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Cheap flights from Canada to Illinois from C$ 129

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
29 Mar — 5 Apr1
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 27 February 2026.

Fri 10/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 17/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 24/2C$ 196
Fri 29/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Tue 2/65:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 25/2C$ 204
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Thu 7/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 24/2C$ 208
Wed 10/612:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Sat 13/65:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 24/2C$ 215
Fri 14/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Sun 16/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 24/2C$ 216
Thu 9/46:50 a.m.
YUL
-
MDW
1 stop4h 25m
Porter Airlines
Sun 12/44:05 p.m.
MDW
-
YUL
1 stop5h 40m
Porter Airlines
Deal found 25/2C$ 223
Tue 21/46:50 a.m.
YUL
-
MDW
1 stop4h 25m
Porter Airlines
Fri 24/44:05 p.m.
MDW
-
YUL
1 stop5h 40m
Porter Airlines
Deal found 25/2C$ 224
Sat 18/48:45 p.m.
YYC
-
ORD
2 stops13h 08m
Multiple Airlines
Fri 24/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Deal found 24/2C$ 227
Sat 30/58:40 a.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sat 6/67:25 a.m.
ORD
-
YUL
1 stop5h 20m
Air Canada
Deal found 25/2C$ 228
Thu 26/36:50 a.m.
YUL
-
MDW
1 stop4h 15m
Porter Airlines
Mon 30/311:00 a.m.
MDW
-
YUL
1 stop5h 45m
Porter Airlines
Deal found 26/2C$ 228
Thu 12/39:25 a.m.
YUL
-
ORD
Nonstop2h 53m
Air Canada
Mon 16/37:15 a.m.
ORD
-
YUL
Nonstop2h 05m
Air Canada
Deal found 24/2C$ 230
Mon 6/46:50 a.m.
YUL
-
MDW
1 stop4h 25m
Porter Airlines
Thu 16/411:00 a.m.
MDW
-
YUL
1 stop5h 45m
Porter Airlines
Deal found 24/2C$ 230

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 27 February 2026.

Round-trip from

C$ 196

One-way from

C$ 129

Popular in

February

Cheapest in

July

Average price

C$ 395

Good round-trip deal

C$ 285 or less

Good one-way deal

C$ 179 or less
WestJet
  • WestJet
  • 10/4-17/4
  • Nonstop
  • 7h 30m total
  • Canada to Illinois
Search Deals
WestJet
  • WestJet
  • 20/5
  • Nonstop
  • 3h 40m total
  • Canada to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 38 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 February 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 27 February 2026.
Use the filters below to find and compare flights from Canada to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 10/4

8:50 a.m.-9:50 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sun 12/4

9:20 p.m.-11:59 p.m.

Nonstop1h 39m

C$ 272

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 17/4

6:45 p.m.-11:59 p.m.

1 stop6h 14m

Chicago O'Hare Intl

Sun 26/4

5:15 a.m.-11:36 a.m.

1 stop5h 21m

C$ 283

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 4/6

6:35 p.m.-11:26 p.m.

1 stop5h 51m

Chicago O'Hare Intl

Tue 9/6

8:40 a.m.-2:40 p.m.

1 stop5h 00m

C$ 286

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 19/3

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

1 stop6h 00m

Chicago O'Hare Intl

Tue 24/3

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

1 stop5h 26m

C$ 286

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 22/4

4:55 p.m.-6:47 p.m.

Nonstop2h 52m

Chicago O'Hare Intl

Sat 25/4

9:00 a.m.-4:10 p.m.

1 stop6h 10m

C$ 291

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Mon 8/6

10:45 a.m.-2:53 p.m.

1 stop5h 08m

Chicago O'Hare Intl

Wed 10/6

2:00 p.m.-4:41 p.m.

Nonstop1h 41m

C$ 293

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 26/5

9:45 a.m.-11:20 a.m.

Nonstop2h 35m

Chicago O'Hare Intl

Sat 30/5

6:04 p.m.-9:26 p.m.

Nonstop2h 22m

C$ 293

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 10/3

12:45 p.m.-5:01 p.m.

1 stop5h 16m

Chicago O'Hare Intl

Sun 15/3

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

Nonstop1h 48m

C$ 294

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Wed 22/4

12:50 p.m.-10:28 p.m.

1 stop10h 38m

Chicago Midway

Sat 25/4

2:12 p.m.-11:26 p.m.

1 stop8h 14m

C$ 297

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 8/5

5:06 p.m.-8:14 p.m.

1 stop4h 08m

Chicago O'Hare Intl

Sun 10/5

12:30 p.m.-11:41 p.m.

1 stop10h 11m

C$ 298

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/2

Showing 1-10 of 60 resultsSorted by cheapest first
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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$ 109). 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 27 February 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 21 February 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 27 February 2026.

The most flights from CA0 to USIL are scheduled on a Monday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (49 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 27 February 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
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
Porter Airlines
8.0
Very good
419 reviews
Porter Airlines
8.0
Very good
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
United Airlines
7.4
Good
9,351 reviews
Porter Airlines
8.0
Very good
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
American Airlines
7.2
Good
11,357 reviews
Porter Airlines
8.0
Very good
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
WestJet
7.2
Good
3,276 reviews
Porter Airlines
8.0
Very good
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!
Air Canada
7.1
Good
10,750 reviews
Porter Airlines
8.0
Very good
419 reviews
Check prices

Entertainment

6.9

Food

7.6

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

YYJ - YYZ

Always great! The Flight Attendants are always polite and attentive! The Polite was great and reminded us all that it was Valentine's Day!

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, Delta, and Air Canada can get you from Canada to Illinois in just under 2h. Your travel time can differ by up to 4h 14m. The distance between Canada and Illinois is about 702 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$ 116), Porter Airlines (C$ 122), and United Airlines (C$ 138).

  • 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$ 109). 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

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 27 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 112AverageC$ 385FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 121AverageC$ 487FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 145AverageC$ 365FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 166AverageC$ 469FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 169AverageC$ 378FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 176AverageC$ 362FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 383AverageC$ 494FlexibilityNo 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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