$71+ Cheap flights from O'Hare Intl (ORD) to Ontario
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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Aug 3 — Aug 101
1 adult, Economy
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Find cheap flights from O'Hare Intl to Ontario 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
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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 O'Hare Intl to Ontario
Keep the following information in mind while searching for O'Hare Intl to Ontario flight deals. Data was last updated July 29, 2025.
Round-trip from | $178 (Booking.com) |
|---|---|
One-way from | $71 (TeaFlight) |
Popular in | November |
Cheapest in | August |
Average price | $270 |
Good round-trip deal | $246 or less |
Good one-way deal | $91 or less |
Find flight deals from O'Hare Intl to Ontario
Cheapest flights from O'Hare Intl to OntarioExplore the most affordable flight options available from O'Hare Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
Explore the most affordable flight options available from O'Hare Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:25 pmORD - YYZ
Nonstop1h 43mAir Canada
Tue 9/2312:30 amYYZ - ORD
1 stop10h 21mAir Canada
Deal found 7/27![Air Canada logo]()
$178
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/36:00 amORD - YYZ
1 stop4h 44mUnited Airlines
Sat 9/63:00 pmYYZ - ORD
1 stop6h 11mUnited Airlines
Deal found 7/26![United Airlines logo]()
$184
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.
Thu 10/233:35 pmORD - YTZ
1 stop4h 59mAir Canada
Sun 10/267:20 pmYTZ - ORD
2 stops16h 58mAir Canada
Deal found 7/27![Air Canada logo]()
$197
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 8/301:21 pmORD - YUL
Nonstop2h 21mAmerican Airlines
Sat 9/67:50 amYUL - ORD
1 stop10h 39mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$204
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.
Sun 8/318:40 amORD - YUL
Nonstop2h 18mAir Canada
Mon 9/19:15 amYUL - ORD
1 stop11h 14mAir Canada
Deal found 7/27![Air Canada logo]()
$209
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.
Fri 11/216:04 amORD - YYZ
1 stop4h 48mAmerican Airlines
Tue 11/2511:51 amYYZ - ORD
1 stop8h 27mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$210
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:05 amORD - YYZ
1 stop8h 00mMultiple Airlines
Sat 9/136:30 amYYZ - ORD
1 stop12h 09mMultiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$224
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:10 amORD - YYZ
1 stop8h 00mDelta
Fri 9/1212:14 pmYYZ - ORD
1 stop6h 50mDelta
Deal found 7/28![Delta logo]()
$234
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:26 pmORD - YUL
1 stop9h 32mDelta
Mon 10/276:41 pmYUL - ORD
1 stop6h 16mDelta
Deal found 7/27![Delta logo]()
$237
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/49:00 amORD - YUL
1 stop9h 45mMultiple Airlines
Mon 9/88:20 amYUL - ORD
Nonstop2h 31mMultiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$269
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:00 pmORD - YUL
Nonstop2h 29mUnited Airlines
Mon 8/256:15 amYUL - ORD
Nonstop2h 46mUnited Airlines
Deal found 7/29![United Airlines logo]()
$296
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:30 pmORD - YXU
1 stop10h 42mWestJet
Thu 9/188:00 pmYXU - ORD
1 stop21h 43mWestJet
Deal found 7/28![WestJet logo]()
$298
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to Ontario 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 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ontario that are best for you.
Fly from
O'Hare Intl
Fly to
Ontario
Route
Depart
Return
Price
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Mon 9/22
8:25 pm-11:08 pm
Nonstop1h 43m
Toronto Pearson Intl
Tue 9/23
12:30 am-9:51 am
1 stop10h 21m
$178
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Wed 9/3
10:43 am-5:19 pm
1 stop5h 36m
Toronto Pearson Intl
Wed 9/10
6:00 pm-11:25 pm
1 stop6h 25m
$184
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Thu 10/23
3:35 pm-9:34 pm
1 stop4h 59m
Toronto Island
Sun 10/26
7:20 pm-11:18 am
2 stops16h 58m
$197
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Sat 8/30
1:21 pm-4:42 pm
Nonstop2h 21m
Montreal Pierre Elliott Trudeau Intl
Sat 9/6
7:50 am-5:29 pm
1 stop10h 39m
$204
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Sun 8/31
8:40 am-11:58 am
Nonstop2h 18m
Montreal Pierre Elliott Trudeau Intl
Mon 9/1
9:15 am-7:29 pm
1 stop11h 14m
$209
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Fri 9/5
8:35 am-5:19 pm
1 stop7h 44m
Toronto Pearson Intl
Thu 9/11
7:15 am-12:41 pm
1 stop6h 26m
$210
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Tue 9/9
5:05 am-2:05 pm
1 stop8h 00m
Toronto Pearson Intl
Sat 9/13
6:30 am-5:39 pm
1 stop12h 09m
$224
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sun 9/28
9:10 am-5:23 pm
1 stop7h 13m
Toronto Pearson Intl
Fri 10/3
12:14 pm-6:04 pm
1 stop6h 50m
$234
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Tue 10/21
1:26 pm-11:58 pm
1 stop9h 32m
Montreal Pierre Elliott Trudeau Intl
Fri 10/24
12:36 pm-9:24 pm
1 stop9h 48m
$237
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Thu 9/4
9:00 am-7:45 pm
1 stop9h 45m
Montreal Pierre Elliott Trudeau Intl
Mon 9/8
8:20 am-9:51 am
Nonstop2h 31m
$269
Showing 1-10 of 46 results
Best time to book a flight from O'Hare Intl to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from O'Hare Intl 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 Chicago O'Hare Intl Airport to Ontario
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of $243). Flying from Chicago O'Hare Intl Airport to Region of Ontario in August is currently the most expensive (average of $348). 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 ORD to ON?
Find hourly flight availability from O'Hare Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.
When flying from Chicago O'Hare Intl Airport to Region of Ontario, 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 Chicago O'Hare Intl Airport to Region of Ontario
Explore weekly flight availability from O'Hare Intl to Ontario. 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 29, 2025.
The most flights from ORD to CAON 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 (44 on average).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Chicago O'Hare Intl Airport to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Food
7.3
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for O'Hare Intl to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from O'Hare Intl to Ontario
Discover the top 3 airlines that operate flights from O'Hare Intl to Ontario. 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 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$120 | Average$378 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$145 | Average$469 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$200 | Average$378 | FlexibilityNo cancel fee | On-time71% |