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Cheap flights from Canada to Illinois from C$ 139

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Canada to Illinois

Keep the following information in mind while searching for Canada to Illinois flight deals. Data was last updated 14 January 2026.

Round-trip from

C$ 205

One-way from

C$ 139

Popular in

January

Cheapest in

July

Average price

C$ 401

Good round-trip deal

C$ 320 or less

Good one-way deal

C$ 199 or less
WestJet
  • WestJet
  • 27/2-6/3
  • Nonstop
  • 7h 30m total
  • Canada to Illinois
Search Deals
WestJet
  • WestJet
  • 9/3
  • Nonstop
  • 3h 35m total
  • Canada to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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

Find 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 14 January 2026.

Fri 27/29:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 6/32:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 12/1C$ 205
Fri 30/19:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 2/22:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 11/1C$ 229
Fri 6/29:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 13/22:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 12/1C$ 233
Fri 20/29:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 23/22:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 12/1C$ 240
Thu 14/512:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Mon 18/55:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 12/1C$ 246
Wed 26/812:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Sat 29/85:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 13/1C$ 251
Wed 11/29:15 a.m.
YUL
-
ORD
1 stop6h 10m
United Airlines
Wed 18/27:10 a.m.
ORD
-
YUL
1 stop5h 18m
United Airlines
Deal found 12/1C$ 254
Wed 25/22:15 p.m.
YYZ
-
ORD
1 stop5h 37m
Air Canada
Thu 26/26:00 a.m.
ORD
-
YYZ
1 stop5h 47m
Air Canada
Deal found 12/1C$ 255
Thu 5/29:25 a.m.
YUL
-
ORD
Nonstop2h 41m
Air Canada
Sun 8/23:35 p.m.
ORD
-
YUL
Nonstop2h 05m
Air Canada
Deal found 13/1C$ 255
Thu 26/26:45 a.m.
YUL
-
MDW
1 stop4h 20m
Porter Airlines
Thu 5/311:00 a.m.
MDW
-
YUL
1 stop4h 30m
Porter Airlines
Deal found 12/1C$ 255
Thu 5/22:15 p.m.
YYZ
-
ORD
Nonstop1h 55m
Air Canada
Mon 9/22:00 p.m.
ORD
-
YYZ
Nonstop1h 39m
Air Canada
Deal found 12/1C$ 257
Tue 31/36:00 a.m.
YYC
-
ORD
1 stop14h 17m
United Airlines
Wed 8/412:55 p.m.
ORD
-
YYC
1 stop9h 53m
United Airlines
Deal found 13/1C$ 257

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 14 January 2026.
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

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 27/2

9:00 a.m.-1:35 p.m.

Nonstop3h 35m

Chicago O'Hare Intl

Fri 6/3

2:20 p.m.-5:15 p.m.

Nonstop3h 55m

C$ 205

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 28/2

5:30 a.m.-3:10 p.m.

1 stop8h 40m

Chicago O'Hare Intl

Sat 7/3

3:55 p.m.-11:59 p.m.

1 stop9h 04m

C$ 233

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 14/5

12:15 p.m.-4:43 p.m.

Nonstop3h 28m

Chicago O'Hare Intl

Mon 18/5

5:30 p.m.-8:19 p.m.

Nonstop3h 49m

C$ 246

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

7:00 a.m.-12:05 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Wed 18/2

6:00 a.m.-1:28 p.m.

1 stop6h 28m

C$ 254

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Fri 27/2

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

Nonstop1h 50m

Chicago Midway

Sat 21/3

12:45 p.m.-3:27 p.m.

Nonstop1h 42m

C$ 257

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 31/3

6:00 a.m.-9:17 p.m.

1 stop14h 17m

Chicago O'Hare Intl

Wed 8/4

12:55 p.m.-9:48 p.m.

1 stop9h 53m

C$ 257

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Sun 15/2

2:30 p.m.-3:20 p.m.

Nonstop1h 50m

Chicago Midway

Tue 17/3

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

Nonstop1h 42m

C$ 257

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Fri 20/2

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

Nonstop1h 50m

Chicago Midway

Sun 15/3

4:15 p.m.-6:57 p.m.

Nonstop1h 42m

C$ 257

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 19/2

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

Nonstop1h 50m

Chicago Midway

Fri 20/3

4:15 p.m.-6:57 p.m.

Nonstop1h 42m

C$ 257

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Tue 17/2

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

Nonstop1h 50m

Chicago Midway

Sat 21/3

12:45 p.m.-3:27 p.m.

Nonstop1h 42m

C$ 257

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/1

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$ 114). Flying from Canada to Illinois in December is currently the most expensive (average of C$ 189). 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 14 January 2026.

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 evening, which can drop the price by up to 27% 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 10 January 2026.

Travelers seeking maximum savings on their Canada to Illinois flight should consider departing on Friday mornings when fares are most often at their lowest. Saturday afternoons 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 14 January 2026.

The most flights from CA0 to USIL are scheduled on a Monday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 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 14 January 2026.
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
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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
407 reviews
Porter Airlines
8.0
Very good
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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
9,162 reviews
Porter Airlines
8.0
Very good
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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
11,125 reviews
Porter Airlines
8.0
Very good
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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
3,242 reviews
Porter Airlines
8.0
Very good
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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
10,622 reviews
Porter Airlines
8.0
Very good
407 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

7.9

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?

    WestJet, Air Canada, and United Airlines can get you from Canada to Illinois in just under 3h 35m. Your travel time can differ by up to 5h 05m. The distance between Canada and Illinois is about 2223 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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$ 117), Porter Airlines (C$ 124), and Air Canada (C$ 156).

  • 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$ 114). Flying from Canada to Illinois in December is currently the most expensive (average of C$ 189). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 7 airlines flying from Canada to Illinois

Discover the top 7 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 14 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 150AverageC$ 494FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 177AverageC$ 370FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 177AverageC$ 359FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 186AverageC$ 410FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 188AverageC$ 517FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 190AverageC$ 406FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Alaska AirlinesCheapestC$ 389AverageC$ 501FlexibilityNo cancel feeOn-time75%
Search Alaska 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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