$97+ Cheap flights from Chicago (CHI) 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Chicago 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
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 Chicago to Ontario
Keep the following information in mind while searching for Chicago to Ontario flight deals. Data was last updated April 29, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $170 (Air Canada) |
One-way from | $97 (Trip.com) |
Popular in | November |
Cheapest in | July |
Average price | $335 |
Good round-trip deal | $218 or less |
Good one-way deal | $116 or less |
Find flight deals from Chicago to Ontario
Cheapest flights from Chicago to OntarioExplore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.
Explore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.
This Air Canada deal was found by Cheapflights users on 4/27. 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.
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/29. 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.
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/29. 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.
This United deal was found by Cheapflights users on 4/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Atrapalo deal was found by Cheapflights users on 4/29. 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 Atrapalo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Flightnetwork deal was found by Cheapflights users on 4/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/27. 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.
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 April 29, 2025.
Use the filters below to find and compare flights from Chicago to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Tue 7/1
8:50 am-11:49 am
Nonstop1h 59m
Toronto Pearson Intl
Tue 7/1
2:00 pm-6:53 pm
1 stop5h 53m
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 6/20
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
Tue 6/24
3:35 pm-4:24 pm
Nonstop1h 49m
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 6/12
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
Thu 6/19
7:55 am-8:45 am
Nonstop1h 50m
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Thu 9/4
10:40 am-4:45 pm
1 stop5h 05m
Toronto Island
Sun 9/7
3:25 pm-8:11 pm
1 stop5h 46m
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 8/1
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
Tue 8/5
3:35 pm-4:24 pm
Nonstop1h 49m
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 5/24
9:45 pm-8:16 am
1 stop9h 31m
Toronto Pearson Intl
Wed 5/28
2:10 pm-3:05 pm
Nonstop1h 55m
ChicagoMontreal
MDW - YUL
MDWYUL
Chicago Midway
Thu 5/29
5:20 pm-10:15 pm
1 stop3h 55m
Montreal Pierre Elliott Trudeau Intl
Tue 6/3
1:10 pm-4:24 pm
1 stop4h 14m
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 6/13
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
Fri 6/20
7:55 am-8:45 am
Nonstop1h 50m
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Sat 6/7
8:10 am-11:30 am
Nonstop2h 20m
Montreal Pierre Elliott Trudeau Intl
Sat 6/7
2:35 pm-11:57 pm
1 stop10h 22m
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Wed 6/4
7:19 am-10:40 am
Nonstop2h 21m
Montreal Pierre Elliott Trudeau Intl
Tue 6/24
6:15 am-7:59 am
Nonstop2h 44m
Best time to book a flight from Chicago to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Chicago with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Ontario
What is the cheapest month to book a flight from Chicago to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of $243). Flying from Chicago to Region of Ontario in July is currently the most expensive (average of $359). 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 CHI to ON?
Find hourly flight availability from Chicago 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 April 29, 2025.
When flying from Chicago 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 to Region of Ontario
Explore weekly flight availability from Chicago 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 April 29, 2025.
The most flights from CHI to CAON 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 (34 on average).
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Region of Ontario, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).
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 April 29, 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as Porter Airlines, Delta and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Anonymous,Apr 2025
MCO - YHZ
Related info for your journey
Find useful and relevant information for your journey from Chicago 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 Chicago to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Chicago to Ontario
Discover the top 4 airlines that operate flights from Chicago 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 April 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$119 | Average$512 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$122 | Average$344 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$129 | Average$366 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$174 | Average$513 | FlexibilityNo cancel fee | On-time69% |