$60+ Cheap flights from Illinois 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
fev 27 — mar 61
1 adult, Economy
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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 Illinois to Ontario
Cheapest flights from Illinois to OntarioExplore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janeiro 28, 2026.
Explore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janeiro 28, 2026.
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/2011:00 am
MDW
- YUL
1 stop5h 45m
Porter Airlines
qui 4/3010:15 am
YUL
- MDW
1 stop6h 05m
Porter Airlines
Deal found 1/26![Porter Airlines logo]()
$186
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 4/34:15 pm
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
seg 4/69:15 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 1/27![Porter Airlines logo]()
$188
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.
qui 6/188:45 am
ORD
- YTZ
1 stop6h 06m
Air Canada
dom 6/217:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 1/27![Air Canada logo]()
$188
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.
qui 2/1910:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
seg 2/232:15 pm
YYZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 1/26![Air Canada logo]()
$189
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/1911:05 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
sáb 2/2111:05 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 1/27![Porter Airlines logo]()
$192
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.
sex 3/132:00 pm
ORD
- YYZ
Nonstop1h 39m
Air Canada
sex 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 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 4/412:45 pm
MDW
- YTZ
Nonstop1h 42m
Multiple Airlines
sáb 4/1111:00 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$194
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/111:00 am
MDW
- YUL
1 stop6h 15m
Porter Airlines
ter 4/1412:05 pm
YUL
- MDW
1 stop4h 15m
Porter Airlines
Deal found 1/26![Porter Airlines logo]()
$195
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 2/1711:05 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
qui 2/199:20 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 1/27![Porter Airlines logo]()
$195
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.
qui 3/1211:00 am
MDW
- YTZ
Nonstop1h 42m
Multiple Airlines
qui 3/192:30 pm
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$196
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 5/85:35 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
seg 5/118:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 1/28![Porter Airlines logo]()
$197
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.
qua 2/188:00 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
sex 2/206:40 pm
YYZ
- ORD
Nonstop2h 05m
Air Canada
Deal found 1/26![Air Canada logo]()
$197
Find flight deals from Illinois to Ontario
Keep the following information in mind while searching for Illinois to Ontario flight deals. Data was last updated janeiro 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $186 (eDestinos) |
One-way from | $60 (Trip.com) |
Popular in | January |
Cheapest in | September |
Average price | $309 |
Good round-trip deal | $211 or less |
Good one-way deal | $167 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois 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 janeiro 28, 2026.
Use the filters below to find and compare flights from Illinois to Ontario that are best for you.
Fly from
Illinois
Fly to
Ontario
Route
Depart
Return
Price
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
qui 6/4
5:35 pm-8:15 pm
Nonstop1h 40m
Toronto Island
dom 6/7
4:00 pm-4:50 pm
Nonstop1h 50m
$194
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sex 5/8
5:35 pm-8:15 pm
Nonstop1h 40m
Toronto Island
seg 5/11
8:50 am-9:40 am
Nonstop1h 50m
$196
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
qui 3/12
11:00 am-1:42 pm
Nonstop1h 42m
Toronto Island
qui 3/19
2:30 pm-3:20 pm
Nonstop1h 50m
$196
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sáb 4/11
12:45 pm-3:27 pm
Nonstop1h 42m
Toronto Island
dom 4/12
9:15 am-10:05 am
Nonstop1h 50m
$196
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sáb 3/14
12:45 pm-3:27 pm
Nonstop1h 42m
Toronto Island
ter 3/17
9:15 am-10:05 am
Nonstop1h 50m
$197
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sex 5/29
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
dom 5/31
8:50 am-9:40 am
Nonstop1h 50m
$197
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
qui 5/7
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
seg 5/11
4:00 pm-4:50 pm
Nonstop1h 50m
$197
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
ter 2/17
11:05 am-1:47 pm
Nonstop1h 42m
Toronto Island
qui 2/19
9:20 am-10:10 am
Nonstop1h 50m
$197
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
sex 4/3
11:00 am-1:42 pm
Nonstop1h 42m
Toronto Island
seg 4/6
9:15 am-10:05 am
Nonstop1h 50m
$198
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
qui 5/7
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
dom 5/10
8:50 am-9:40 am
Nonstop1h 50m
$198
Showing 1-10 of 60 results
Best time to book a flight from Illinois to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Illinois 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 Illinois to Ontario
What is the cheapest month to book a flight from Illinois to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of $79). Flying from Illinois to Region of Ontario in January is currently the most expensive (average of $177). 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 IL to ON?
Find hourly flight availability from Illinois 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 janeiro 28, 2026.
It’s optimal to fly from Illinois to Region of Ontario in the morning. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.
What is the cheapest day to fly from Illinois to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Ontario. Price data was last updated on January 24, 2026.
Travelers seeking maximum savings on their Illinois to Region of Ontario flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Region of Ontario
Explore weekly flight availability from Illinois 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 janeiro 28, 2026.
The most flights from USIL to CAON are scheduled on a Friday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (41 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 janeiro 28, 2026.
Read through reviews of airlines operating flights from Illinois to Ontario, such as Porter Airlines, Air Transat, and United Airlines. 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.
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Boarding
8.2
Food
7.5
Overall
7.9
Comfort
7.9
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
8.0
ExcellentMohameed,Nov 2025
LAS - YYZ
Related info for your journey
Find useful and relevant information for your journey from Illinois 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 Illinois to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Illinois to Ontario
Discover the top 5 airlines that operate flights from Illinois 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 janeiro 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$359 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$100 | Average$258 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$109 | Average$351 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$140 | Average$405 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$217 | Average$359 | FlexibilityNo cancel fee | On-time71% |