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Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 192

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
29 Jul — 5 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to O'Hare Intl
Explore the most affordable flight options available from Ontario to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 June 2026.

Fri 25/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sun 27/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 24/6C$ 285
Tue 1/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sat 5/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 24/6C$ 287
Mon 14/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Wed 16/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 28/6C$ 288
Sun 6/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Fri 11/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 25/6C$ 290
Fri 4/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Tue 8/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 25/6C$ 291
Fri 4/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sun 6/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 24/6C$ 292
Sat 19/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sat 26/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 27/6C$ 294
Wed 16/99:30 a.m.
YTZ
-
ORD
1 stop6h 22m
Air Canada
Wed 23/92:00 p.m.
ORD
-
YTZ
Nonstop1h 42m
Air Canada
Deal found 28/6C$ 297
Fri 2/107:25 p.m.
YTZ
-
ORD
Nonstop2h 04m
Air Canada
Mon 5/108:45 a.m.
ORD
-
YTZ
1 stop6h 05m
Air Canada
Deal found 27/6C$ 298
Wed 16/96:50 p.m.
YYZ
-
ORD
Nonstop1h 58m
Air Canada
Wed 23/92:15 p.m.
ORD
-
YYZ
Nonstop1h 46m
Air Canada
Deal found 28/6C$ 302
Sun 25/1010:10 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sat 31/106:10 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 27/6C$ 302
Thu 13/88:05 a.m.
YYZ
-
ORD
Nonstop1h 55m
Air Canada
Thu 20/83:45 p.m.
ORD
-
YYZ
Nonstop1h 45m
Air Canada
Deal found 29/6C$ 304

Find flight deals from Ontario to O'Hare Intl

Keep the following information in mind while searching for Ontario to O'Hare Intl flight deals. Data was last updated 29 June 2026.

Round-trip from

C$ 285

One-way from

C$ 192

Popular in

June

Cheapest in

September

Average price

C$ 417

Good round-trip deal

C$ 393 or less

Good one-way deal

C$ 207 or less
Porter Airlines
  • Porter Airlines
  • 25/9-27/9
  • Nonstop
  • 3h 35m total
  • Ontario to Chicago
Search Deals
Air Canada
  • Air Canada
  • 11/9
  • Nonstop
  • 1h 58m total
  • Ontario to Chicago
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Ontario to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to O'Hare Intl 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, Cheapflights users made 629,999 searches. Data last updated 29 June 2026.
Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 4/9

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 8/9

3:45 p.m.-6:30 p.m.

Nonstop1h 45m

C$ 316
Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Sat 19/9

10:05 a.m.-11:00 a.m.

Nonstop1h 55m

Chicago O'Hare Intl

Mon 21/9

3:20 p.m.-6:00 p.m.

Nonstop1h 40m

C$ 342

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Sat 19/9

1:40 p.m.-2:35 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Sat 26/9

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

C$ 342

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 6/8

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 18/8

9:15 p.m.-11:59 p.m.

Nonstop1h 44m

C$ 343

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Wed 5/8

2:45 p.m.-3:50 p.m.

Nonstop2h 05m

Chicago O'Hare Intl

Sat 15/8

8:40 p.m.-11:24 p.m.

Nonstop1h 44m

C$ 343

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Tue 25/8

7:25 p.m.-8:29 p.m.

Nonstop2h 04m

Chicago O'Hare Intl

Tue 1/9

2:00 p.m.-4:42 p.m.

Nonstop1h 42m

C$ 356

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 18/9

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Mon 21/9

6:25 a.m.-2:19 p.m.

1 stop6h 54m

C$ 356

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 9/7

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sun 12/7

2:15 p.m.-5:01 p.m.

Nonstop1h 46m

C$ 379

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 1/8

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 4/8

3:45 p.m.-6:30 p.m.

Nonstop1h 45m

C$ 379

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 24/7

7:43 p.m.-11:31 p.m.

1 stop4h 48m

Chicago O'Hare Intl

Mon 3/8

7:09 a.m.-9:54 a.m.

Nonstop1h 45m

C$ 386

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Region of Ontario to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of C$ 72). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of C$ 260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to ORD?

Find hourly flight availability from Ontario to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 June 2026.

It’s optimal to fly from Region of Ontario to Chicago O'Hare Intl Airport in the morning. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from Region of Ontario to Chicago O'Hare Intl Airport

Explore weekly flight availability from Ontario to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 June 2026.

The most flights from CAON to ORD are scheduled on a Friday (71 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (34 on average).

How much does it cost to fly round-trip from Region of Ontario to Chicago O'Hare Intl Airport?

How far ahead should I book a flight from Region of Ontario to Chicago O'Hare Intl Airport?

The best time to book flights from Region of Ontario to Chicago O'Hare Intl Airport is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from Region of Ontario to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to O'Hare Intl. Price data was last updated on 20 June 2026.

Travelers seeking maximum savings on their Region of Ontario to Chicago O'Hare Intl Airport flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Ontario to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Region of Ontario to Chicago O'Hare Intl Airport?

    A quick flight from Region of Ontario to Chicago O'Hare Intl Airport can take about 1h 55m. Porter Airlines provides one of the quickest options available for as low as C$ 342. Region of Ontario and Chicago O'Hare Intl Airport are separated by a distance of 716 km. Generally, flights for this route are direct.

  • What are the cheapest airlines to fly from Region of Ontario to Chicago O'Hare Intl Airport one-way?

    C$ 158 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from C$ 160 and C$ 169, respectively.

  • What are the most popular routes from Region of Ontario to Chicago O'Hare Intl Airport?

    The most popular flight routes from Region of Ontario to Chicago O'Hare Intl Airport are Toronto Pearson Intl - Chicago O'Hare Intl, Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl and Toronto Island - Chicago O'Hare Intl.

  • What are the most reliable airlines from Region of Ontario to Chicago O'Hare Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Region of Ontario to Chicago O'Hare Intl Airport consider choosing Copa Airlines (100%), EVA Air (100%) or Qatar Airways (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Region of Ontario to Chicago O'Hare Intl Airport?

    On average you can expect to pay C$ 4,020 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is C$ 227 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at C$ 305.

  • Can I find deals for flights from Ontario to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to O'Hare Intl.

  • Can I find deals for business class flights from Ontario to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Ontario to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Chicago O'Hare Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of C$ 72). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of C$ 260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Northbrook
Evanston
Des Plaines
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
Schaumburg

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Ontario to O'Hare Intl

Discover the top 5 airlines that operate flights from Ontario to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 29 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 137AverageC$ 607FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 229AverageC$ 526FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 256AverageC$ 428FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 270AverageC$ 540FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 379AverageC$ 488FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to O'Hare Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to O'Hare Intl from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to O'Hare Intl with no change fees?

Certainly. Search results for flights to O'Hare Intl from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to O'Hare Intl become cheaper?

Yes! Start tracking prices for Ontario to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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