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Cheap flights from Calgary to Illinois from C$ 136

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Calgary to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Calgary to Illinois
Explore the most affordable flight options available from Calgary to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Mon 27/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Fri 1/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 28/1C$ 247
Sat 7/35:35 a.m.
YYC
-
ORD
1 stop8h 35m
Air Canada
Tue 10/33:55 p.m.
ORD
-
YYC
1 stop9h 04m
Air Canada
Deal found 27/1C$ 267
Thu 16/712:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Fri 17/75:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 27/1C$ 293
Thu 5/311:40 p.m.
YYC
-
ORD
1 stop8h 33m
Air Canada
Sat 7/33:55 p.m.
ORD
-
YYC
1 stop9h 04m
Air Canada
Deal found 28/1C$ 295
Mon 29/612:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Tue 7/75:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 28/1C$ 296
Wed 22/712:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Sat 25/75:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 27/1C$ 301
Wed 22/712:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Mon 27/75:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 27/1C$ 307
Tue 24/21:40 p.m.
YYC
-
ORD
Nonstop3h 40m
American Airlines
Tue 3/35:00 a.m.
ORD
-
YYC
1 stop7h 44m
American Airlines
Deal found 26/1C$ 316
Tue 31/39:00 a.m.
YYC
-
ORD
1 stop8h 53m
Air Canada
Wed 8/410:43 a.m.
ORD
-
YYC
1 stop10h 15m
Air Canada
Deal found 27/1C$ 322
Sat 9/56:35 a.m.
YYC
-
ORD
1 stop9h 13m
Delta
Mon 11/51:55 p.m.
ORD
-
YYC
1 stop10h 11m
Delta
Deal found 28/1C$ 323
Wed 5/812:15 p.m.
YYC
-
ORD
Nonstop3h 28m
WestJet
Sun 9/85:30 p.m.
ORD
-
YYC
Nonstop3h 49m
WestJet
Deal found 28/1C$ 324
Fri 27/37:00 a.m.
YYC
-
ORD
1 stop9h 44m
Multiple Airlines
Fri 3/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Deal found 27/1C$ 326

Find flight deals from Calgary to Illinois

Keep the following information in mind while searching for Calgary to Illinois flight deals. Data was last updated 29 January 2026.

Round-trip from

C$ 247

One-way from

C$ 136

Popular in

July

Cheapest in

April

Average price

C$ 318

Good round-trip deal

C$ 525 or less

Good one-way deal

C$ 230 or less
WestJet
  • WestJet
  • 27/4-1/5
  • Nonstop
  • 7h 35m total
  • Calgary to Illinois
Search Deals
WestJet
  • WestJet
  • 26/4
  • Nonstop
  • 3h 40m total
  • Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 17 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 Calgary to Illinois.
Search Deals
Price to beat on a one-way flight from Calgary to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Calgary 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 29 January 2026.
Use the filters below to find and compare flights from Calgary to Illinois that are best for you.

Fly from

Calgary

Fly to

Illinois

Route

Depart

Return

Price

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 24/2

6:30 a.m.-6:01 p.m.

1 stop10h 31m

Chicago O'Hare Intl

Tue 3/3

11:18 a.m.-8:54 p.m.

2 stops10h 36m

C$ 341

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Tue 24/2

6:30 a.m.-1:05 p.m.

1 stop5h 35m

Chicago Midway

Tue 3/3

1:49 p.m.-8:54 p.m.

1 stop8h 05m

C$ 341

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mon 20/4

7:40 a.m.-6:07 p.m.

1 stop9h 27m

Chicago O'Hare Intl

Fri 24/4

2:09 p.m.-11:00 p.m.

1 stop9h 51m

C$ 372

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 3/4

7:00 a.m.-5:44 p.m.

1 stop9h 44m

Chicago O'Hare Intl

Fri 17/4

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

Nonstop3h 55m

C$ 387

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 10/2

6:15 a.m.-2:55 p.m.

1 stop7h 40m

Chicago O'Hare Intl

Tue 17/2

8:41 a.m.-11:31 a.m.

Nonstop3h 50m

C$ 387

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 24/2

6:30 a.m.-4:41 p.m.

2 stops9h 11m

Chicago O'Hare Intl

Fri 27/2

1:20 p.m.-11:05 p.m.

1 stop10h 45m

C$ 388

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 6/3

7:40 a.m.-5:42 p.m.

1 stop9h 02m

Chicago O'Hare Intl

Mon 9/3

1:19 p.m.-11:02 p.m.

1 stop10h 43m

C$ 422

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sat 7/3

6:30 a.m.-4:14 p.m.

1 stop8h 44m

Chicago Midway

Tue 10/3

9:35 a.m.-8:45 p.m.

2 stops12h 10m

C$ 422

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 8/2

6:30 a.m.-5:55 p.m.

1 stop10h 25m

Chicago O'Hare Intl

Sat 14/2

8:50 a.m.-11:05 p.m.

2 stops15h 15m

C$ 425

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Tue 10/2

6:30 a.m.-1:06 p.m.

1 stop5h 36m

Chicago Midway

Sat 14/2

11:45 a.m.-11:05 p.m.

2 stops12h 20m

C$ 425

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/1

Showing 1-10 of 54 results
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Best time to book a flight from Calgary to Illinois

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

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

Currently, April is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 138). Flying from Calgary to Illinois in July is currently the most expensive (average of C$ 210). 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 YYC to IL?

Find hourly flight availability from Calgary 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 29 January 2026.

When flying from Calgary to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Calgary to Illinois

Explore weekly flight availability from Calgary 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 29 January 2026.

The most flights from YYC to USIL are scheduled on a Wednesday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Calgary to Illinois?

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 29 January 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Calgary to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,127 reviews
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,215 reviews
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,206 reviews
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,253 reviews
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,667 reviews
Delta
7.9
Good
8,127 reviews
Check prices

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

  • What airport do you fly from for flights from Calgary to Illinois?

    If you book a flight to Illinois from Calgary, you will be flying from Calgary, which is the city’s only airport. Calgary (YYC) is located 9.3 km from the centre of Calgary.

  • How long is the flight from Calgary to Illinois?

    There are many flights that can get you from Calgary to Illinois in 7h 40m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. There are 2223 km between Calgary and Illinois. This flight may include one or multiple stops.

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

    C$ 126 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and American Airlines, with prices starting from C$ 153 and C$ 159, respectively.

  • What are the most popular routes from Calgary to Illinois?

    While some choose either Calgary - Chicago Midway or Calgary - Lambert-St Louis, Calgary - Chicago O'Hare Intl is the most popular route from Calgary to Illinois.

  • What are the most reliable airlines from Calgary to Illinois?

    Before booking your flight to Illinois from Calgary, check out the most reliable airlines to get you to your destination on time: WestJet (77%), Delta (76%), Air Canada( 65%).

  • What are the cheapest flights from Calgary to Illinois?

    Looking for the cheapest flight from Calgary to Illinois? While on average our users pay C$ 1,731, our data indicates the cheapest price to be C$ 140. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 307.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 138). Flying from Calgary to Illinois in July is currently the most expensive (average of C$ 210). 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

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Alternative routes for Calgary to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Calgary to Illinois

Discover the top 5 airlines that operate flights from Calgary 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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 146AverageC$ 335FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 146AverageC$ 304FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 168AverageC$ 354FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 172AverageC$ 253FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 175AverageC$ 442FlexibilityNo 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 Calgary to Illinois?

When you search for this flight from Calgary 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 Calgary to Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Calgary.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Calgary to Illinois flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Calgary to Illinois and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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