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Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 184

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
11 Sep — 18 Sep1
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 12 August 2026.

Thu 10/96:50 p.m. -
Nonstop1h 58m
Sun 13/98:40 p.m. -
Nonstop1h 46m
Deal found 7/8C$ 277
Wed 2/94:00 p.m. -
1 stop5h 05m
Wed 9/98:40 p.m. -
Nonstop1h 46m
Deal found 11/8C$ 279
Thu 10/912:15 p.m. -
Nonstop2h 06m
Sun 13/97:25 a.m. -
Nonstop1h 42m
Deal found 7/8C$ 279
Thu 24/912:25 p.m. -
Nonstop1h 58m
Sun 27/93:40 p.m. -
1 stop5h 13m
Deal found 11/8C$ 280
Sat 12/94:00 p.m. -
1 stop5h 12m
Tue 15/93:40 p.m. -
1 stop5h 13m
Deal found 9/8C$ 281
Sat 12/97:35 p.m. -
Nonstop2h 06m
Tue 15/97:25 a.m. -
Nonstop1h 42m
Deal found 7/8C$ 281
Tue 8/97:35 p.m. -
Nonstop2h 06m
Tue 15/92:00 p.m. -
Nonstop1h 42m
Deal found 10/8C$ 283
Sat 29/810:45 a.m. -
1 stop5h 10m
Tue 1/92:00 p.m. -
Nonstop1h 42m
Deal found 7/8C$ 286
Tue 8/912:15 p.m. -
Nonstop2h 06m
Mon 14/92:00 p.m. -
Nonstop1h 42m
Deal found 7/8C$ 287
Tue 8/92:00 p.m. -
Nonstop1h 55m
Tue 15/99:55 a.m. -
Nonstop1h 45m
Deal found 9/8C$ 288
Fri 11/912:15 p.m. -
Nonstop2h 06m
Mon 14/92:00 p.m. -
Nonstop1h 42m
Deal found 9/8C$ 288
Tue 15/910:30 a.m. -
1 stop5h 22m
Sat 19/93:40 p.m. -
1 stop5h 13m
Deal found 10/8C$ 291

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 12 August 2026.

Round-trip from

C$ 277

One-way from

C$ 184

Popular in

July

Cheapest in

September

Average price

C$ 387

Good round-trip deal

C$ 349 or less

Good one-way deal

C$ 204 or less
Air Canada
  • Air Canada
  • 10/9-13/9
  • Nonstop
  • 3h 44m total
  • Ontario to Chicago
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Air Canada
  • Air Canada
  • 15/9
  • 1 total stop
  • 7h 22m total
  • Ontario to Chicago
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease (C$ 5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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.
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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 12 August 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 Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 10/9

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

Nonstop2h 00m

Chicago O'Hare Intl

Sun 13/9

8:40 p.m.-11:26 p.m.

Nonstop1h 46m

C$ 332

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 10/9

8:50 a.m.-9:53 a.m.

Nonstop2h 03m

Chicago O'Hare Intl

Sun 13/9

5:53 p.m.-8:44 p.m.

Nonstop1h 51m

C$ 333
Quickest round-trip

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 10/9

5:15 p.m.-6:18 p.m.

Nonstop2h 03m

Chicago O'Hare Intl

Sat 19/9

9:18 p.m.-11:59 p.m.

Nonstop1h 41m

C$ 334

TorontoChicago

YTZ Toronto Island - ORD Chicago O'Hare Intl

YTZORD

Toronto Island

Thu 10/9

8:20 a.m.-12:00 p.m.

1 stop4h 40m

Chicago O'Hare Intl

Sun 13/9

7:25 a.m.-10:07 a.m.

Nonstop1h 42m

C$ 338

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Tue 8/9

4:05 p.m.-8:30 p.m.

1 stop5h 25m

Chicago O'Hare Intl

Thu 10/9

5:10 p.m.-10:59 p.m.

1 stop4h 49m

C$ 341

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Fri 25/9

2:24 p.m.-8:30 p.m.

1 stop7h 06m

Chicago O'Hare Intl

Mon 28/9

8:55 a.m.-5:20 p.m.

1 stop7h 25m

C$ 341

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Thu 10/9

7:43 p.m.-11:40 p.m.

1 stop4h 57m

Chicago O'Hare Intl

Sat 12/9

12:55 p.m.-7:02 p.m.

1 stop5h 07m

C$ 341

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Mon 14/9

9:00 p.m.-10:05 p.m.

Nonstop2h 05m

Chicago O'Hare Intl

Wed 16/9

7:05 a.m.-1:47 p.m.

1 stop5h 42m

C$ 344

TorontoChicago

YYZ Toronto Pearson Intl - ORD Chicago O'Hare Intl

YYZORD

Toronto Pearson Intl

Wed 26/8

12:09 p.m.-4:17 p.m.

1 stop5h 08m

Chicago O'Hare Intl

Tue 8/9

1:55 p.m.-10:59 p.m.

1 stop8h 04m

C$ 376

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 3/2

4:55 p.m.-8:37 p.m.

1 stop4h 42m

Chicago O'Hare Intl

Sat 6/2

5:45 p.m.-11:10 p.m.

1 stop4h 25m

C$ 397

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

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, February is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of C$ 397). Flying from Region of Ontario to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 468). 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 12 August 2026.

It’s optimal to fly from Region of Ontario to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 12% 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 12 August 2026.

The most flights from CAON to ORD are scheduled on a Tuesday (71 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 on average).

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

Airfare is below average for this route at the moment.
Region of Ontario to Chicago O'Hare Intl Airport flights typically cost between C$ 357 and C$ 570 in September.
The cheapest round-trip price found within the last 5 days was C$ 277 on Air Canada (10 Sep-13 Sep).

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 8 August 2026.

Travelers seeking maximum savings on their Region of Ontario to Chicago O'Hare Intl Airport flight should consider departing on Friday 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 2h 03m. United Airlines provides one of the quickest options available for as low as C$ 333. Region of Ontario and Chicago O'Hare Intl Airport are separated by a distance of 702 km. Both multi-stop and direct flights can be found to your destination and back.

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

    C$ 157 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and American Airlines, with prices starting from C$ 163 and C$ 166, 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 Egyptair (95%), Envoy Air (89%) or Japan Airlines (84%) 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$ 1,539 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is C$ 252 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at C$ 298.

  • 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, February is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of C$ 397). Flying from Region of Ontario to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 468). 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
Rockford
Naperville
Schaumburg

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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 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 135AverageC$ 694FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 224AverageC$ 517FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 252AverageC$ 421FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 286AverageC$ 589FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 354AverageC$ 462FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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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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