$108+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
Jun 17 — Jun 241
1 adult, Economy
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Find cheap flights from Ontario to O'Hare Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $164 (United Airlines) |
|---|---|
One-way from | $108 (Air Canada) |
Popular in | December |
Cheapest in | April |
Average price | $253 |
Good round-trip deal | $248 or less |
Good one-way deal | $169 or less |
Find flight deals from Ontario to O'Hare Intl
Cheapest flights from Ontario to O'Hare IntlExplore 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 June 12, 2025.
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 June 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/197:00 amYYZ - ORD
Nonstop1h 59mUnited Airlines
Mon 9/229:12 pmORD - YYZ
Nonstop1h 46mUnited Airlines
Deal found 6/12![United Airlines logo]()
$164
This Air Canada deal was found by Cheapflights users on 6/12. 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 9/108:15 amYYZ - ORD
Nonstop1h 53mAir Canada
Fri 9/126:20 pmORD - YYZ
Nonstop1h 42mAir Canada
Deal found 6/12![Air Canada logo]()
$165
This KAYAK deal was found by Cheapflights users on 6/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:45 pmYYZ - ORD
1 stop5h 42mAmerican Airlines
Thu 10/29:48 amORD - YYZ
1 stop6h 27mAmerican Airlines
Deal found 6/10![American Airlines logo]()
$191
This Air Canada deal was found by Cheapflights users on 6/11. 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 10/410:25 amYTZ - ORD
1 stop5h 30mAir Canada
Wed 10/1510:40 amORD - YTZ
1 stop5h 05mAir Canada
Deal found 6/11![Air Canada logo]()
$207
This Kissandfly.com deal was found by Cheapflights users on 6/11. 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 7/37:00 amYYZ - ORD
Nonstop1h 59mLufthansa
Mon 7/79:14 pmORD - YYZ
Nonstop1h 44mLufthansa
Deal found 6/11![Lufthansa logo]()
$209
This Delta deal was found by Cheapflights users on 6/9. 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 7/45:04 pmYYZ - ORD
1 stop6h 17mDelta
Sun 7/69:00 amORD - YYZ
1 stop7h 15mDelta
Deal found 6/9![Delta logo]()
$219
This Air Canada deal was found by Cheapflights users on 6/10. 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 8/271:20 pmYUL - ORD
Nonstop2h 35mAir Canada
Wed 9/38:40 amORD - YUL
Nonstop2h 17mAir Canada
Deal found 6/10![Air Canada logo]()
$227
This American Airlines deal was found by Cheapflights users on 6/9. 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 8/307:50 amYUL - ORD
1 stop15h 59mAmerican Airlines
Tue 9/29:11 pmORD - YUL
1 stop14h 17mAmerican Airlines
Deal found 6/9![American Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 6/10. 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 10/37:00 amYUL - ORD
1 stop10h 38mDelta
Wed 10/86:00 amORD - YUL
1 stop9h 06mDelta
Deal found 6/10![Delta logo]()
$237
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Fri 7/254:00 pmYYZ - ORD
1 stop6h 30mMultiple Airlines
Fri 8/16:20 pmORD - YYZ
Nonstop1h 44mMultiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$249
This Kissandfly.com deal was found by Cheapflights users on 6/12. 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.
Mon 7/217:25 pmYYZ - ORD
1 stop12h 58mPorter Airlines
Sun 7/275:55 pmORD - YYZ
Nonstop1h 49mPorter Airlines
Deal found 6/12![Porter Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/176:15 amYUL - ORD
Nonstop2h 44mUnited Airlines
Tue 7/222:07 pmORD - YUL
Nonstop2h 19mUnited Airlines
Deal found 6/11![United Airlines logo]()
$291
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 June 12, 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
Fri 9/19
7:00 am-7:59 am
Nonstop1h 59m
Chicago O'Hare Intl
Mon 9/22
9:12 pm-11:58 pm
Nonstop1h 46m
$164
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Wed 9/10
8:15 am-9:08 am
Nonstop1h 53m
Chicago O'Hare Intl
Fri 9/12
6:20 pm-9:02 pm
Nonstop1h 42m
$165
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Tue 9/30
3:45 pm-8:27 pm
1 stop5h 42m
Chicago O'Hare Intl
Thu 10/2
9:48 am-5:15 pm
1 stop6h 27m
$191
TorontoChicago
YTZ - ORD
YTZORD
Toronto Island
Sat 8/30
3:25 pm-8:16 pm
1 stop5h 51m
Chicago O'Hare Intl
Fri 9/12
10:40 am-4:45 pm
1 stop5h 05m
$207
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Thu 7/3
7:00 am-7:59 am
Nonstop1h 59m
Chicago O'Hare Intl
Mon 7/7
9:14 pm-11:58 pm
Nonstop1h 44m
$209
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 7/4
5:04 pm-10:21 pm
1 stop6h 17m
Chicago O'Hare Intl
Sun 7/6
9:00 am-5:15 pm
1 stop7h 15m
$219
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 8/27
1:20 pm-2:55 pm
Nonstop2h 35m
Chicago O'Hare Intl
Wed 9/3
8:40 am-11:57 am
Nonstop2h 17m
$227
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sat 8/30
7:50 am-10:49 pm
1 stop15h 59m
Chicago O'Hare Intl
Tue 9/2
9:11 pm-12:28 pm
1 stop14h 17m
$231
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Fri 9/5
11:00 am-6:02 pm
1 stop8h 02m
Chicago O'Hare Intl
Mon 9/8
1:30 pm-11:53 pm
1 stop9h 23m
$237
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 7/25
4:00 pm-9:30 pm
1 stop6h 30m
Chicago O'Hare Intl
Fri 8/1
6:20 pm-9:04 pm
Nonstop1h 44m
$249
Showing 1-10 of 51 results
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 June 12, 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 June 12, 2025.
The most flights from CAON to ORD are scheduled on a Thursday (60 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).
Rainfall in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.
Temperature in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
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 June 12, 2025.
Read reviews from past customers who have flown Porter Airlines, Delta and United Airlines from Ontario to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Boarding
8.2
Food
7.6
Crew
8.7
Comfort
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
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.
Traveling to a place near Ontario?
Book flights to Ontario if you plan to visit one of these locationsSchaumburg
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Rosemont
Beloit
Elgin
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Skokie
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Rockford
Naperville
Orland Park
Elk Grove Village
Tinley Park
Northbrook
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Lake Geneva
Browse thousands of different options on Cheapflights for your next trip
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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.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$162 | Average$410 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$165 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$218 | Average$318 | FlexibilityNo cancel fee | On-time71% |