$56+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
ene. 11 — ene. 181
1 adult, Economy
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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 diciembre 12, 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 diciembre 12, 2025.
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/252:30 pmORD - YYZ
1 stop8h 16mUnited Airlines
vie. 12/266:50 amYYZ - ORD
Nonstop2h 13mUnited Airlines
Deal found 12/10![United Airlines logo]()
$253
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/256:21 pmORD - YYZ
1 stop4h 25mUnited Airlines
lun. 1/510:00 amYYZ - ORD
1 stop14h 44mUnited Airlines
Deal found 12/10![United Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 12/11. 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.
jue. 12/256:21 pmORD - YYZ
1 stop4h 25mUnited Airlines
lun. 12/299:00 amYYZ - ORD
Nonstop2h 05mUnited Airlines
Deal found 12/11![United Airlines logo]()
$273
This Mytrip deal was found by Cheapflights users on 12/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/248:30 pmORD - YUL
1 stop4h 23mAir Canada
sáb. 12/277:00 amYUL - ORD
1 stop13h 45mAir Canada
Deal found 12/9![Air Canada logo]()
$299
This Air Canada deal was found by Cheapflights users on 12/11. 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.
mié. 12/312:00 pmORD - YUL
1 stop4h 22mAir Canada
mar. 1/611:10 amYUL - ORD
1 stop5h 00mAir Canada
Deal found 12/11![Air Canada logo]()
$302
This Air Canada deal was found by Cheapflights users on 12/11. 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.
jue. 12/2510:00 amORD - YUL
1 stop4h 23mAir Canada
mié. 12/318:50 amYUL - ORD
2 stops7h 20mAir Canada
Deal found 12/11![Air Canada logo]()
$307
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/256:21 pmORD - YYZ
1 stop4h 25mUnited Airlines
mié. 12/3112:10 pmYYZ - ORD
1 stop7h 43mUnited Airlines
Deal found 12/10![United Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/257:00 amORD - YUL
1 stop4h 46mUnited Airlines
dom. 12/285:25 pmYUL - ORD
1 stop17h 19mUnited Airlines
Deal found 12/9![United Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/259:34 amORD - YOW
1 stop26h 01mMultiple Airlines
jue. 1/87:00 amYOW - ORD
1 stop14h 30mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/246:40 amORD - YTZ
2 stops33h 08mMultiple Airlines
mié. 12/316:45 amYTZ - ORD
1 stop16h 22mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$359
This Air Canada deal was found by Cheapflights users on 12/10. 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.
dom. 12/288:30 pmORD - YUL
1 stop4h 23mAir Canada
lun. 1/126:25 pmYUL - ORD
Nonstop2h 45mAir Canada
Deal found 12/10![Air Canada logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/116:15 amORD - YYZ
1 stop31h 25mMultiple Airlines
jue. 1/157:10 amYYZ - ORD
1 stop13h 31mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$372
Find 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 diciembre 12, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $184 (Booking.com) |
One-way from | $56 (Mytrip) |
Popular in | February |
Cheapest in | September |
Average price | $294 |
Good round-trip deal | $410 or less |
Good one-way deal | $169 or less |
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 diciembre 12, 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
vie. 1/30
9:15 pm-11:59 pm
Nonstop1h 44m
Toronto Pearson Intl
lun. 2/2
9:00 pm-10:05 pm
Nonstop2h 05m
$211
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
sáb. 1/24
3:35 pm-9:35 pm
1 stop5h 00m
Toronto Island
sáb. 1/31
3:30 pm-8:10 pm
1 stop5h 40m
$213
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
mié. 1/21
6:05 am-11:48 am
1 stop4h 43m
Toronto Pearson Intl
mié. 1/21
3:30 pm-4:40 pm
Nonstop2h 10m
$229
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
mar. 2/10
12:30 pm-11:13 pm
1 stop9h 43m
Toronto Pearson Intl
vie. 2/13
10:05 am-4:41 pm
1 stop7h 36m
$233
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
vie. 2/13
7:00 am-5:18 pm
1 stop9h 18m
Toronto Pearson Intl
dom. 2/15
5:15 pm-8:44 pm
1 stop4h 29m
$233
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
jue. 2/5
6:15 am-1:42 pm
1 stop6h 27m
Montreal Pierre Elliott Trudeau Intl
dom. 2/8
6:00 am-9:41 am
1 stop4h 41m
$236
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
vie. 2/20
6:30 am-3:55 pm
1 stop8h 25m
Montreal Pierre Elliott Trudeau Intl
lun. 2/23
7:00 am-4:50 pm
1 stop10h 50m
$236
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
jue. 1/29
7:10 am-9:58 am
Nonstop1h 48m
Toronto Pearson Intl
lun. 2/2
3:30 pm-4:40 pm
Nonstop2h 10m
$237
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
jue. 2/12
6:45 am-4:53 pm
1 stop9h 08m
Montreal Pierre Elliott Trudeau Intl
dom. 2/15
6:00 am-9:41 am
1 stop4h 41m
$237
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
sáb. 2/14
2:03 pm-11:10 pm
1 stop8h 07m
Montreal Pierre Elliott Trudeau Intl
sáb. 2/21
6:00 am-9:41 am
1 stop4h 41m
$237
Showing 1-10 of 60 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of $85). Flying from Chicago O'Hare Intl Airport to Region of Ontario in December is currently the most expensive (average of $210). 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 diciembre 12, 2025.
Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Chicago O'Hare Intl Airport to Region of Ontario by exploring options for tickets in the morning.
What is the cheapest day to fly from Chicago O'Hare Intl Airport to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Ontario. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Region of Ontario flight should consider departing on Monday mornings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 diciembre 12, 2025.
The most flights from ORD to CAON are scheduled on a Monday (64 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 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 diciembre 12, 2025.
Get a feel of what it's like to fly with Porter Airlines, 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.
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Entertainment
7.0
Crew
8.6
Boarding
8.2
Overall
8.0
Food
7.6
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
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 4 airlines flying from O'Hare Intl to Ontario
Discover the top 4 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 diciembre 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$116 | Average$273 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$146 | Average$423 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$215 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$294 | Average$466 | FlexibilityNo cancel fee | On-time52% |