9:23 am-6:31 pm

1 stop8h 08m

Toronto Pearson Intl

Sun 5/10

9:49 am-12:42 pm

1 stop3h 53m

$293

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Tue 3/31

9:35 am-3:08 pm

1 stop4h 33m

Toronto Pearson Intl

Mon 4/6

6:20 am-12:29 pm

1 stop7h 09m

$314

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/25

5:30 pm-5:20 am

1 stop10h 50m

London

Thu 5/28

6:10 am-4:40 pm

1 stop11h 30m

$397

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 4/26

5:30 pm-5:20 am

1 stop10h 50m

London

Sun 5/3

6:10 am-4:40 pm

1 stop11h 30m

$437

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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

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Other information

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

The month of September is, on average, the cheapest month to fly to Region of Ontario from Chicago, with most prices found around $208. If you aren’t able to travel during the month of September, then book flights to Region of Ontario from Chicago during July instead. Flights to Region of Ontario in July, while not as cheap as those in September, still average around $239.

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 $483. 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 Sunday will generally be more expensive and average around $741. 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 $740.

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 to Region of 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 $291 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 $144 on momondo.

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

There are 4 cabin classes available to choose from on Chicago to 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?

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

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	$104
Fastest flight time	1h 40m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from Chicago in the past 72 hours is $104. The best round-trip flight deal from Chicago to Region of Ontario found on momondo in the last 72 hours is $181.

The fastest flight from Chicago to Region of Ontario takes 1h 40m

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

There are 123 airports in Region of Ontario. From Chicago there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).

Search flight deals

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 March 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 13.45% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 13.29%, Embraer 170 with 10.85%, and Embraer 175 with 9.29%.

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 7.9 8,283 reviews	Search Delta flights
Air Canada	PriceFrom $105	Free Cancellation	Rating 7.1 10,800 reviews	Search Air Canada flights
United Airlines	PriceFrom $145	Free Cancellation	Rating 7.4 9,419 reviews	Search United Airlines flights
WestJet	PriceFrom $170	Free Cancellation	Rating 7.2 3,292 reviews	Search WestJet flights
Porter Airlines	PriceFrom $172	Free Cancellation	Rating 8.0 423 reviews	Search Porter Airlines flights
American Airlines	PriceFrom $213	Free Cancellation	Rating 7.1 11,444 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

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Popular cities in Ontario

Flights to Torontofrom $136

Flights to Vancouverfrom $122

Flights to Montrealfrom $187

Flights to Calgaryfrom $212

Flights to Ottawafrom $250

Flights to Halifaxfrom $252

Flights to Winnipegfrom $205

Flights to Québec Cityfrom $342

Flights to Kelownafrom $216

Flights to Saskatoonfrom $234

Flights to St. John'sfrom $311

Flights to Reginafrom $296

Cheap flights from Chicago to Ontario from $82

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 5/13. 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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American Airlines flights from Chicago to Region of Ontario

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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 to Region of Ontario?

What cabin class options are available on Chicago to 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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Region of 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

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According to popular flight searches on momondo this year

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