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Cheap flights from Chicago O'Hare Intl Airport to Ontario from $97

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 O'Hare Intl Airport to Ontario departing on 9/22. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
11:45 am - 2:25 pm
ORD
-
YTZ
1h 40mnonstop
Porter Airlines Logo
8:40 pm - 9:35 pm
YTZ
-
ORD
1h 55mnonstop
$218Porter Airlines
Tue, Sep 22 - Thu, Sep 24
Porter Airlines Logo
11:45 am - 2:25 pm
ORD
-
YTZ
1h 40mnonstop
Porter Airlines Logo
8:40 pm - 9:35 pm
YTZ
-
ORD
1h 55mnonstop
$220Porter Airlines
Tue, Sep 1 - Tue, Sep 8
Porter Airlines Logo
11:45 am - 2:25 pm
ORD
-
YTZ
1h 40mnonstop
Porter Airlines Logo
10:05 am - 11:00 am
YTZ
-
ORD
1h 55mnonstop
$223Porter Airlines
Thu, Sep 3 - Mon, Sep 7
Air Canada Logo
7:25 am - 10:06 am
ORD
-
YTZ
1h 41mnonstop
Air Canada Logo
7:20 pm - 8:16 pm
YTZ
-
ORD
1h 56mnonstop
$226Air Canada
Thu, Jun 18 - Fri, Jun 19
Air Canada Logo
7:25 am - 10:06 am
ORD
-
YTZ
1h 41mnonstop
Air Canada Logo
12:15 pm - 1:10 pm
YTZ
-
ORD
1h 55mnonstop
$227Air Canada
Wed, Jun 3 - Wed, Jun 10
Porter Airlines Logo
7:00 am - 9:40 am
ORD
-
YTZ
1h 40mnonstop
Porter Airlines Logo
1:40 pm - 2:35 pm
YTZ
-
ORD
1h 55mnonstop
$228Porter Airlines
Fri, Sep 25 - Sun, Sep 27
Multiple Airlines Logo
7:25 am - 2:54 pm
ORD
-
YOW
6h 29m
1 stop
Multiple Airlines Logo
8:40 am - 8:16 pm
YOW
-
ORD
12h 36m
1 stop
$454Multiple Airlines
Thu, Jun 11 - Mon, Jun 15
Multiple Airlines Logo
8:40 pm - 8:05 am
ORD
-
YOW
10h 25m
1 stop
Multiple Airlines Logo
6:55 am - 7:47 pm
YOW
-
ORD
13h 52m
1 stop
$476Multiple Airlines
Sat, Jun 20 - Sat, Jun 27
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$608WestJet
Sat, May 23 - Tue, May 26
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$632WestJet
Sat, May 23 - Tue, May 26

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

Our best American Airlines deals on Chicago O'Hare Intl Airport to Region of Ontario flight tickets
American Airlines
Jun 6
ORD1:19 pmChicago O'Hare Intl
8h 11m
1 stop
YYZ10:30 pmToronto Pearson Intl
Jun 7
YYZ7:25 amToronto Pearson Intl
2h 10m
ORD8:35 amChicago O'Hare Intl
$288
American Airlines
May 23
ORD8:30 pmChicago O'Hare Intl
1h 54m
YYZ11:24 pmToronto Pearson Intl
May 24
YYZ7:24 pmToronto Pearson Intl
5h 35m
1 stop
ORD11:59 pmChicago O'Hare Intl
$294
American Airlines
Jun 9
ORD9:45 amChicago O'Hare Intl
1h 50m
YYZ12:35 pmToronto Pearson Intl
Jun 16
YYZ1:15 pmToronto Pearson Intl
2h 05m
ORD2:20 pmChicago O'Hare Intl
$302

Air Canada flights from Chicago O'Hare Intl Airport to Region of Ontario

Our best Air Canada deals on Chicago O'Hare Intl Airport to Region of Ontario flight tickets
Air Canada
Jun 18
ORD7:25 amChicago O'Hare Intl
1h 41m
YTZ10:06 amToronto Island
Jun 19
YTZ7:20 pmToronto Island
1h 56m
ORD8:16 pmChicago O'Hare Intl
$226
Air Canada
Jun 3
ORD7:25 amChicago O'Hare Intl
1h 41m
YTZ10:06 amToronto Island
Jun 10
YTZ12:15 pmToronto Island
1h 55m
ORD1:10 pmChicago O'Hare Intl
$227
Air Canada
May 28
ORD9:55 amChicago O'Hare Intl
1h 40m
YYZ12:35 pmToronto Pearson Intl
May 31
YYZ6:40 pmToronto Pearson Intl
2h 00m
ORD7:40 pmChicago O'Hare Intl
$229

