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

628 flights are operational weekly from Chicago to Region of Ontario as of November 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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 39% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 4 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?

American Airlines, Porter Airlines, and Air Canada 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 November 2025, 89 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 36% of daily flights taking off at noon.

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 4 operators available for flights from Chicago to Ontario as of November 2025.

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.

$86 Cheap Flights from Chicago to Ontario in 2025/26

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8:10 am - 10:56 amORD-YYZ

1h 46mnonstop

6:00 am - 7:15 amYYZ-ORD

2h 15mnonstop

$184American Airlines

Find Deal

Sat, Dec 13 - Sun, Dec 14

8:30 pm - 11:09 pmORD-YYZ

1h 39mnonstop

9:00 pm - 10:05 pmYYZ-ORD

2h 05mnonstop

$185Air Canada

Find Deal

Thu, Jan 8 - Sun, Jan 11

11:00 am - 1:42 pmMDW-YTZ

1h 42mnonstop

9:15 am - 10:05 amYTZ-MDW

1h 50mnonstop

$187Porter Airlines

Find Deal

Tue, Jan 6 - Thu, Jan 8

11:00 am - 1:42 pmMDW-YTZ

1h 42mnonstop

9:15 am - 10:05 amYTZ-MDW

1h 50mnonstop

$189Porter Airlines

Find Deal

Mon, Jan 26 - Fri, Jan 30

2:00 pm - 4:39 pmORD-YYZ

1h 39mnonstop

12:15 pm - 8:54 pmYYZ-ORD

33h 39m3 stops

$189Multiple Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

1:00 pm - 7:48 pmORD-YUL

5h 48m1 stop

4:45 pm - 6:51 pmYUL-ORD

3h 06mnonstop

$191United Airlines

Find Deal

Mon, Jan 26 - Sat, Jan 31

8:22 pm - 2:40 pmORD-YYZ

17h 18m1 stop

12:15 pm - 8:54 pmYYZ-ORD

33h 39m3 stops

$193Multiple Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

6:00 pm - 9:17 pmORD-YUL

2h 17mnonstop

2:13 pm - 11:43 pmYUL-ORD

10h 30m1 stop

$196United Airlines

Find Deal

Sun, Feb 15 - Mon, Feb 23

6:00 am - 3:16 pmORD-YUL

8h 16m1 stop

3:00 pm - 10:59 pmYUL-ORD

8h 59m1 stop

$203Lufthansa

Find Deal

Thu, Jan 8 - Mon, Jan 12

8:52 am - 3:16 pmORD-YUL

5h 24m1 stop

4:45 pm - 6:51 pmYUL-ORD

3h 06mnonstop

$205Lufthansa

Find Deal

Thu, Jan 8 - Mon, Jan 12

Lufthansa flights from Chicago to Region of Ontario

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

Lufthansa

Jan 8

ORD6:28 pmChicago O'Hare Intl

1h 53m

YYZ9:21 pmToronto Pearson Intl

Jan 11

YYZ9:00 pmToronto Pearson Intl

2h 05m

ORD10:05 pmChicago O'Hare Intl

$191

Find similar

Lufthansa

Jan 8

ORD4:50 pmChicago O'Hare Intl

1h 55m

YYZ7:45 pmToronto Pearson Intl

Jan 11

YYZ9:00 pmToronto Pearson Intl

2h 05m

ORD10:05 pmChicago O'Hare Intl

$193

Find similar

Lufthansa

Jan 8

ORD6:00 amChicago O'Hare Intl

8h 16m

1 stop

YUL3:16 pmMontreal Pierre Elliott Trudeau Intl

Jan 12

YUL3:00 pmMontreal Pierre Elliott Trudeau Intl

8h 59m

1 stop

ORD10:59 pmChicago O'Hare Intl

$203

Find similar

Delta flights from Chicago to Region of Ontario

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

Delta

Jan 8

ORD9:35 amChicago O'Hare Intl

9h 51m

1 stop

YYZ8:26 pmToronto Pearson Intl

Jan 11

YYZ6:00 amToronto Pearson Intl

8h 08m

1 stop

ORD1:08 pmChicago O'Hare Intl

$233

Find similar

Delta

Feb 14

MDW4:13 pmChicago Midway

6h 46m

1 stop

YUL11:59 pmMontreal Pierre Elliott Trudeau Intl

Feb 21

YUL6:00 amMontreal Pierre Elliott Trudeau Intl

7h 48m

1 stop

MDW12:48 pmChicago Midway

$236

Find similar

Delta

Nov 24

ORD10:30 amChicago O'Hare Intl

8h 59m

1 stop

YYZ8:29 pmToronto Pearson Intl

Dec 1

YYZ12:08 pmToronto Pearson Intl

7h 18m

1 stop

ORD6:26 pmChicago O'Hare Intl

$434

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Fly from

Fly to

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 12/13

8:10 am-10:56 am

Nonstop1h 46m

Toronto Pearson Intl

Sun 12/14

6:00 am-7:15 am

Nonstop2h 15m

$184

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 1/8

8:30 pm-11:09 pm

Nonstop1h 39m

Toronto Pearson Intl

Sun 1/11

9:00 pm-10:05 pm

Nonstop2h 05m

$185

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Tue 1/6

11:00 am-1:42 pm

Nonstop1h 42m

Toronto Island

Thu 1/8

9:15 am-10:05 am

Nonstop1h 50m

$187

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Mon 1/26

11:00 am-1:42 pm

Nonstop1h 42m

Toronto Island

Fri 1/30

9:15 am-10:05 am

Nonstop1h 50m

$189

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 1/8

2:00 pm-4:39 pm

Nonstop1h 39m

Toronto Pearson Intl

Sun 1/11

12:15 pm-8:54 pm

3 stops33h 39m

$189

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 1/26

1:00 pm-7:48 pm

1 stop5h 48m

Montreal Pierre Elliott Trudeau Intl

Sat 1/31

4:45 pm-6:51 pm

Nonstop3h 06m

$191

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 1/8

8:22 pm-2:40 pm

1 stop17h 18m

Toronto Pearson Intl

Sun 1/11

12:15 pm-8:54 pm

3 stops33h 39m

$193

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 2/15

6:00 pm-9:17 pm

Nonstop2h 17m

Montreal Pierre Elliott Trudeau Intl

