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O'Hare Intl

$103+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$147
(Air Canada)

One-way from

$103
(Booking.com)

Popular in

December

Cheapest in

June

Average price

$270

Good round-trip deal

$326 or less

Good one-way deal

$212 or less
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. 7% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Air Canada deal was found by Cheapflights users on 7/27. 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.
Wed 8/2712:05 pmYYZ - ORD
2 stops9h 11mAir Canada
Wed 9/38:25 pmORD - YYZ
Nonstop1h 43mAir Canada
Deal found 7/27$152
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/133:25 pmYTZ - ORD
1 stop5h 46mAir Canada
Sat 9/203:35 pmORD - YTZ
1 stop4h 59mAir Canada
Deal found 7/29$155
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 8/259:00 pmYYZ - ORD
Nonstop2h 07mUnited Airlines
Tue 9/29:12 pmORD - YYZ
Nonstop1h 46mUnited Airlines
Deal found 7/27$168
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/118:20 amYUL - ORD
Nonstop2h 31mAir Canada
Thu 9/188:25 pmORD - YUL
1 stop4h 25mAir Canada
Deal found 7/28$173
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:29 pmYUL - ORD
Nonstop2h 36mAmerican Airlines
Tue 9/28:34 pmORD - YUL
1 stop16h 06mAmerican Airlines
Deal found 7/27$174
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:15 pmYYZ - ORD
1 stop13h 21mAmerican Airlines
Tue 10/710:05 amORD - YYZ
1 stop11h 57mAmerican Airlines
Deal found 7/27$190
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/124:12 pmYYZ - ORD
1 stop5h 08mDelta
Sun 9/147:10 amORD - YYZ
1 stop7h 12mDelta
Deal found 7/30$212
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amYUL - ORD
1 stop8h 09mDelta
Sat 9/1310:30 amORD - YUL
1 stop7h 55mDelta
Deal found 7/30$215
This United deal was found by Cheapflights users on 7/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:55 pmYUL - ORD
Nonstop2h 46mMultiple Airlines
Sun 9/78:40 amORD - YUL
Nonstop2h 17mMultiple Airlines
Deal found 7/30$243
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Thu 8/286:15 amYUL - ORD
Nonstop2h 46mUnited Airlines
Tue 9/22:08 pmORD - YUL
Nonstop2h 18mUnited Airlines
Deal found 7/29$262
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:30 pmYTZ - ORD
2 stops21h 40mMultiple Airlines
Sat 9/610:40 amORD - YTZ
1 stop5h 05mMultiple Airlines
Deal found 7/28$279
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 9/36:33 amYOW - ORD
Nonstop2h 27mUnited Airlines
Sun 9/710:50 amORD - YOW
Nonstop2h 14mUnited Airlines
Deal found 7/29$325

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 July 30, 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

YYZ - ORD

YYZORD

Toronto Pearson Intl

Wed 8/27

12:05 pm-8:16 pm

2 stops9h 11m

Chicago O'Hare Intl

Wed 9/3

8:25 pm-11:08 pm

Nonstop1h 43m

$152

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Sat 9/13

3:25 pm-8:11 pm

1 stop5h 46m

Chicago O'Hare Intl

Sat 9/20

3:35 pm-9:34 pm

1 stop4h 59m

$155

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Mon 8/25

9:00 pm-10:07 pm

Nonstop2h 07m

Chicago O'Hare Intl

Tue 9/2

9:12 pm-11:58 pm

Nonstop1h 46m

$168

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/11

8:20 am-9:51 am

Nonstop2h 31m

Chicago O'Hare Intl

Thu 9/18

8:25 pm-1:50 am

1 stop4h 25m

$173

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 8/30

5:29 pm-7:05 pm

Nonstop2h 36m

Chicago O'Hare Intl

Tue 9/2

8:34 pm-1:40 pm

1 stop16h 06m

$174

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Mon 10/6

7:15 pm-7:36 am

1 stop13h 21m

Chicago O'Hare Intl

Tue 10/7

10:05 am-11:02 pm

1 stop11h 57m

$190

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 9/12

4:12 pm-8:20 pm

1 stop5h 08m

Chicago O'Hare Intl

Sun 9/14

7:10 am-3:22 pm

1 stop7h 12m

$212

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

6:00 am-1:09 pm

1 stop8h 09m

Chicago O'Hare Intl

Sat 9/13

10:30 am-7:25 pm

1 stop7h 55m

$215

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

4:55 pm-6:41 pm

Nonstop2h 46m

Chicago O'Hare Intl

Sun 9/7

8:40 am-11:57 am

Nonstop2h 17m

$243

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 8/28

6:15 am-8:01 am

Nonstop2h 46m

Chicago O'Hare Intl

Tue 9/2

2:08 pm-5:26 pm

Nonstop2h 18m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 45 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, August is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of $245). Flying from Region of Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 July 30, 2025.

When flying from Region of Ontario to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 30, 2025.

The most flights from CAON to ORD are scheduled on a Monday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 on average).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated July 30, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Ontario to Chicago O'Hare Intl Airport have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
WestJet
7.2
Good
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • 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 ($103), American Airlines ($111), and United Airlines ($128).

  • 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: Cathay Pacific (100%), SkyWest Airlines (91%), Egyptair( 90%).

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

    On average you can expect to pay $2,979 for a flight from Region of Ontario to Chicago O'Hare Intl Airport. The cheapest flight overall is $122 while the most popular route, (Toronto Pearson Intl - Chicago O'Hare Intl) is currently priced at $142.

  • 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, August is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of $245). Flying from Region of Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Beloit
Hoffman Estates
Skokie
Naperville
Des Plaines
Elgin
Arlington Heights
Elk Grove Village
Racine
Rockford
Tinley Park
Orland Park
Merrillville
Downers Grove
Evanston
Lake Geneva
Gurnee
Joliet

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

Top 3 airlines flying from Ontario to O'Hare Intl

Discover the top 3 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$155Average$412FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$165Average$418FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$211Average$334FlexibilityNo cancel feeOn-time71%

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