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 40% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 7 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?

Porter Airlines, United 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 week?

626 flights are operational weekly from Chicago to Region of Ontario as of August 2026. The most popular departure day for this route is Fri, with 19% 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 August 2026, 89 flights take off from Chicago and land in Region of Ontario each day. The most common flight departure time for this route is 10:00AM, with 39% 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 7 operators available for flights from Chicago to Ontario as of August 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.

$106 Cheap Flights from Chicago to Ontario in 2026

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.

11:45 am - 2:25 pm

MDW

YTZ

1h 40mnonstop

1:45 pm - 2:35 pm

YTZ

MDW

1h 50mnonstop

$236Porter Airlines

Wed, Sep 2 - Sat, Sep 5

3:20 pm - 6:00 pm

MDW

YTZ

1h 40mnonstop

1:45 pm - 2:35 pm

YTZ

MDW

1h 50mnonstop

$236Porter Airlines

Fri, Sep 25 - Mon, Sep 28

5:35 pm - 8:18 pm

ORD

YYZ

1h 43mnonstop

12:25 pm - 1:23 pm

YYZ

ORD

1h 58mnonstop

$237Air Canada

Thu, Sep 10 - Sun, Sep 13

9:55 am - 12:40 pm

ORD

YYZ

1h 45mnonstop

4:00 pm - 8:12 pm

YYZ

ORD

5h 12m

1 stop

$238Air Canada

Thu, Sep 10 - Thu, Sep 10

10:47 am - 1:42 pm

ORD

YYZ

1h 55mnonstop

4:00 pm - 8:12 pm

YYZ

ORD

5h 12m

1 stop

$238Multiple Airlines

Tue, Sep 22 - Tue, Sep 22

9:15 pm - 11:59 pm

ORD

YYZ

1h 44mnonstop

2:45 pm - 3:51 pm

YYZ

ORD

2h 06mnonstop

$240United Airlines

Mon, Aug 24 - Wed, Sep 2

4:38 pm - 7:40 pm

ORD

YYZ

2h 02mnonstop

5:27 pm - 6:30 pm

YYZ

ORD

2h 03mnonstop

$240United Airlines

Tue, Aug 25 - Fri, Aug 28

2:51 pm - 5:44 pm

ORD

YYZ

1h 53mnonstop

7:15 pm - 8:20 pm

YYZ

ORD

2h 05mnonstop

$240American Airlines

Thu, Sep 17 - Mon, Sep 21

8:30 pm - 11:26 pm

ORD

YYZ

1h 56mnonstop

6:30 am - 7:40 am

YYZ

ORD

2h 10mnonstop

$240American Airlines

Sat, Sep 19 - Mon, Sep 21

9:18 pm - 11:59 pm

ORD

YYZ

1h 41mnonstop

12:25 pm - 1:23 pm

YYZ

ORD

1h 58mnonstop

$240Multiple Airlines

Tue, Sep 22 - Sat, Sep 26

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United Airlines flights from Chicago to Region of Ontario

