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Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 115

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 28/11. 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.
American Airlines Logo
6:06 a.m. - 11:54 a.m.ORD-YYZ
4h 48m1 stop
American Airlines Logo
6:24 p.m. - 7:24 p.m.YYZ-ORD
2h 00mdirect
C$ 271American Airlines
Find Deal
Tue, 2 Dec - Thu, 4 Dec
American Airlines Logo
2:55 p.m. - 5:44 p.m.ORD-YYZ
1h 49mdirect
American Airlines Logo
6:00 a.m. - 11:03 a.m.YYZ-ORD
6h 03m1 stop
C$ 280American Airlines
Find Deal
Fri, 5 Dec - Sun, 7 Dec
Multiple Airlines Logo
6:05 a.m. - 2:20 p.m.ORD-YYZ
7h 15m1 stop
Multiple Airlines Logo
12:15 p.m. - 9:00 p.m.YYZ-ORD
33h 45m3 stops
C$ 287Multiple Airlines
Find Deal
Fri, 9 Jan - Sun, 11 Jan
Air Canada Logo
8:15 p.m. - 10:54 p.m.ORD-YYZ
1h 39mdirect
Air Canada Logo
7:00 a.m. - 11:18 a.m.YYZ-ORD
5h 18m1 stop
C$ 288Air Canada
Find Deal
Fri, 5 Dec - Sun, 7 Dec
Air Canada Logo
2:00 p.m. - 4:39 p.m.ORD-YYZ
1h 39mdirect
Air Canada Logo
6:30 p.m. - 7:30 p.m.YYZ-ORD
2h 00mdirect
C$ 290Air Canada
Find Deal
Sat, 15 Nov - Mon, 17 Nov
United Airlines Logo
4:40 p.m. - 7:24 p.m.ORD-YYZ
1h 44mdirect
United Airlines Logo
9:00 p.m. - 9:59 p.m.YYZ-ORD
1h 59mdirect
C$ 291United Airlines
Find Deal
Sat, 7 Mar - Sun, 8 Mar
Multiple Airlines Logo
9:10 p.m. - 11:59 p.m.ORD-YYZ
1h 49mdirect
Multiple Airlines Logo
6:30 p.m. - 7:30 p.m.YYZ-ORD
2h 00mdirect
C$ 294Multiple Airlines
Find Deal
Wed, 17 Dec - Sun, 18 Jan
United Airlines Logo
6:00 a.m. - 2:36 p.m.ORD-YUL
7h 36m1 stop
United Airlines Logo
4:45 p.m. - 6:51 p.m.YUL-ORD
3h 06mdirect
C$ 295United Airlines
Find Deal
Mon, 12 Jan - Mon, 12 Jan
Delta Logo
8:50 a.m. - 4:15 p.m.ORD-YYZ
6h 25m1 stop
Delta Logo
6:05 a.m. - 10:00 a.m.YYZ-ORD
4h 55m1 stop
C$ 326Delta
Find Deal
Fri, 5 Dec - Sun, 7 Dec
Delta Logo
5:50 a.m. - 5:04 p.m.ORD-YUL
10h 14m1 stop
Delta Logo
6:00 a.m. - 9:35 a.m.YUL-ORD
4h 35m1 stop
C$ 330Delta
Find Deal
Thu, 12 Feb - Sun, 15 Feb

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
2 Dec
ORD6:06 a.m.Chicago O'Hare Intl
4h 48m
1 stop
YYZ11:54 a.m.Toronto Pearson Intl
4 Dec
YYZ6:24 p.m.Toronto Pearson Intl
2h 00m
ORD7:24 p.m.Chicago O'Hare Intl
C$ 271
Find similar
American Airlines
5 Dec
ORD2:55 p.m.Chicago O'Hare Intl
1h 49m
YYZ5:44 p.m.Toronto Pearson Intl
7 Dec
YYZ6:00 a.m.Toronto Pearson Intl
6h 03m
1 stop
ORD11:03 a.m.Chicago O'Hare Intl
C$ 280
Find similar
American Airlines
2 Dec
ORD5:00 a.m.Chicago O'Hare Intl
5h 14m
1 stop
YYZ11:14 a.m.Toronto Pearson Intl
4 Dec
YYZ4:44 p.m.Toronto Pearson Intl
8h 02m
1 stop
ORD11:46 p.m.Chicago O'Hare Intl
C$ 292
Find similar

