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$82+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Illinois to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$204
(Kiwi.com)

One-way from

$82
(Kiwi.com)
From Illinois to Ontario
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One-way flight from Illinois to Ontario
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Find flight deals from Illinois to Ontario

Cheapest flights from Illinois to Ontario
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 December 18, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/245:45 amORD - YYZ
1 stop29h 00mMultiple Airlines
Fri 1/107:00 amYYZ - ORD
1 stop15h 16mMultiple Airlines
Deal found 12/17$310
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Thu 12/265:35 pmMDW - YTZ
Nonstop1h 42mPorter Airlines
Mon 1/63:50 pmYTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 12/16$349
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/314:00 pmORD - YYZ
Nonstop1h 41mUnited Airlines
Tue 12/319:00 pmYYZ - ORD
Nonstop2h 13mUnited Airlines
Deal found 12/17$356
This Air Canada deal was found by Cheapflights users on 12/17. 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.
Fri 12/278:25 pmORD - YYZ
Nonstop1h 41mAir Canada
Mon 1/136:40 pmYYZ - ORD
Nonstop1h 57mAir Canada
Deal found 12/17$395
This Delta deal was found by Cheapflights users on 12/16. 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.
Thu 12/267:00 amORD - YYZ
1 stop8h 14mDelta
Tue 1/72:30 pmYYZ - ORD
1 stop6h 29mDelta
Deal found 12/16$420
This Delta deal was found by Cheapflights users on 12/16. 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.
Thu 12/269:30 amMDW - YYZ
1 stop5h 44mDelta
Mon 1/66:00 amYYZ - MDW
1 stop8h 08mDelta
Deal found 12/16$420
This Mytrip deal was found by Cheapflights users on 12/18. 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.
Sun 12/2911:15 amMDW - YUL
1 stop4h 35mPorter Airlines
Thu 1/26:55 amYUL - MDW
1 stop5h 15mPorter Airlines
Deal found 12/18$425
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/244:55 pmORD - YYZ
1 stop21h 35mAmerican Airlines
Thu 1/91:14 pmYYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 12/17$425
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Fri 12/276:00 amMDW - YTZ
2 stops11h 53mMultiple Airlines
Thu 1/23:50 pmYTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 12/16$435
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Fri 12/206:00 amMDW - YYZ
1 stop16h 50mMultiple Airlines
Thu 1/3010:45 pmYYZ - MDW
2 stops20h 08mMultiple Airlines
Deal found 12/16$436
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Thu 12/198:30 amORD - YUL
1 stop29h 30mMultiple Airlines
Wed 1/811:50 amYUL - ORD
2 stops8h 29mMultiple Airlines
Deal found 12/17$455
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/243:53 pmSTL - YYZ
1 stop18h 52mMultiple Airlines
Tue 12/317:05 amYYZ - STL
1 stop9h 16mMultiple Airlines
Deal found 12/17$456

Find flights from Illinois to Ontario within your budget

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 1/12

7:00 am-11:53 pm

1 stop15h 53m

Toronto Pearson Intl

Fri 1/24

9:25 am-8:45 pm

1 stop12h 20m

$204

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sat 1/11

1:05 pm-3:47 pm

Nonstop1h 42m

Toronto Island

Fri 1/24

11:20 am-12:10 pm

Nonstop1h 50m

$216

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 1/9

1:05 pm-3:47 pm

Nonstop1h 42m

Toronto Island

Sun 1/12

11:20 am-12:10 pm

Nonstop1h 50m

$249

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Wed 1/8

4:45 pm-8:30 am

1 stop14h 45m

Toronto Island

Wed 1/15

9:00 am-10:55 pm

1 stop14h 55m

$262

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sat 1/11

1:55 pm-8:43 pm

1 stop5h 48m

Toronto Island

Fri 1/24

8:25 am-2:45 pm

1 stop7h 20m

$263

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 1/13

9:49 am-12:30 pm

Nonstop1h 41m

Toronto Pearson Intl

Wed 1/15

11:31 am-12:31 pm

Nonstop2h 00m

$264

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Fri 1/10

5:40 am-1:50 pm

1 stop7h 10m

Toronto Pearson Intl

Sun 1/12

7:40 am-3:16 pm

1 stop8h 36m

$266

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 1/11

2:05 pm-4:46 pm

Nonstop1h 41m

Toronto Pearson Intl

Thu 1/23

6:40 pm-7:37 pm

Nonstop1h 57m

$269

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 1/18

6:00 am-12:37 pm

1 stop5h 37m

Toronto Pearson Intl

Sat 1/18

2:45 pm-6:55 pm

1 stop5h 10m

$274

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sat 2/1

1:05 pm-6:15 pm

1 stop4h 10m

Montreal Pierre Elliott Trudeau Intl

Sat 2/8

6:50 am-12:10 pm

1 stop6h 20m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
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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.

Travel insights for flights from Illinois to Ontario

Get recent, data-driven insights about flights from Illinois to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of $243). Flying from Illinois 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 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 December 18, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Region of Ontario as you normally would.

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 December 18, 2024.

The most flights from USIL to CAON are scheduled on a Monday (53 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 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 December 18, 2024.
Read through reviews of airlines operating flights from Illinois to Ontario, such as KLM, Delta and Air Canada. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,552 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines
7.9
Good
283 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat
7.8
Good
389 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Illinois to Region of Ontario one-way?

    $117 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Porter Airlines and Delta, with prices starting from $120 and $122, respectively.

  • Can I find deals for flights from Illinois to Ontario that include hotel bookings?

    Yes. In addition to deals on Illinois to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Ontario.

  • Can I find deals for business class flights from Illinois to Ontario?

    Yes. Cheapflights offers flight deals from Illinois to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of $243). Flying from Illinois 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.

See more FAQs

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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.
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Top 4 airlines flying from Illinois to Ontario

Discover the top 4 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$122Average$315FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$122Average$325FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$122Average$448FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$146Average$551FlexibilityNo cancel feeOn-time69%
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