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Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 175

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
10 jun — 17 jun1
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 11 maio 2026.

qua 2/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
seg 7/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 8/5C$ 278
qua 23/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
sáb 26/911:45 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/5C$ 279
qui 10/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
seg 14/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/5C$ 280
ter 1/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
sáb 5/97:00 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 9/5C$ 282
seg 7/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
seg 14/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 283
ter 15/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
qui 17/911:45 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 8/5C$ 286
qui 10/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
dom 13/911:45 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 289
sex 4/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
ter 8/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 290
ter 8/910:05 a.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
seg 14/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 291
ter 1/98:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
qui 10/93:20 p.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 294
sáb 5/91:40 p.m.
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
sex 11/911:45 a.m.
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 10/5C$ 297
seg 1/612:15 p.m.
YTZ
-
ORD
Nonstop1h 55m
Air Canada
dom 7/67:25 a.m.
ORD
-
YTZ
Nonstop1h 41m
Air Canada
Deal found 9/5C$ 298

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 11 maio 2026.

Round-trip from

C$ 278

One-way from

C$ 175

Popular in

May

Cheapest in

July

Average price

C$ 382

Good round-trip deal

C$ 333 or less

Good one-way deal

C$ 206 or less
Porter Airlines
  • Porter Airlines
  • 2/9-7/9
  • Nonstop
  • 3h 35m total
  • Ontario to Chicago
Search Deals
Air Canada
  • Air Canada
  • 2/6
  • Nonstop
  • 1h 56m total
  • Ontario to Chicago
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 11 maio 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
Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

qui 10/9

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

Nonstop1h 55m

Chicago O'Hare Intl

sex 11/9

7:00 a.m.-9:40 a.m.

Nonstop1h 40m

C$ 305

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

dom 6/9

8:40 p.m.-9:35 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

seg 14/9

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

Nonstop1h 40m

C$ 305

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

qua 23/9

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

Nonstop1h 55m

Chicago O'Hare Intl

dom 27/9

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

Nonstop1h 40m

C$ 339

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

ter 8/9

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

Nonstop1h 55m

Chicago O'Hare Intl

qui 24/9

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

Nonstop1h 40m

C$ 350

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

qua 3/6

10:00 a.m.-4:34 p.m.

1 stop7h 34m

Chicago O'Hare Intl

qua 10/6

8:52 a.m.-1:34 p.m.

1 stop3h 42m

C$ 362

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

qui 27/8

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

Nonstop2h 00m

Chicago O'Hare Intl

seg 31/8

9:22 p.m.-12:06 a.m.

Nonstop1h 44m

C$ 362

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

qui 18/6

12:09 p.m.-6:29 p.m.

1 stop7h 20m

Chicago O'Hare Intl

dom 21/6

7:01 a.m.-3:19 p.m.

1 stop7h 18m

C$ 362

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

qua 19/8

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

Nonstop2h 00m

Chicago O'Hare Intl

qua 26/8

12:59 p.m.-3:46 p.m.

Nonstop1h 47m

C$ 362

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

qui 28/5

12:09 p.m.-6:05 p.m.

1 stop6h 56m

Chicago O'Hare Intl

sáb 30/5

3:47 p.m.-11:14 p.m.

1 stop6h 27m

C$ 362

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

sex 11/9

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

Nonstop2h 00m

Chicago O'Hare Intl

seg 14/9

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

Nonstop1h 44m

C$ 372

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/5

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

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 90 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 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$ 70). Flying from Region of Ontario to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 216). 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 11 maio 2026.

It’s optimal to fly from Region of Ontario to Chicago O'Hare Intl Airport at noon. By choosing this option you can save up to 5% on the cost of your flight, compared to a flight in the afternoon.

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 9 May 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.

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 11 maio 2026.

The most flights from CAON to ORD are scheduled on a Monday (71 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (58 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 1h 55m. Porter Airlines provides one of the quickest options available for as low as C$ 305. 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$ 144 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$ 154 and C$ 163, 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 (100%), Copa Airlines (89%) or Japan Airlines (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$ 1,738 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is C$ 198 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at C$ 341.

  • 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$ 70). Flying from Region of Ontario to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 216). 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 11 maio 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 220AverageC$ 470FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 222AverageC$ 411FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 241AverageC$ 525FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 261AverageC$ 478FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 365AverageC$ 470FlexibilityNo 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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