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

United Airlines

Aug 23

ORD8:50 amChicago O'Hare Intl

1h 59m

YYZ11:49 amToronto Pearson Intl

Aug 28

YYZ7:00 amToronto Pearson Intl

2h 00m

ORD8:00 amChicago O'Hare Intl

$240

United Airlines

Sep 8

ORD5:53 pmChicago O'Hare Intl

1h 51m

YYZ8:44 pmToronto Pearson Intl

Sep 14

YYZ10:15 amToronto Pearson Intl

2h 06m

ORD11:21 amChicago O'Hare Intl

$241

United Airlines

Sep 10

ORD7:09 amChicago O'Hare Intl

1h 45m

YYZ9:54 amToronto Pearson Intl

Sep 10

YYZ12:45 pmToronto Pearson Intl

7h 50m

1 stop

ORD7:35 pmChicago O'Hare Intl

$245

KLM flights from Chicago to Region of Ontario

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

KLM

Aug 27

MDW9:24 amChicago Midway

7h 00m

1 stop

YYZ5:24 pmToronto Pearson Intl

Aug 30

YYZ6:10 amToronto Pearson Intl

7h 29m

1 stop

MDW12:39 pmChicago Midway

$258

KLM

Aug 22

MDW9:24 amChicago Midway

4h 56m

1 stop

YYZ3:20 pmToronto Pearson Intl

Aug 23

YYZ12:09 pmToronto Pearson Intl

7h 24m

1 stop

MDW6:33 pmChicago Midway

$293

KLM

Aug 22

MDW9:24 amChicago Midway

4h 56m

1 stop

YYZ3:20 pmToronto Pearson Intl

Aug 23

YYZ12:09 pmToronto Pearson Intl

7h 24m

1 stop

MDW6:33 pmChicago Midway

$295

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 9/2

11:45 am-2:25 pm

Nonstop1h 40m

Toronto Island

Sat 9/5

1:45 pm-2:35 pm

Nonstop1h 50m

$236

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Fri 9/25

3:20 pm-6:00 pm

Nonstop1h 40m

Toronto Island

Mon 9/28

1:45 pm-2:35 pm

Nonstop1h 50m

$236

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/10

5:35 pm-8:18 pm

Nonstop1h 43m

Toronto Pearson Intl

Sun 9/13

12:25 pm-1:23 pm

Nonstop1h 58m

$237

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/10

9:55 am-12:40 pm

Nonstop1h 45m

Toronto Pearson Intl

Thu 9/10

4:00 pm-8:12 pm

1 stop5h 12m

$238

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 9/22

10:47 am-1:42 pm

Nonstop1h 55m

Toronto Pearson Intl

Tue 9/22

4:00 pm-8:12 pm

1 stop5h 12m

$238

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 8/24

9:15 pm-11:59 pm

Nonstop1h 44m

Toronto Pearson Intl

Wed 9/2

2:45 pm-3:51 pm

Nonstop2h 06m

$240

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 8/25

4:38 pm-7:40 pm

Nonstop2h 02m

Toronto Pearson Intl

Fri 8/28

5:27 pm-6:30 pm

Nonstop2h 03m

$240

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/17

2:51 pm-5:44 pm

Nonstop1h 53m

Toronto Pearson Intl

Mon 9/21

7:15 pm-8:20 pm

Nonstop2h 05m

$240

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 9/19

8:30 pm-11:26 pm

Nonstop1h 56m

Toronto Pearson Intl

Mon 9/21

6:30 am-7:40 am

Nonstop2h 10m

$240

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 9/22

9:18 pm-11:59 pm

Nonstop1h 41m

Toronto Pearson Intl

Sat 9/26

12:25 pm-1:23 pm

Nonstop1h 58m

$240

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 $284. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from Chicago during November instead. Flights to Region of Ontario in November, while not as cheap as those in February, still average around $292.

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 $422. 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 $666. 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 $437. 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 $780.

What is the cheapest Chicago to Ontario flight route?

Fly from Chicago O'Hare Intl 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 $330 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 $285 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?

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	$110
Fastest flight time	1h 38m
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 $110. The best round-trip flight deal from Chicago to Region of Ontario found on momondo in the last 72 hours is $238.

The fastest flight from Chicago to Region of Ontario takes 1h 38m

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 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 7 operators available for flights from Chicago to Ontario as of August 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 20.23% of the total bookings. Other popular models include Embraer 175 with 12.14%, Boeing 787-8 Dreamliner with 10.50%, and Embraer 175 (Enhanced Winglets) with 7.33%.

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 8,493 reviews	Search Delta flights
Air Canada	PriceFrom $119	Free Cancellation	Rating 7.1 11,419 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $160	Free Cancellation	Rating 7.5 1,074 reviews	Search Qantas Airways flights
WestJet	PriceFrom $170	Free Cancellation	Rating 7.2 3,424 reviews	Search WestJet flights
Porter Airlines	PriceFrom $174	Free Cancellation	Rating 8.0 449 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $220	Free Cancellation	Rating 7.4 10,061 reviews	Search United Airlines flights
American Airlines	PriceFrom $223	Free Cancellation	Rating 7.1 11,846 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.

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Popular cities in Ontario

Flights to Torontofrom $168

Flights to Vancouverfrom $129

Flights to Montrealfrom $227

Flights to Calgaryfrom $157

Flights to Ottawafrom $234

Flights to Halifaxfrom $278

Flights to Winnipegfrom $258

Flights to Québec Cityfrom $323

Flights to Kelownafrom $242

Flights to Saskatoonfrom $291

Flights to St. John'sfrom $355

Flights to Reginafrom $321

Cheap flights from Chicago to Ontario from $106

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 9/21. 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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United Airlines flights from Chicago to Region of Ontario

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

KLM flights from Chicago to Region of Ontario

Our best KLM 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

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

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