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
5 Dec
ORD8:15 p.m.Chicago O'Hare Intl
1h 39m
YYZ10:54 p.m.Toronto Pearson Intl
7 Dec
YYZ7:00 a.m.Toronto Pearson Intl
5h 18m
1 stop
ORD11:18 a.m.Chicago O'Hare Intl
C$ 288
Find similar
Air Canada
15 Nov
ORD2:00 p.m.Chicago O'Hare Intl
1h 39m
YYZ4:39 p.m.Toronto Pearson Intl
17 Nov
YYZ6:30 p.m.Toronto Pearson Intl
2h 00m
ORD7:30 p.m.Chicago O'Hare Intl
C$ 290
Find similar
Air Canada
5 Dec
ORD8:00 a.m.Chicago O'Hare Intl
1h 40m
YYZ10:40 a.m.Toronto Pearson Intl
7 Dec
YYZ6:20 a.m.Toronto Pearson Intl
5h 58m
1 stop
ORD11:18 a.m.Chicago O'Hare Intl
C$ 295
Find similar

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 96,600 searches. Data last updated 27 October 2025.
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

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 2/12

6:06 a.m.-11:54 a.m.

1 stop4h 48m

Toronto Pearson Intl

Thu 4/12

6:24 p.m.-7:24 p.m.

Nonstop2h 00m

C$ 271

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 5/12

2:55 p.m.-5:44 p.m.

Nonstop1h 49m

Toronto Pearson Intl

Sun 7/12

6:00 a.m.-11:03 a.m.

1 stop6h 03m

C$ 280

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 9/1

6:05 a.m.-2:20 p.m.

1 stop7h 15m

Toronto Pearson Intl

Sun 11/1

12:15 p.m.-9:00 p.m.

3 stops33h 45m

C$ 287

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 5/12

8:15 p.m.-10:54 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Sun 7/12

7:00 a.m.-11:18 a.m.

1 stop5h 18m

C$ 288

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 15/11

2:00 p.m.-4:39 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Mon 17/11

6:30 p.m.-7:30 p.m.

Nonstop2h 00m

C$ 290

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 7/3

4:40 p.m.-7:24 p.m.

Nonstop1h 44m

Toronto Pearson Intl

Sun 8/3

9:00 p.m.-9:59 p.m.

Nonstop1h 59m

C$ 291

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 17/12

9:10 p.m.-11:59 p.m.

Nonstop1h 49m

Toronto Pearson Intl

Sun 18/1

6:30 p.m.-7:30 p.m.

Nonstop2h 00m

C$ 294

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 12/1

6:00 a.m.-2:36 p.m.

1 stop7h 36m

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

4:45 p.m.-6:51 p.m.

Nonstop3h 06m

C$ 295

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 5/12

8:50 a.m.-4:15 p.m.

1 stop6h 25m

Toronto Pearson Intl

Sun 7/12

6:05 a.m.-10:00 a.m.

1 stop4h 55m

C$ 326

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 12/2

5:50 a.m.-5:04 p.m.

1 stop10h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

6:00 a.m.-9:35 a.m.

1 stop4h 35m

C$ 330

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?

In general, July is the cheapest month to fly from Chicago O'Hare Intl Airport to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 334. If you are unable to visit Region of Ontario during the month of July, then departing from Chicago O'Hare Intl Airport during the month September is also very affordable. Most momondo users find prices during this month for around C$ 339.

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

The cheapest day to depart from Chicago O'Hare Intl Airport to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 317. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 516.

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

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from Chicago O'Hare Intl Airport to Region of Ontario during this time can be as low as C$ 313. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 474 on average. Flights to Region of Ontario from Chicago O'Hare Intl Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 to Region of 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 C$ 430 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 C$ 232 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Ontario flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 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

C$ 142

Fastest flight time

1h 39m

Direct flights

Every day

Airports in Region of Ontario

1 airport
The best one-way flight to Region of Ontario from Chicago O'Hare Intl Airport in the past 72 hours is C$ 142. 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 C$ 415.
The fastest flight from Chicago O'Hare Intl Airport to Region of Ontario takes 1h 39m
Direct flights go from Chicago O'Hare Intl Airport to Region of Ontario every day.
There is 1 airport near Region of Ontario: Toronto Pearson Intl (YYZ)
Search flight deals

  • 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 are refreshed on a daily basis.

  • 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 C$ 206Free CancellationRating
7.1
10,370 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 264Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Chicago.

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

Yes. momondo enables you to select and highlight flights to Ontario from Chicago with this policy.

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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Find better results for your trip to Ontario

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