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Cheap flights from Canada to Illinois from C$ 137

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 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ORD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 206

One-way from

C$ 137

Popular in

December

Cheapest in

July

Average price

C$ 351

Good round-trip deal

C$ 241 or less

Good one-way deal

C$ 211 or less
WestJet
  • WestJet
  • 17/10-18/10
  • 2 total stops
  • 14h 49m total
  • Canada to Illinois
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WestJet
  • WestJet
  • 30/10
  • 2 total stops
  • 22h 00m total
  • Canada to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 42 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 September 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

Find flight deals from Canada to Illinois

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 15 September 2025.

Sun 12/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Sun 19/105:30 p.m.ORD - YVR
1 stop8h 41mWestJet
Deal found 13/9C$ 206
Fri 24/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Mon 27/102:20 p.m.ORD - YVR
1 stop7h 25mWestJet
Deal found 15/9C$ 213
Fri 3/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Sun 5/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Deal found 15/9C$ 216
Sun 12/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Fri 17/105:30 p.m.ORD - YVR
1 stop7h 06mWestJet
Deal found 14/9C$ 217
Fri 17/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Mon 27/102:20 p.m.ORD - YVR
1 stop7h 25mWestJet
Deal found 14/9C$ 221
Sun 26/109:00 a.m.YYC - ORD
Nonstop3h 35mWestJet
Sat 1/118:45 a.m.ORD - YYC
Nonstop3h 50mWestJet
Deal found 13/9C$ 222
Thu 16/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Thu 23/105:30 p.m.ORD - YVR
1 stop8h 41mWestJet
Deal found 15/9C$ 222
Thu 30/106:00 a.m.YQB - ORD
1 stop6h 18mAir Canada
Thu 6/113:55 p.m.ORD - YQB
1 stop5h 48mAir Canada
Deal found 15/9C$ 224
Tue 28/108:30 a.m.YVR - ORD
Nonstop4h 11mAir Canada
Tue 4/113:40 p.m.ORD - YVR
Nonstop4h 35mAir Canada
Deal found 13/9C$ 224
Sun 12/107:00 a.m.YVR - ORD
1 stop7h 43mWestJet
Fri 24/105:30 p.m.ORD - YVR
1 stop7h 06mWestJet
Deal found 15/9C$ 228
Tue 28/101:29 p.m.YYC - ORD
Nonstop3h 25mAmerican Airlines
Tue 4/118:45 p.m.ORD - YYC
1 stop15h 59mAmerican Airlines
Deal found 13/9C$ 232
Sun 26/109:00 a.m.YYC - ORD
Nonstop3h 35mMultiple Airlines
Sat 1/118:45 a.m.ORD - YYC
Nonstop3h 50mMultiple Airlines
Deal found 13/9C$ 236

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 15 September 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

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 3/10

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

Nonstop3h 28m

Chicago O'Hare Intl

Sun 5/10

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

Nonstop3h 49m

C$ 216

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 26/10

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

Nonstop3h 35m

Chicago O'Hare Intl

Sat 1/11

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

C$ 222

Québec CityChicago

YQB - ORD

YQBORD

Québec City

Thu 30/10

6:00 a.m.-11:18 a.m.

1 stop6h 18m

Chicago O'Hare Intl

Thu 6/11

3:55 p.m.-10:43 p.m.

1 stop5h 48m

C$ 224

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 26/10

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

Nonstop3h 35m

Chicago O'Hare Intl

Sat 1/11

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

C$ 236

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 11/12

12:35 p.m.-5:10 p.m.

Nonstop3h 35m

Chicago O'Hare Intl

Mon 15/12

7:10 a.m.-9:53 p.m.

1 stop15h 43m

C$ 238

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mon 2/2

12:37 p.m.-5:08 p.m.

Nonstop3h 31m

Chicago O'Hare Intl

Mon 9/2

1:55 p.m.-9:53 p.m.

1 stop8h 58m

C$ 238

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 2/1

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

Nonstop3h 35m

Chicago O'Hare Intl

Mon 5/1

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

Nonstop3h 55m

C$ 240

Québec CityChicago

YQB - ORD

YQBORD

Québec City

Thu 30/10

5:10 p.m.-11:34 p.m.

1 stop7h 24m

Chicago O'Hare Intl

Mon 3/11

10:46 a.m.-2:13 p.m.

Nonstop2h 27m

C$ 245

VancouverChicago

YVR - ORD

YVRORD

Vancouver Intl

Fri 17/10

2:20 p.m.-10:39 p.m.

1 stop6h 19m

Chicago O'Hare Intl

Sat 18/10

8:51 a.m.-11:33 a.m.

Nonstop4h 42m

C$ 246

Québec CityChicago

YQB - ORD

YQBORD

Québec City

Fri 28/11

5:00 a.m.-9:13 a.m.

1 stop5h 13m

Chicago O'Hare Intl

Mon 1/12

12:50 p.m.-6:14 p.m.

1 stop4h 24m

C$ 249

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

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, January is the cheapest month in which you can book a flight from Canada to Illinois (average of C$ 261). Flying from Canada to Illinois in March is currently the most expensive (average of C$ 348). 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 15 September 2025.

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

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 15 September 2025.

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 (52 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 15 September 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
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,929 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,091 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

7.9

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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 28m. Your travel time can differ by up to 2h 50m. 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 United Airlines (C$ 142), Air Canada (C$ 142), and Porter Airlines (C$ 188).

  • 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, January is the cheapest month in which you can book a flight from Canada to Illinois (average of C$ 261). Flying from Canada to Illinois in March is currently the most expensive (average of C$ 348). 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 149AverageC$ 499FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 176AverageC$ 453FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 177AverageC$ 441FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 184AverageC$ 476FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 196AverageC$ 373FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 209AverageC$ 522FlexibilityNo cancel feeOn-time69%
Search United 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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