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O'Hare Intl

$122+ Cheap flights from Ontario to O'Hare Intl (ORD)

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap 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 December 21, 2025.

This Air Canada deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:45 pmYYZ - ORD
Nonstop2h 00mAir Canada
Tue 2/32:00 pmORD - YYZ
Nonstop1h 39mAir Canada
Deal found 12/18$328
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 pmYYZ - ORD
Nonstop2h 05mUnited Airlines
Mon 1/124:50 pmORD - YYZ
Nonstop1h 55mUnited Airlines
Deal found 12/20$353
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:09 pmYYZ - ORD
1 stop6h 13mWestJet
Sun 1/116:50 amORD - YYZ
1 stop3h 30mWestJet
Deal found 12/20$358
This Air Canada deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/282:15 pmYYZ - ORD
Nonstop1h 55mAir Canada
Wed 2/47:15 amORD - YYZ
1 stop5h 25mAir Canada
Deal found 12/18$362
This United Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 amYYZ - ORD
Nonstop2h 05mUnited Airlines
Tue 2/36:05 amORD - YYZ
1 stop4h 43mUnited Airlines
Deal found 12/18$363
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:15 pmYYZ - ORD
1 stop4h 21mMultiple Airlines
Tue 1/137:20 amORD - YYZ
1 stop10h 42mMultiple Airlines
Deal found 12/20$366
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:40 pmYYZ - ORD
1 stop5h 04mUnited Airlines
Fri 1/99:15 pmORD - YYZ
Nonstop1h 44mUnited Airlines
Deal found 12/20$368
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:00 amYYZ - ORD
Nonstop2h 05mUnited Airlines
Wed 1/79:02 amORD - YYZ
1 stop7h 47mUnited Airlines
Deal found 12/20$370
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:40 pmYYZ - ORD
1 stop5h 55mUnited Airlines
Mon 1/51:37 pmORD - YYZ
1 stop6h 47mUnited Airlines
Deal found 12/20$376
This Air Canada deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:00 amYYZ - ORD
Nonstop2h 05mAir Canada
Sun 2/18:00 amORD - YYZ
Nonstop1h 40mAir Canada
Deal found 12/18$380
This Kiwi.com deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:10 pmYUL - ORD
1 stop16h 21mMultiple Airlines
Sun 1/1810:41 pmORD - YUL
2 stops31h 24mMultiple Airlines
Deal found 12/19$380
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:15 pmYYZ - ORD
1 stop4h 21mWestJet
Sun 1/116:50 amORD - YYZ
1 stop3h 30mWestJet
Deal found 12/20$387

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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(Kiwi.com)

One-way from

$122
(American Airlines)

Popular in

December

Cheapest in

July

Average price

$321

Good round-trip deal

$421 or less

Good one-way deal

$263 or less
Provider with most accurate pricing for Toronto (YTO)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Toronto (YTO)-Chicago (CHI) flights.
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From Ontario to Chicago O'Hare Intl
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One-way flight from Ontario to Chicago O'Hare Intl
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Highest demand for flights based on searches. 10% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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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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 2,558,603 searches. Data last updated December 21, 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

