$66+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Feb 26 — Mar 51
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 January 27, 2026.
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 January 27, 2026.
This Booking.com deal was found by Cheapflights users on 1/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Mon 2/232:15 pm
YYZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 1/26![Air Canada logo]()
$189
This Booking.com deal was found by Cheapflights users on 1/27. 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.
Fri 3/132:00 pm
ORD
- YYZ
Nonstop1h 39m
Air Canada
Fri 3/204:50 pm
YYZ
- ORD
Nonstop1h 58m
Air Canada
Deal found 1/27![Air Canada logo]()
$193
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Fri 2/206:40 pm
YYZ
- ORD
Nonstop2h 05m
Air Canada
Deal found 1/26![Air Canada logo]()
$197
This Flightnetwork deal was found by Cheapflights users on 1/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/138:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Mon 3/168:15 am
YYZ
- ORD
Nonstop1h 58m
Air Canada
Deal found 1/26![Air Canada logo]()
$198
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Thu 6/46:25 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 1/26![Air Canada logo]()
$199
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/1810:35 am
ORD
- YUL
Nonstop2h 25m
United Airlines
Wed 2/184:45 pm
YUL
- ORD
Nonstop3h 00m
United Airlines
Deal found 1/26![United Airlines logo]()
$203
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 3/56:40 am
ORD
- YUL
1 stop7h 42m
American Airlines
Mon 3/93:45 pm
YUL
- ORD
Nonstop3h 00m
American Airlines
Deal found 1/25![American Airlines logo]()
$213
This Air Canada deal was found by Cheapflights users on 1/27. 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 6/187:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Sun 6/217:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 1/27![Air Canada logo]()
$213
This Air Canada deal was found by Cheapflights users on 1/27. 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 4/912:50 pm
ORD
- YUL
Nonstop2h 15m
Air Canada
Sun 4/129:15 am
YUL
- ORD
Nonstop2h 38m
Air Canada
Deal found 1/27![Air Canada logo]()
$214
This Air Canada deal was found by Cheapflights users on 1/24. 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.
Mon 6/82:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Wed 6/107:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 1/24![Air Canada logo]()
$215
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 2/1710:35 am
ORD
- YUL
Nonstop2h 25m
United Airlines
Sat 2/219:15 am
YUL
- ORD
1 stop10h 26m
United Airlines
Deal found 1/27![United Airlines logo]()
$219
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 4/142:05 pm
ORD
- YUL
1 stop7h 53m
American Airlines
Sat 4/1812:30 pm
YUL
- ORD
Nonstop2h 40m
American Airlines
Deal found 1/27![American Airlines logo]()
$224
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 January 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $189 (Booking.com) |
One-way from | $66 (Booking.com) |
Popular in | January |
Cheapest in | September |
Average price | $309 |
Good round-trip deal | $323 or less |
Good one-way deal | $171 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 January 27, 2026.
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
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Wed 2/18
10:35 am-2:00 pm
Nonstop2h 25m
Montreal Pierre Elliott Trudeau Intl
Wed 2/18
4:45 pm-6:45 pm
Nonstop3h 00m
$203
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 4/4
5:57 pm-8:44 pm
Nonstop1h 47m
Toronto Pearson Intl
Sat 4/11
1:00 pm-2:03 pm
Nonstop2h 03m
$222
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 3/28
9:15 pm-11:58 pm
Nonstop1h 43m
Toronto Pearson Intl
Tue 3/31
10:15 am-11:18 am
Nonstop2h 03m
$222
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Wed 2/25
7:07 am-9:58 am
Nonstop1h 51m
Toronto Pearson Intl
Sun 3/1
6:45 am-8:00 am
Nonstop2h 15m
$222
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 4/4
7:04 am-9:54 am
Nonstop1h 50m
Toronto Pearson Intl
Wed 4/8
10:15 am-11:18 am
Nonstop2h 03m
$222
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Tue 3/31
9:05 am-11:49 am
Nonstop1h 44m
Toronto Pearson Intl
Sat 4/4
11:00 am-12:03 pm
Nonstop2h 03m
$224
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Thu 5/7
9:15 pm-11:59 pm
Nonstop1h 44m
Toronto Pearson Intl
Mon 5/11
7:00 am-8:00 am
Nonstop2h 00m
$224
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 4/18
2:00 pm-4:56 pm
Nonstop1h 56m
Toronto Pearson Intl
Mon 4/20
11:00 am-12:03 pm
Nonstop2h 03m
$224
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Sun 2/22
7:15 am-2:25 pm
1 stop6h 10m
Toronto Island
Thu 3/5
7:00 am-11:18 am
1 stop5h 18m
$230
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Wed 2/25
3:35 pm-9:35 pm
1 stop5h 00m
Toronto Island
Wed 3/4
7:00 am-11:18 am
1 stop5h 18m
$230
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 $211). 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 January 27, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 31% on flights from Chicago O'Hare Intl Airport to Region of Ontario by exploring options for tickets in the evening.
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 January 24, 2026.
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. Tuesday afternoons 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 January 27, 2026.
The most flights from ORD to CAON are scheduled on a Monday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (49 on average).
How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Region of Ontario?
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 January 27, 2026.
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.
Overall
7.9
Food
7.5
Crew
8.6
Entertainment
6.9
Boarding
8.2
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Overall
7.9
Food
7.5
Crew
8.6
Entertainment
6.9
Boarding
8.2
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Overall
7.9
Food
7.5
Crew
8.6
Entertainment
6.9
Boarding
8.2
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Overall
7.9
Food
7.5
Crew
8.6
Entertainment
6.9
Boarding
8.2
Comfort
7.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Overall
7.9
Food
7.5
Crew
8.6
Entertainment
6.9
Boarding
8.2
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 January 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$258 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$109 | Average$476 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$140 | Average$405 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$217 | Average$359 | FlexibilityNo cancel fee | On-time71% |