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Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 159

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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap 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 15 September 2025.

Round-trip from

C$ 271

One-way from

C$ 159

Popular in

December

Cheapest in

July

Average price

C$ 351

Good round-trip deal

C$ 542 or less

Good one-way deal

C$ 319 or less
20/10-23/10
  • 20/10-23/10
  • 2 total stops
  • 15h 58m total
  • Ontario to Chicago
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WestJet
  • WestJet
  • 17/10
  • 1 total stop
  • 11h 43m total
  • Ontario to Chicago
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Highest demand for flights based on searches. 8% potential increase in price (C$ 42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Ontario to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Ontario to Chicago O'Hare Intl.
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Find flight deals from Ontario to O'Hare Intl

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 15 September 2025.

Mon 20/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Thu 23/1012:53 p.m.ORD - YYZ
1 stop7h 14mMultiple Airlines
Deal found 14/9C$ 271
Mon 20/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Wed 22/107:43 p.m.ORD - YYZ
1 stop17h 22mMultiple Airlines
Deal found 15/9C$ 275
Sun 19/104:00 p.m.YYZ - ORD
1 stop24h 49mMultiple Airlines
Thu 23/107:43 p.m.ORD - YYZ
1 stop17h 22mMultiple Airlines
Deal found 15/9C$ 279
Mon 20/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Thu 30/107:06 p.m.ORD - YYZ
1 stop25h 01mMultiple Airlines
Deal found 13/9C$ 280
Mon 20/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Thu 6/116:06 p.m.ORD - YYZ
1 stop26h 01mMultiple Airlines
Deal found 14/9C$ 282
Mon 20/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Fri 24/107:20 p.m.ORD - YYZ
1 stop24h 47mMultiple Airlines
Deal found 13/9C$ 283
Mon 13/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Thu 23/107:43 p.m.ORD - YYZ
1 stop17h 22mMultiple Airlines
Deal found 15/9C$ 285
Mon 3/114:00 p.m.YYZ - ORD
1 stop7h 39mMultiple Airlines
Thu 13/116:06 p.m.ORD - YYZ
1 stop26h 01mMultiple Airlines
Deal found 13/9C$ 286
Thu 23/106:00 a.m.YKF - ORD
1 stop11h 43mWestJet
Mon 27/102:20 p.m.ORD - YKF
1 stop14h 08mWestJet
Deal found 14/9C$ 286
Sun 19/104:00 p.m.YYZ - ORD
1 stop24h 49mMultiple Airlines
Fri 24/105:05 a.m.ORD - YYZ
1 stop8h 00mMultiple Airlines
Deal found 14/9C$ 290
Mon 13/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Fri 24/105:05 a.m.ORD - YYZ
1 stop8h 00mMultiple Airlines
Deal found 15/9C$ 291
Fri 24/106:00 a.m.YKF - ORD
1 stop11h 43mWestJet
Sun 26/102:20 p.m.ORD - YKF
1 stop14h 08mWestJet
Deal found 13/9C$ 311

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 15 September 2025.
Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Ontario

Fly to

O'Hare Intl

Route

Depart

Return

Price

TorontoChicago

YKF - ORD

YKFORD

Toronto Region of Waterloo Intl

Thu 23/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Mon 27/10

2:20 p.m.-5:28 a.m.

1 stop14h 08m

C$ 286

TorontoChicago

YKF - ORD

YKFORD

Toronto Region of Waterloo Intl

Fri 24/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sun 26/10

2:20 p.m.-5:28 a.m.

1 stop14h 08m

C$ 311

TorontoChicago

YKF - ORD

YKFORD

Toronto Region of Waterloo Intl

Fri 24/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Mon 27/10

2:20 p.m.-5:28 a.m.

1 stop14h 08m

C$ 345

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Sat 18/10

3:25 p.m.-8:17 p.m.

1 stop5h 52m

Chicago O'Hare Intl

Sat 25/10

8:40 a.m.-2:45 p.m.

1 stop5h 05m

C$ 347

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 25/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sun 26/10

2:20 p.m.-5:17 p.m.

1 stop25h 57m

C$ 354

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 23/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sun 26/10

2:20 p.m.-5:17 p.m.

1 stop25h 57m

C$ 354

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 17/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sun 26/10

2:20 p.m.-5:17 p.m.

1 stop25h 57m

C$ 355

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 28/11

6:00 a.m.-8:00 a.m.

Nonstop3h 00m

Chicago O'Hare Intl

Sun 30/11

7:15 a.m.-10:20 a.m.

Nonstop2h 05m

C$ 359

TorontoChicago

YKF - ORD

YKFORD

Toronto Region of Waterloo Intl

Fri 17/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sat 18/10

5:30 p.m.-12:45 a.m.

1 stop30h 15m

C$ 361

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

Chicago O'Hare Intl

Sat 11/10

2:35 p.m.-10:06 p.m.

1 stop6h 31m

C$ 373

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 60 results
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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$ 261). Flying from Region of Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 348). 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 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Chicago O'Hare Intl Airport as you normally would.

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 15 September 2025.

The most flights from CAON to ORD are scheduled on a Monday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (52 on average).

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

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 46m. WestJet provides one of the quickest options available for as low as C$ 373. Region of Ontario and Chicago O'Hare Intl Airport are separated by a distance of 1199 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$ 160 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from C$ 214 and C$ 217, 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 EVA Air (83%), SkyWest Airlines (83%) or ANA (83%) 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$ 1,648 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is C$ 240 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at C$ 271.

  • 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$ 261). Flying from Region of Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 348). 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
Evanston
Des Plaines
Elk Grove Village
Skokie
Downers Grove
Naperville
Bolingbrook
Romeoville

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Alternative routes for Ontario to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to O'Hare Intl flights
Vancouver Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pearson Intl to Midway flights
Toronto Island to Midway flights
Pierre Elliott Trudeau Intl to Midway flights
Vancouver Intl to Midway flights
Calgary to O'Hare Intl flights
Québec City to O'Hare Intl flights
Toronto Island to O'Hare Intl flights
Ottawa to O'Hare Intl flights
Halifax to O'Hare Intl flights
Calgary to Midway flights
Winnipeg to O'Hare Intl flights
Québec City to Midway flights
Edmonton to O'Hare Intl flights
Ottawa to Midway flights
Halifax to Midway flights
Victoria to O'Hare Intl flights
Edmonton to Midway flights
Region of Waterloo Intl to O'Hare Intl flights
Nanaimo to O'Hare Intl flights
Saskatoon to O'Hare Intl flights
Kelowna to O'Hare Intl flights
London to O'Hare Intl flights
Kelowna to Midway flights
Victoria to Midway flights
Hamilton to O'Hare Intl flights
Saskatoon to Midway flights
Regina to O'Hare Intl flights
St. John's to O'Hare Intl flights
Sudbury to O'Hare Intl flights
St John to O'Hare Intl flights
Grande Prairie to O'Hare Intl flights
Grande Prairie to Midway flights
Moncton to O'Hare Intl flights
Kingston to O'Hare Intl flights
Comox to O'Hare Intl flights
Fort McMurray to O'Hare Intl flights
Deer Lake to O'Hare Intl flights

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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 196AverageC$ 263FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 264AverageC$ 498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 267AverageC$ 496FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 278AverageC$ 552FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 382AverageC$ 584FlexibilityNo 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?

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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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