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Cheap flights from Canada to Illinois from C$ 121

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Canada to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Canada to Illinois
Explore the most affordable flight options available from Canada to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Wed 31/129:00 p.m.YYZ - ORD
Nonstop2h 05mUnited Airlines
Fri 30/111:15 a.m.ORD - YYZ
Nonstop1h 46mUnited Airlines
Deal found 15/12C$ 281
Wed 31/127:40 p.m.YYZ - ORD
1 stop5h 04mUnited Airlines
Mon 2/24:50 p.m.ORD - YYZ
Nonstop1h 55mUnited Airlines
Deal found 15/12C$ 289
Tue 30/127:40 p.m.YYZ - ORD
1 stop5h 04mUnited Airlines
Fri 9/16:17 p.m.ORD - YYZ
1 stop4h 29mUnited Airlines
Deal found 15/12C$ 347
Wed 31/126:40 p.m.YYZ - ORD
1 stop5h 55mUnited Airlines
Sat 28/311:11 a.m.ORD - YYZ
Nonstop1h 50mUnited Airlines
Deal found 14/12C$ 369
Tue 30/129:15 a.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Tue 3/211:05 a.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Deal found 15/12C$ 372
Mon 29/129:00 p.m.YYZ - ORD
Nonstop2h 05mUnited Airlines
Tue 3/211:15 a.m.ORD - YYZ
Nonstop1h 46mUnited Airlines
Deal found 15/12C$ 380
Wed 31/126:40 p.m.YYZ - ORD
1 stop5h 55mUnited Airlines
Tue 24/31:06 p.m.ORD - YYZ
1 stop4h 51mUnited Airlines
Deal found 14/12C$ 383
Wed 31/126:40 p.m.YYZ - ORD
1 stop5h 55mUnited Airlines
Wed 25/39:15 a.m.ORD - YYZ
1 stop7h 34mUnited Airlines
Deal found 14/12C$ 388
Wed 31/126:40 p.m.YYZ - ORD
1 stop5h 55mUnited Airlines
Sun 4/18:46 p.m.ORD - YYZ
1 stop10h 49mUnited Airlines
Deal found 14/12C$ 401
Wed 31/129:15 a.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Tue 3/211:05 a.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Deal found 15/12C$ 401
Tue 30/127:40 p.m.YYZ - ORD
1 stop5h 04mUnited Airlines
Mon 2/24:50 p.m.ORD - YYZ
Nonstop1h 55mUnited Airlines
Deal found 15/12C$ 402
Sat 27/126:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Mon 23/211:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Deal found 15/12C$ 413

Find flight deals from Canada to Illinois

Keep the following information in mind while searching for Canada to Illinois flight deals. Data was last updated 16 December 2025.

Round-trip from

C$ 246

One-way from

C$ 121

Popular in

December

Cheapest in

July

Average price

C$ 442

Good round-trip deal

C$ 245 or less

Good one-way deal

C$ 152 or less
Porter Airlines
  • Porter Airlines
  • 20/2-23/2
  • Nonstop
  • 3h 32m total
  • Canada to Illinois
Search Deals
WestJet
  • WestJet
  • 1/5
  • 1 total stop
  • 7h 43m total
  • Canada to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Canada to Illinois.
Search Deals
Price to beat on a one-way flight from Canada to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Canada to Illinois 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 16 December 2025.
Use the filters below to find and compare flights from Canada to Illinois that are best for you.

Fly from

Canada

Fly to

Illinois

Route

Depart

Return

Price

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Fri 20/2

9:15 a.m.-10:05 a.m.

Nonstop1h 50m

Chicago Midway

Mon 23/2

11:00 a.m.-1:42 p.m.

Nonstop1h 42m

C$ 246

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sun 8/2

11:00 a.m.-12:08 p.m.

Nonstop2h 08m

Chicago O'Hare Intl

Mon 16/2

6:28 p.m.-9:21 p.m.

Nonstop1h 53m

C$ 256

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 29/1

9:15 a.m.-10:05 a.m.

Nonstop1h 50m

Chicago Midway

Thu 5/2

11:05 a.m.-1:47 p.m.

Nonstop1h 42m

C$ 256

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 24/2

10:51 a.m.-12:00 p.m.

Nonstop2h 09m

Chicago O'Hare Intl

Fri 27/2

6:28 p.m.-9:21 p.m.

Nonstop1h 53m

C$ 256

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 5/2

5:30 p.m.-6:50 p.m.

Nonstop2h 20m

Chicago O'Hare Intl

Sun 8/2

7:10 a.m.-9:58 a.m.

Nonstop1h 48m

C$ 256

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

1:10 p.m.-2:55 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Tue 17/2

7:15 a.m.-10:20 a.m.

Nonstop2h 05m

C$ 260

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Sat 14/2

12:45 p.m.-6:45 p.m.

1 stop5h 00m

C$ 260

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Wed 18/2

11:00 a.m.-6:45 p.m.

1 stop6h 45m

C$ 260

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

10:15 a.m.-3:20 p.m.

1 stop6h 05m

Chicago Midway

Mon 16/2

4:15 p.m.-10:45 p.m.

1 stop5h 30m

C$ 260

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Fri 20/2

11:00 a.m.-5:45 p.m.

1 stop5h 45m

C$ 260

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

Showing 1-10 of 60 results
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Best time to book a flight from Canada to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Canada 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 Canada to Illinois

What is the cheapest month to book a flight from Canada to Illinois?

Currently, April is the cheapest month in which you can book a flight from Canada to Illinois (average of C$ 113). Flying from Canada to Illinois in December is currently the most expensive (average of C$ 186). 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 CA to IL?

Find hourly flight availability from Canada to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 December 2025.

When flying from Canada to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 21% versus a flight at noon.

What is the cheapest day to fly from Canada to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Canada to Illinois. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Canada to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Canada to Illinois

Explore weekly flight availability from Canada to Illinois. 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 16 December 2025.

The most flights from CA0 to USIL are scheduled on a Monday (60 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 16 December 2025.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAmerican Airlines from Canada to Illinois to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
399 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,094 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
American Airlines
7.2
Good
11,047 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,202 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,531 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

7.9

Food

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

Find useful and relevant information for your journey from Canada to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Canada to Illinois?

    Porter Airlines, United Airlines, and Air Canada can get you from Canada to Illinois in just under 1h 50m. Your travel time will be generally consistent. The distance between Canada and Illinois is about 711 km. Most flights are nonstop.

  • What are the cheapest airlines to fly from Canada to Illinois one-way?

    The cheapest airlines for a one-way flight from Canada to Illinois are WestJet (C$ 116), Porter Airlines (C$ 123), and Air Canada (C$ 155).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Canada to Illinois 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 Canada to Illinois?

    Currently, April is the cheapest month in which you can book a flight from Canada to Illinois (average of C$ 113). Flying from Canada to Illinois in December is currently the most expensive (average of C$ 186). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Canada to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Canada to Illinois

Discover the top 6 airlines that operate flights from Canada to Illinois. 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 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 149AverageC$ 490FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 176AverageC$ 358FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 183AverageC$ 367FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 185AverageC$ 409FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 194AverageC$ 512FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 195AverageC$ 413FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Canada to Illinois?

When you search for this flight from Canada to Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Canada to Illinois?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Canada to Illinois.

Can Cheapflights find flights from Canada to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Canada shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Canada to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Canada to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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