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Region of Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 10, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 9/22

11:45 am-2:25 pm

Nonstop1h 40m

Toronto Island

Thu 9/24

8:40 pm-9:35 pm

Nonstop1h 55m

$218

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 9/1

11:45 am-2:25 pm

Nonstop1h 40m

Toronto Island

Tue 9/8

8:40 pm-9:35 pm

Nonstop1h 55m

$220

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 9/3

11:45 am-2:25 pm

Nonstop1h 40m

Toronto Island

Mon 9/7

10:05 am-11:00 am

Nonstop1h 55m

$223

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 6/18

7:25 am-10:06 am

Nonstop1h 41m

Toronto Island

Fri 6/19

7:20 pm-8:16 pm

Nonstop1h 56m

$226

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Wed 6/3

7:25 am-10:06 am

Nonstop1h 41m

Toronto Island

Wed 6/10

12:15 pm-1:10 pm

Nonstop1h 55m

$227

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Fri 9/25

7:00 am-9:40 am

Nonstop1h 40m

Toronto Island

Sun 9/27

1:40 pm-2:35 pm

Nonstop1h 55m

$228

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 6/11

7:25 am-2:54 pm

1 stop6h 29m

Ottawa

Mon 6/15

8:40 am-8:16 pm

1 stop12h 36m

$454

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 6/20

8:40 pm-8:05 am

1 stop10h 25m

Ottawa

Sat 6/27

6:55 am-7:47 pm

1 stop13h 52m

$476

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

5:30 pm-5:20 am

1 stop10h 50m

London

Tue 5/26

6:10 am-4:40 pm

1 stop11h 30m

$608

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

5:30 pm-5:20 am

1 stop10h 50m

London

Tue 5/26

6:10 am-4:40 pm

1 stop11h 30m

$632

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ontario from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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?

The month of November is, on average, the cheapest month to fly to Region of Ontario from Chicago O'Hare Intl Airport, with most prices found around $58. If you aren’t able to travel during the month of November, then book flights to Region of Ontario from Chicago O'Hare Intl Airport during May instead. Flights to Region of Ontario in May, while not as cheap as those in November, still average around $69.

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 O'Hare Intl Airport. The lowest ticket price found for a Thursday departure recently was $426. 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 O'Hare Intl Airport to Region of Ontario on a Sunday will generally be more expensive and average around $729. 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 O'Hare Intl Airport to Region of Ontario in the evening for as low as $410. 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 $742.

What is the cheapest Chicago O'Hare Intl to Ontario flight route?

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

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Ontario?

You are more likely to see cheaper flights to Region of Ontario from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $305 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 O'Hare Intl Airport for as low as $203 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to Region of Ontario.

Cheap Chicago O'Hare Intl Airport to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Region of Ontario

Best Price Found

$157

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Region of Ontario

125 airports
The best one-way flight to Region of Ontario from Chicago O'Hare Intl Airport in the past 72 hours is $157. The best round-trip flight deal from Chicago O'Hare Intl Airport to Region of Ontario found on momondo in the last 72 hours is $234.
The fastest flight from Chicago O'Hare Intl Airport to Region of Ontario takes 1h 35m
Direct flights go from Chicago O'Hare Intl Airport to Region of Ontario every day.
There are 125 airports in Region of Ontario. From Chicago O'Hare Intl Airport there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Ontario

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ontario?

    Prices for flights from Chicago O'Hare Intl Airport to Ontario were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ontario?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Ontario?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Region of Ontario?

Best airlines flying from Chicago O'Hare Intl Airport to Region of Ontario

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $97Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
United AirlinesPriceFrom $147Free CancellationRating
7.4
9,700 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $160Free CancellationRating
7.5
1,034 reviews
Search Qantas Airways flights
WestJetPriceFrom $170Free CancellationRating
7.2
3,332 reviews
Search WestJet flights
American AirlinesPriceFrom $213Free CancellationRating
7.1
11,668 reviews
Search American Airlines flights
Porter AirlinesPriceFrom $294Free CancellationRating
8.0
436 reviews
Search Porter Airlines flights

Why use momondo?

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

Finding the right flight to Ontario from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

Flights from Chicago to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Chicago.

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

Yes momondo offers price alerts on flights to Ontario from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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