Cheap flights from Ontario to Chicago O'Hare Intl Airport from C$ 174
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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
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 22 April 2025.
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 22 April 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 22 April 2025.
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 629,999 searches. Data last updated 22 April 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
Fly to
Route
Depart
Return
Price
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 6/6
6:15 a.m.-9:52 a.m.
1 stop4h 37m
Chicago O'Hare Intl
Fri 13/6
6:30 p.m.-9:16 p.m.
Nonstop1h 46m
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 20/6
12:15 p.m.-11:30 p.m.
1 stop12h 15m
Chicago O'Hare Intl
Sun 22/6
1:01 p.m.-3:46 p.m.
Nonstop1h 45m
TorontoChicago
YTZ - ORD
YTZORD
Toronto Island
Sun 15/6
7:25 a.m.-11:24 a.m.
1 stop4h 59m
Chicago O'Hare Intl
Sat 28/6
5:58 p.m.-8:06 a.m.
1 stop13h 08m
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Tue 10/6
8:10 a.m.-4:48 p.m.
1 stop9h 38m
Chicago O'Hare Intl
Thu 12/6
2:16 p.m.-11:07 p.m.
1 stop7h 51m
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Fri 6/6
6:30 a.m.-12:41 p.m.
1 stop7h 11m
Chicago O'Hare Intl
Fri 13/6
2:00 p.m.-10:58 p.m.
1 stop7h 58m
TorontoChicago
YYZ - ORD
YYZORD
Toronto Pearson Intl
Tue 6/5
6:20 p.m.-7:15 p.m.
Nonstop1h 55m
Chicago O'Hare Intl
Thu 8/5
8:11 a.m.-10:51 a.m.
Nonstop1h 40m
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sat 21/6
6:00 a.m.-9:59 a.m.
1 stop4h 59m
Chicago O'Hare Intl
Tue 24/6
6:30 p.m.-12:41 a.m.
1 stop5h 11m
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Mon 2/6
7:00 a.m.-2:47 p.m.
1 stop8h 47m
Chicago O'Hare Intl
Tue 10/6
7:07 a.m.-4:25 p.m.
1 stop8h 18m
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 22/5
6:15 a.m.-7:59 a.m.
Nonstop2h 44m
Chicago O'Hare Intl
Mon 26/5
8:25 p.m.-1:51 a.m.
1 stop4h 26m
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 22/5
1:15 p.m.-2:47 p.m.
Nonstop2h 32m
Chicago O'Hare Intl
Thu 29/5
4:00 p.m.-7:48 a.m.
1 stop14h 48m
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.
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, January is the cheapest month in which you can book a flight from Region of Ontario to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Region of Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 355). 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 22 April 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Chicago O'Hare Intl Airport as you normally would.
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 22 April 2025.
The most flights from CAON to ORD are scheduled on a Tuesday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (50 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 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.
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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
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 22 April 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Ontario to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Crew
Comfort
Entertainment
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
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.
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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 5 airlines flying from Ontario to O'Hare Intl
Discover the top 5 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 629,999 searches. Data last updated 22 April 2025.
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Can Cheapflights find flights from Ontario to O'Hare Intl with no change fees?
Certainly. Search results for flights to O'Hare Intl from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
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