Mon 2/23

2:13 pm-11:43 pm

1 stop10h 30m

$196

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 1/8

6:00 am-3:16 pm

1 stop8h 16m

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

3:00 pm-10:59 pm

1 stop8h 59m

$203

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 1/8

8:52 am-3:16 pm

1 stop5h 24m

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

4:45 pm-6:51 pm

Nonstop3h 06m

$205

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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

Airlines

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 $209. 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 $234.

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 $602. 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 $767. 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 morning. momondo users have found flights departing from Chicago to Region of Ontario in the morning for as low as $591. 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 $760.

What is the cheapest Chicago to Ontario flight route?

Fly from Chicago O'Hare Intl to Toronto Pearson Intl 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 $306 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 $166 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	$191
Fastest flight time	1h 39m
Direct flights	Every day
Airports in Region of Ontario	2 airports

The best one-way flight to Region of Ontario from Chicago in the past 72 hours is $191. The best round-trip flight deal from Chicago to Region of Ontario found on momondo in the last 72 hours is $287.

The fastest flight from Chicago to Region of Ontario takes 1h 39m

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

There are 2 airports near Region of Ontario: 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 4 operators available for flights from Chicago to Ontario as of November 2025.
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 Embraer 175 (Enhanced Winglets), making up 18.38% of the total bookings. Other popular models include De Havilland (Bombardier) DHC-8-400 Dash 8Q with 17.19%, Embraer 175 with 10.84%, and Embraer 170 with 6.40%.

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
Air Canada	PriceFrom $117	Free Cancellation	Rating 7.1 10,462 reviews	Search Air Canada flights
United Airlines	PriceFrom $146	Free Cancellation	Rating 7.4 9,020 reviews	Search United Airlines flights
Porter Airlines	PriceFrom $185	Free Cancellation	Rating 8.0 392 reviews	Search Porter Airlines flights
American Airlines	PriceFrom $220	Free Cancellation	Rating 7.2 11,047 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.

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Find better results for your trip to Ontario

Popular cities in Ontario

Flights to Torontofrom $61

Flights to Vancouverfrom $79

Flights to Montrealfrom $158

Flights to Calgaryfrom $144

Flights to Ottawafrom $158

Flights to Halifaxfrom $232

Flights to Winnipegfrom $135

Flights to Québec Cityfrom $274

Flights to Saskatoonfrom $167

Flights to Vancouverfrom $78

Flights to Kelownafrom $144

Flights to St. John'sfrom $340

Cheap flights from Chicago to Ontario from $86

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 12/8. 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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Lufthansa flights from Chicago to Region of Ontario

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

Delta flights from Chicago to Region of Ontario

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

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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

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?

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

How far in advance should I book a flight to Region of Ontario?

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.

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

American Airlines, Porter Airlines, and Air Canada are the most popular carriers operating 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?

As of November 2025, 89 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 36% of daily flights taking off at noon.

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

628 flights are operational weekly from Chicago to Region of Ontario as of November 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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

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

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

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

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

What is the most popular plane model from Chicago to 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?

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

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

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

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

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