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Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 171

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
24 Apr — 1 May1
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 25 March 2026.

Mon 4/56:30 p.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Mon 11/53:40 p.m.
ORD
-
YUL
Nonstop2h 24m
Air Canada
Deal found 20/3C$ 260
Thu 4/64:30 p.m.
YUL
-
ORD
1 stop4h 46m
Air Canada
Sun 7/67:25 a.m.
ORD
-
YUL
1 stop5h 20m
Air Canada
Deal found 22/3C$ 263
Sat 11/49:15 a.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 12/48:40 a.m.
ORD
-
YUL
Nonstop2h 11m
Air Canada
Deal found 21/3C$ 264
Thu 16/49:15 a.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 19/412:50 p.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 23/3C$ 265
Thu 18/67:20 p.m.
YTZ
-
ORD
Nonstop1h 56m
Air Canada
Sun 21/67:25 a.m.
ORD
-
YTZ
Nonstop1h 41m
Air Canada
Deal found 24/3C$ 271
Sat 25/74:00 p.m.
YYZ
-
ORD
1 stop5h 05m
Air Canada
Wed 29/79:50 a.m.
ORD
-
YYZ
Nonstop1h 45m
Air Canada
Deal found 24/3C$ 272
Wed 1/72:00 p.m.
YYZ
-
ORD
Nonstop1h 55m
Air Canada
Sat 4/78:45 a.m.
ORD
-
YYZ
1 stop6h 25m
Air Canada
Deal found 24/3C$ 274
Thu 9/710:50 a.m.
YTZ
-
ORD
1 stop5h 05m
Air Canada
Mon 13/711:05 a.m.
ORD
-
YTZ
1 stop5h 46m
Air Canada
Deal found 24/3C$ 274
Fri 1/56:30 p.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 3/58:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 25/3C$ 275
Thu 10/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sun 13/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 24/3C$ 276
Wed 9/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Wed 16/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 22/3C$ 279
Mon 25/51:55 p.m.
YYZ
-
ORD
Nonstop2h 00m
Air Canada
Fri 19/68:40 p.m.
ORD
-
YYZ
Nonstop1h 46m
Air Canada
Deal found 21/3C$ 282

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 25 March 2026.

Round-trip from

C$ 260

One-way from

C$ 171

Popular in

December

Cheapest in

July

Average price

C$ 371

Good round-trip deal

C$ 497 or less

Good one-way deal

C$ 274 or less
Air Canada
  • Air Canada
  • 4/5-11/5
  • Nonstop
  • 5h 02m total
  • Ontario to Chicago
Search Deals
Air Canada
  • Air Canada
  • 23/4
  • Nonstop
  • 2h 38m total
  • Ontario to Chicago
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 33 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 March 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 25 March 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

YTZ - ORD

YTZORD

Toronto Island

Thu 18/6

7:20 p.m.-8:16 p.m.

Nonstop1h 56m

Chicago O'Hare Intl

Sun 21/6

7:25 a.m.-10:06 a.m.

Nonstop1h 41m

C$ 271

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 11/4

9:45 a.m.-11:37 a.m.

Nonstop2h 52m

Chicago O'Hare Intl

Mon 13/4

7:13 a.m.-10:40 a.m.

Nonstop2h 27m

C$ 275

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

9:45 a.m.-11:20 a.m.

Nonstop2h 35m

Chicago O'Hare Intl

Fri 12/6

5:00 a.m.-1:09 p.m.

1 stop7h 09m

C$ 289

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 16/7

12:45 p.m.-11:26 p.m.

1 stop11h 41m

Chicago O'Hare Intl

Mon 20/7

9:40 p.m.-10:04 a.m.

1 stop11h 24m

C$ 294

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 7/5

2:20 p.m.-8:14 p.m.

1 stop6h 54m

Chicago O'Hare Intl

Sun 10/5

7:00 a.m.-11:19 a.m.

1 stop3h 19m

C$ 308

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 23/6

2:29 p.m.-6:29 p.m.

1 stop5h 00m

Chicago O'Hare Intl

Sat 27/6

12:46 p.m.-11:14 p.m.

1 stop9h 28m

C$ 308

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 18/7

2:24 p.m.-8:31 p.m.

1 stop7h 07m

Chicago O'Hare Intl

Mon 27/7

2:07 p.m.-11:02 p.m.

1 stop7h 55m

C$ 309

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 30/5

6:10 a.m.-7:50 a.m.

Nonstop2h 40m

Chicago O'Hare Intl

Wed 3/6

6:30 a.m.-2:40 p.m.

1 stop7h 10m

C$ 314

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

5:00 p.m.-6:52 p.m.

Nonstop2h 52m

Chicago O'Hare Intl

Sat 25/4

7:00 a.m.-1:09 p.m.

1 stop5h 09m

C$ 315

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 6/6

7:43 p.m.-11:26 p.m.

1 stop4h 43m

Chicago O'Hare Intl

Tue 9/6

5:00 a.m.-11:43 a.m.

1 stop5h 43m

C$ 318

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

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$ 176). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of C$ 292). 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 25 March 2026.

It’s optimal to fly from Region of Ontario to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

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 14 March 2026.

Travelers seeking maximum savings on their Region of Ontario to Chicago O'Hare Intl Airport flight should consider departing on Monday mornings 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.

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 25 March 2026.

The most flights from CAON to ORD are scheduled on a Wednesday (63 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (23 on average).

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 56m. Air Canada provides one of the quickest options available for as low as C$ 271. Region of Ontario and Chicago O'Hare Intl Airport are separated by a distance of 716 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$ 148 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$ 155 and C$ 164, 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 Emirates (100%), Copa Airlines (85%) or Republic Airways (75%) 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$ 1,258 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is C$ 223 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at C$ 283.

  • 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$ 176). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of C$ 292). 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
Skokie
Downers Grove
Elk Grove Village
Racine
Naperville
Bolingbrook
Romeoville
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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 221AverageC$ 290FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 223AverageC$ 413FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 244AverageC$ 475FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 263AverageC$ 483FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 367AverageC$ 472FlexibilityNo 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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