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O'Hare Intl

$111+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 March 23, 2026.

This Trip.com deal was found by Cheapflights users on 3/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:30 pm
YUL
-
ORD
Nonstop2h 38m
Air Canada
Mon 5/113:40 pm
ORD
-
YUL
Nonstop2h 24m
Air Canada
Deal found 3/20$189
This Trip.com deal was found by Cheapflights users on 3/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:30 pm
YUL
-
ORD
1 stop4h 46m
Air Canada
Sun 6/77:25 am
ORD
-
YUL
1 stop5h 20m
Air Canada
Deal found 3/22$191
This Trip.com deal was found by Cheapflights users on 3/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:15 am
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 4/128:40 am
ORD
-
YUL
Nonstop2h 11m
Air Canada
Deal found 3/21$192
This Trip.com deal was found by Cheapflights users on 3/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:40 am
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 5/108:45 am
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 3/18$193
This Trip.com deal was found by Cheapflights users on 3/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:15 am
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 4/1912:50 pm
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 3/22$194
This Kissandfly.com deal was found by Cheapflights users on 3/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:20 pm
YUL
-
ORD
Nonstop2h 35m
Air Canada
Sun 4/128:40 am
ORD
-
YUL
Nonstop2h 11m
Air Canada
Deal found 3/19$196
This Air Canada deal was found by Cheapflights users on 3/22. 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.
Thu 6/187:20 pm
YTZ
-
ORD
Nonstop1h 56m
Air Canada
Sun 6/217:25 am
ORD
-
YTZ
Nonstop1h 41m
Air Canada
Deal found 3/22$197
This Air Canada deal was found by Cheapflights users on 3/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:15 am
YYZ
-
ORD
1 stop5h 01m
Air Canada
Wed 7/295:35 pm
ORD
-
YYZ
Nonstop1h 45m
Air Canada
Deal found 3/20$198
This Air Canada deal was found by Cheapflights users on 3/22. 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.
Thu 7/96:15 am
YYZ
-
ORD
1 stop5h 01m
Air Canada
Sun 7/129:50 am
ORD
-
YYZ
Nonstop1h 45m
Air Canada
Deal found 3/22$199
This United Airlines deal was found by Cheapflights users on 3/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:10 am
YUL
-
ORD
Nonstop2h 50m
United Airlines
Mon 5/257:10 am
ORD
-
YUL
Nonstop2h 30m
United Airlines
Deal found 3/19$200
This Justfly.com deal was found by Cheapflights users on 3/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:40 pm
YTZ
-
ORD
Nonstop1h 55m
Porter Airlines
Sun 9/1311:45 am
ORD
-
YTZ
Nonstop1h 40m
Porter Airlines
Deal found 3/22$201
This SmartFares deal was found by Cheapflights users on 3/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/129:15 am
YUL
-
ORD
1 stop4h 50m
Air Canada
Sun 5/38:45 am
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 3/18$202

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(Trip.com)

One-way from

$111
(SmartFares)

Popular in

December

Cheapest in

July

Average price

$270

Good round-trip deal

$312 or less

Good one-way deal

$195 or less
Provider with most accurate pricing for Toronto (YTO)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Chicago (CHI) flights.
Search Deals
From Ontario to Chicago O'Hare Intl
Search Deals
One-way flight from Ontario to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 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 2,558,603 searches. Data last updated March 23, 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 6/18

7:20 pm-8:16 pm

Nonstop1h 56m

Chicago O'Hare Intl

Sun 6/21

7:25 am-10:06 am

Nonstop1h 41m

$197

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 5/1

6:10 am-8:00 am

Nonstop2h 50m

Chicago O'Hare Intl

Mon 5/25

7:10 am-10:40 am

Nonstop2h 30m

$200

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

9:45 am-11:20 am

Nonstop2h 35m

Chicago O'Hare Intl

Fri 6/12

5:00 am-1:09 pm

1 stop7h 09m

$210

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 7/16

12:45 pm-11:26 pm

1 stop11h 41m

Chicago O'Hare Intl

Mon 7/20

9:40 pm-10:04 am

1 stop11h 24m

$214

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 7/10

2:15 pm-8:24 pm

1 stop7h 09m

Chicago O'Hare Intl

Mon 7/13

7:10 am-3:18 pm

1 stop7h 08m

$224

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 6/12

6:10 am-7:50 am

Nonstop2h 40m

Chicago O'Hare Intl

Mon 6/15

5:00 am-1:09 pm

1 stop7h 09m

$229

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/18

5:00 pm-6:52 pm

Nonstop2h 52m

Chicago O'Hare Intl

Sat 4/25

7:00 am-1:09 pm

1 stop5h 09m

$229

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/18

5:00 pm-6:52 pm

Nonstop2h 52m

Chicago O'Hare Intl

Tue 4/21

1:06 pm-10:06 pm

1 stop8h 00m

$229

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 4/9

9:45 am-11:37 am

Nonstop2h 52m

Chicago O'Hare Intl

Sun 4/12

5:00 am-1:09 pm

1 stop7h 09m

$229

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/18

12:42 pm-6:48 pm

1 stop7h 06m

Chicago O'Hare Intl

Wed 4/22

5:15 am-11:38 am

1 stop5h 23m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

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 $128). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of $212). 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 March 23, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from Region of Ontario to Chicago O'Hare Intl Airport by exploring options for tickets 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 March 14, 2026.

Travelers seeking maximum savings on their Region of Ontario to Chicago O'Hare Intl Airport flight should consider departing on Thursday evenings 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 March 23, 2026.

The most flights from CAON to ORD are scheduled on a Monday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (50 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?

    There are many flights that can get you from Region of Ontario to Chicago O'Hare Intl Airport in 1h 56m. Fly via Air Canada, United Airlines, or Delta to get the fastest option. Airlines will cover a distance of 445 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 Air Canada ($108), United Airlines ($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: Emirates (100%), Copa Airlines (85%), Republic Airways( 75%).

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

    On average you can expect to pay $793 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is $130 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at $189.

  • 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 $128). Flying from Region of Ontario to Chicago O'Hare Intl Airport in April is currently the most expensive (average of $212). 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
Naperville
Lake Geneva
Hoffman Estates
Delavan
Downers Grove
Des Plaines
Elgin
Oak Brook
South Holland
Elk Grove Village
Libertyville
Waukegan
Beloit
Warrenville
Oakbrook Terrace
Bridgeview
Great Lakes

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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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$146Average$265FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$165Average$422FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$180Average$423FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$189Average$320FlexibilityNo cancel feeOn-time71%

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