$79+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
jul 8 — jul 151
1 adult, Economy
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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
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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 Chicago to Ontario
Keep the following information in mind while searching for Chicago to Ontario flight deals. Data was last updated julho 3, 2025.
Round-trip from | $179 (Booking.com) |
|---|---|
One-way from | $79 (SmartFares) |
Popular in | November |
Cheapest in | July |
Average price | $266 |
Good round-trip deal | $192 or less |
Good one-way deal | $86 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 julho 3, 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 julho 3, 2025.
This Booking.com deal was found by Cheapflights users on 7/2. 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.
sáb 8/168:25 pmORD - YYZ
Nonstop1h 45mAir Canada
sáb 8/234:45 pmYYZ - ORD
Nonstop1h 57mAir Canada
Deal found 7/2![Air Canada logo]()
$179
This Air Canada deal was found by Cheapflights users on 7/2. 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.
qua 9/38:40 amORD - YTZ
1 stop5h 05mAir Canada
sáb 9/63:25 pmYTZ - ORD
1 stop5h 46mAir Canada
Deal found 7/2![Air Canada logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 7/85:20 pmMDW - YTZ
Nonstop1h 42mMultiple Airlines
qua 7/97:55 amYTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$181
This United Airlines deal was found by Cheapflights users on 7/2. 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.
qua 8/137:04 amORD - YYZ
Nonstop1h 54mUnited Airlines
qua 8/1312:45 pmYYZ - ORD
1 stop5h 07mUnited Airlines
Deal found 7/2![United Airlines logo]()
$181
This FlightHub deal was found by Cheapflights users on 7/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 8/159:40 amMDW - YTZ
Nonstop1h 40mPorter Airlines
seg 8/187:55 amYTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 7/3![Porter Airlines logo]()
$182
This American Airlines deal was found by Cheapflights users on 7/1. 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.
dom 10/123:00 pmORD - YYZ
Nonstop1h 40mAmerican Airlines
seg 10/206:29 pmYYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 7/1![American Airlines logo]()
$185
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 7/119:40 amMDW - YTZ
Nonstop1h 40mAir Transat
seg 7/147:55 amYTZ - MDW
Nonstop1h 50mAir Transat
Deal found 7/1![Air Transat logo]()
$214
This Delta deal was found by Cheapflights users on 7/1. 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.
ter 9/99:30 amMDW - YYZ
1 stop6h 53mDelta
sáb 9/1312:14 pmYYZ - MDW
1 stop7h 21mDelta
Deal found 7/1![Delta logo]()
$234
This Booking.com deal was found by Cheapflights users on 7/2. 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.
qua 7/306:00 amORD - YUL
1 stop6h 09mAir Canada
qua 8/69:15 amYUL - ORD
1 stop4h 58mAir Canada
Deal found 7/2![Air Canada logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
sex 9/125:20 pmMDW - YUL
1 stop3h 55mMultiple Airlines
sáb 9/1310:57 amYUL - MDW
1 stop7h 38mMultiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$262
This Trip.com deal was found by Cheapflights users on 7/1. 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.
sex 8/295:20 pmMDW - YUL
1 stop3h 55mPorter Airlines
seg 9/16:55 amYUL - MDW
1 stop3h 55mPorter Airlines
Deal found 7/1![Porter Airlines logo]()
$268
This United deal was found by Cheapflights users on 7/2. 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.
qui 9/47:11 amORD - YUL
Nonstop2h 29mMultiple Airlines
dom 9/76:15 amYUL - ORD
Nonstop2h 46mMultiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$269
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 julho 3, 2025.
Use the filters below to find and compare flights from Chicago to Ontario that are best for you.
Fly from
Chicago
Fly to
Ontario
Route
Depart
Return
Price
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
sáb 8/16
8:25 pm-11:10 pm
Nonstop1h 45m
Toronto Pearson Intl
sáb 8/23
4:45 pm-5:42 pm
Nonstop1h 57m
$179
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
qua 9/3
8:40 am-2:45 pm
1 stop5h 05m
Toronto Island
sáb 9/6
3:25 pm-8:11 pm
1 stop5h 46m
$180
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
ter 7/8
5:20 pm-8:02 pm
Nonstop1h 42m
Toronto Island
qua 7/9
7:55 am-8:45 am
Nonstop1h 50m
$181
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
qua 8/13
7:04 am-9:58 am
Nonstop1h 54m
Toronto Pearson Intl
qua 8/13
12:45 pm-4:52 pm
1 stop5h 07m
$181
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sex 8/15
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
seg 8/18
7:55 am-8:45 am
Nonstop1h 50m
$182
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
qua 8/13
6:00 am-2:44 pm
1 stop7h 44m
Toronto Pearson Intl
qua 8/13
5:18 pm-11:25 pm
1 stop7h 07m
$197
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sex 7/11
9:40 am-12:20 pm
Nonstop1h 40m
Toronto Island
seg 7/14
7:55 am-8:45 am
Nonstop1h 50m
$214
ChicagoToronto
MDW - YYZ
MDWYYZ
Chicago Midway
ter 9/9
9:30 am-5:23 pm
1 stop6h 53m
Toronto Pearson Intl
sáb 9/13
12:14 pm-6:35 pm
1 stop7h 21m
$234
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
qua 7/30
6:00 am-1:09 pm
1 stop6h 09m
Montreal Pierre Elliott Trudeau Intl
qua 8/6
9:15 am-1:13 pm
1 stop4h 58m
$261
ChicagoMontreal
MDW - YUL
MDWYUL
Chicago Midway
sex 9/12
5:20 pm-10:15 pm
1 stop3h 55m
Montreal Pierre Elliott Trudeau Intl
sáb 9/13
10:57 am-5:35 pm
1 stop7h 38m
$262
Showing 1-10 of 60 results
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.
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 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 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 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 julho 3, 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 julho 3, 2025.
The most flights from CHI to CAON are scheduled on a Wednesday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).
How much does it cost to fly round-trip from Chicago 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 julho 3, 2025.
See what other customers who have flown with Porter Airlines, Delta, and Air Transat from Chicago to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
Entertainment
7.0
Crew
8.7
Food
7.7
Comfort
8.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
4.0
OkayMary,Jun 2025
FLL - YYZ
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.
Browse thousands of different options on Cheapflights for your next trip
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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 julho 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$109 | Average$329 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$119 | Average$363 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$140 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$190 | Average$377 | FlexibilityNo cancel fee | On-time71% |