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Cheap flights from Canada to Illinois from C$ 146

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 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
19 Feb — 26 Feb1
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 20 January 2026.

Fri 6/39:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 9/32:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 20/1C$ 229
Fri 27/29:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 6/32:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 19/1C$ 230
Fri 6/39:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 13/32:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 20/1C$ 239
Tue 21/41:27 p.m.
YYC
-
ORD
1 stop10h 03m
United Airlines
Tue 28/48:42 a.m.
ORD
-
YYC
Nonstop3h 50m
United Airlines
Deal found 19/1C$ 243
Sat 14/28:55 a.m.
YUL
-
MDW
1 stop4h 00m
Porter Airlines
Wed 18/211:05 a.m.
MDW
-
YUL
1 stop5h 40m
Porter Airlines
Deal found 19/1C$ 253
Wed 11/26:00 a.m.
YUL
-
ORD
Nonstop3h 05m
United Airlines
Thu 19/27:10 a.m.
ORD
-
YUL
1 stop5h 18m
United Airlines
Deal found 20/1C$ 254
Tue 31/36:00 a.m.
YYC
-
ORD
1 stop14h 17m
United Airlines
Wed 8/42:30 p.m.
ORD
-
YYC
1 stop8h 18m
United Airlines
Deal found 19/1C$ 257
Tue 10/211:00 a.m.
YYZ
-
ORD
Nonstop2h 08m
United Airlines
Tue 17/26:28 p.m.
ORD
-
YYZ
Nonstop1h 53m
United Airlines
Deal found 20/1C$ 262
Mon 9/29:15 a.m.
YUL
-
ORD
1 stop15h 24m
United Airlines
Sun 15/210:35 a.m.
ORD
-
YUL
Nonstop2h 25m
United Airlines
Deal found 19/1C$ 262
Thu 19/26:45 a.m.
YYZ
-
ORD
Nonstop2h 15m
United Airlines
Mon 23/21:12 p.m.
ORD
-
YYZ
Nonstop1h 50m
United Airlines
Deal found 18/1C$ 264
Tue 3/29:20 a.m.
YTZ
-
MDW
Nonstop1h 50m
Porter Airlines
Tue 10/211:05 a.m.
MDW
-
YTZ
Nonstop1h 42m
Porter Airlines
Deal found 19/1C$ 265
Tue 21/46:00 a.m.
YYC
-
ORD
1 stop7h 55m
Air Canada
Tue 28/48:40 a.m.
ORD
-
YYC
1 stop8h 34m
Air Canada
Deal found 19/1C$ 269

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 20 January 2026.

Round-trip from

C$ 230

One-way from

C$ 146

Popular in

January

Cheapest in

July

Average price

C$ 407

Good round-trip deal

C$ 284 or less

Good one-way deal

C$ 197 or less
WestJet
  • WestJet
  • 27/2-6/3
  • Nonstop
  • 7h 30m total
  • Canada to Illinois
Search Deals
United Airlines
  • United Airlines
  • 26/5
  • Nonstop
  • 3h 20m total
  • Canada to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 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

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 20 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

Tue 21/4

1:27 p.m.-12:30 a.m.

1 stop10h 03m

Chicago O'Hare Intl

Tue 28/4

8:42 a.m.-11:32 a.m.

Nonstop3h 50m

C$ 243

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

4:45 p.m.-6:51 p.m.

Nonstop3h 06m

Chicago O'Hare Intl

Wed 18/2

1:02 p.m.-7:48 p.m.

1 stop5h 46m

C$ 254

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

6:00 a.m.-8:05 a.m.

Nonstop3h 05m

Chicago O'Hare Intl

Tue 17/2

7:10 a.m.-1:28 p.m.

1 stop5h 18m

C$ 254

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

6:00 a.m.-8:05 a.m.

Nonstop3h 05m

Chicago O'Hare Intl

Thu 19/2

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

1 stop6h 28m

C$ 254

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 12/2

6:45 a.m.-8:00 a.m.

Nonstop2h 15m

Chicago O'Hare Intl

Tue 17/2

9:15 p.m.-11:59 p.m.

Nonstop1h 44m

C$ 262

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 12/2

6:45 a.m.-8:00 a.m.

Nonstop2h 15m

Chicago O'Hare Intl

Sat 14/2

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

Nonstop1h 53m

C$ 262

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 12/2

9:20 a.m.-10:10 a.m.

Nonstop1h 50m

Chicago Midway

Thu 19/2

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

Nonstop1h 42m

C$ 276

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

9:15 a.m.-2:20 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Thu 19/2

8:50 a.m.-3:16 p.m.

1 stop5h 26m

C$ 276

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 19/2

9:20 a.m.-10:10 a.m.

Nonstop1h 50m

Chicago Midway

Mon 23/2

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

Nonstop1h 42m

C$ 279

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 29/4

5:45 a.m.-3:10 p.m.

1 stop8h 25m

Chicago O'Hare Intl

Sat 2/5

9:55 a.m.-6:43 p.m.

1 stop9h 48m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/1

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 20 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 17 January 2026.

Travelers seeking maximum savings on their Canada to Illinois flight should consider departing on Monday 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 20 January 2026.

The most flights from CA0 to USIL are scheduled on a Monday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (54 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 20 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
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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
9,188 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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
11,169 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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
3,247 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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
10,644 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Comfort

7.9

Crew

8.6

Overall

7.9

Food

7.5

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?

    United Airlines, Porter Airlines, and Air Transat can get you from Canada to Illinois in just under 1h 50m. Your travel time can differ by up to 8h 13m. The distance between Canada and Illinois is about 711 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 20 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 147AverageC$ 368FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 150AverageC$ 486FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 172AverageC$ 386FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 176AverageC$ 357FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 179AverageC$ 510FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 190AverageC$ 379FlexibilityNo 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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