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 2/5

3:50 pm-5:50 pm

Nonstop3h 00m

Chicago O'Hare Intl

Sun 2/8

11:50 am-3:08 pm

Nonstop2h 18m

$194

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 2/14

6:25 pm-8:10 pm

Nonstop2h 45m

Chicago O'Hare Intl

Mon 2/16

7:15 am-10:20 am

Nonstop2h 05m

$196

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Wed 2/4

11:30 am-12:25 pm

Nonstop1h 55m

Chicago O'Hare Intl

Wed 2/11

6:00 am-11:59 am

1 stop4h 59m

$198

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 2/17

10:05 am-1:20 pm

1 stop4h 15m

Chicago O'Hare Intl

Fri 2/27

6:30 am-11:18 am

1 stop3h 48m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 2/20

5:15 pm-8:44 pm

1 stop4h 29m

Chicago O'Hare Intl

Fri 2/27

6:30 am-11:18 am

1 stop3h 48m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sun 2/15

6:30 am-11:45 am

1 stop6h 15m

Chicago O'Hare Intl

Thu 2/26

6:30 am-11:18 am

1 stop3h 48m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 2/14

5:15 pm-8:44 pm

1 stop4h 29m

Chicago O'Hare Intl

Sun 2/22

6:15 am-3:59 pm

1 stop8h 44m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Mon 2/16

7:45 am-1:20 pm

1 stop6h 35m

Chicago O'Hare Intl

Wed 2/25

10:35 am-7:09 pm

1 stop7h 34m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 2/19

5:10 pm-10:05 pm

1 stop5h 55m

Chicago O'Hare Intl

Thu 2/26

6:30 am-11:18 am

1 stop3h 48m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 2/17

10:05 am-1:20 pm

1 stop4h 15m

Chicago O'Hare Intl

Sun 2/22

10:35 am-4:10 pm

1 stop4h 35m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

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, April is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of $82). Flying from Region of Ontario to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $193). 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 December 21, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 33% on flights from Region of Ontario to Chicago O'Hare Intl Airport by exploring options for tickets 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 December 16, 2024.

Travelers seeking maximum savings on their Region of Ontario to Chicago O'Hare Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday 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 December 21, 2025.

The most flights from CAON to ORD are scheduled on a Friday (61 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (34 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?

    There are many flights that can get you from Region of Ontario to Chicago O'Hare Intl Airport in 2h 45m. Fly via American Airlines, Air Canada, or Delta to get the fastest option. Airlines will cover a distance of 745 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Region of Ontario to Chicago O'Hare Intl Airport are United Airlines ($109), Air Canada ($110), and Porter Airlines ($122).

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

    The most popular route from Region of Ontario to Chicago O'Hare Intl Airport is Toronto Pearson Intl - Chicago O'Hare Intl. You may also consider Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl or Toronto Island - Chicago O'Hare Intl.

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

    Before booking your flight to Chicago O'Hare Intl Airport from Region of Ontario, check out the most reliable airlines to get you to your destination on time: EVA Air (83%), Japan Airlines (80%), Egyptair( 78%).

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

    On average you can expect to pay $1,110 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is $129 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at $186.

  • 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, April is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of $82). Flying from Region of Ontario to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $193). 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

Traveling 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
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

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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
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Vancouver Intl to O'Hare Intl flights
Toronto Island to Midway flights
Pearson Intl to Midway flights
Ottawa to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Midway flights
Calgary to O'Hare Intl flights
Vancouver Intl to Midway flights
Toronto Island to O'Hare Intl flights
Ottawa to Midway flights
Winnipeg to O'Hare Intl flights
Québec City to O'Hare Intl flights
Abbotsford to O'Hare Intl flights
Calgary to Midway flights
Winnipeg to Midway flights
Saskatoon to O'Hare Intl flights
Halifax to Midway flights
Hamilton to O'Hare Intl flights
Edmonton to O'Hare Intl flights
Regina to O'Hare Intl flights
Victoria to O'Hare Intl flights
Halifax to O'Hare Intl flights
Québec City to Midway flights
London to O'Hare Intl flights
Edmonton to Midway flights
Kelowna to O'Hare Intl flights
Comox to O'Hare Intl flights
Moncton to O'Hare Intl flights
Nanaimo to O'Hare Intl flights
Grande Prairie to O'Hare Intl flights
Medicine Hat to O'Hare Intl flights
London to Midway flights
Victoria to Midway flights
St John to O'Hare Intl flights
St. John's to Midway flights

Top 4 airlines flying from Ontario to O'Hare Intl

Discover the top 4 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 2,558,603 searches. Data last updated December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$148Average$405FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$165Average$401FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$180Average$423FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$195Average$345FlexibilityNo cancel feeOn-time71%

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