Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Calgary to Illinois from C$ 183

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.
YYC — ORD
30 May — 6 Jun1
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 30 April 2026.

Mon 18/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Sun 24/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 29/4C$ 238
Wed 20/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Tue 26/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 29/4C$ 239
Tue 26/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Fri 29/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 28/4C$ 242
Fri 29/56:15 a.m.
YYC
-
ORD
Nonstop3h 30m
American Airlines
Sun 7/68:50 p.m.
ORD
-
YYC
Nonstop3h 52m
American Airlines
Deal found 26/4C$ 275
Thu 28/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Thu 4/65:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 28/4C$ 291
Wed 20/512:34 p.m.
YYC
-
ORD
Nonstop3h 27m
United Airlines
Tue 26/56:00 a.m.
ORD
-
YYC
1 stop16h 48m
United Airlines
Deal found 29/4C$ 297
Thu 4/67:00 a.m.
YYC
-
ORD
Nonstop3h 35m
American Airlines
Sun 7/68:50 p.m.
ORD
-
YYC
Nonstop3h 52m
American Airlines
Deal found 28/4C$ 304
Fri 22/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Fri 12/65:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 25/4C$ 311
Sat 9/57:45 a.m.
YYC
-
ORD
2 stops12h 35m
Delta
Mon 11/512:30 p.m.
ORD
-
YYC
1 stop9h 00m
Delta
Deal found 25/4C$ 316
Wed 13/56:45 a.m.
YYC
-
MDW
1 stop10h 11m
Delta
Sat 16/59:22 a.m.
MDW
-
YYC
2 stops12h 08m
Delta
Deal found 26/4C$ 316
Sat 5/96:35 a.m.
YYC
-
MDW
2 stops14h 11m
Delta
Wed 9/96:00 a.m.
MDW
-
YYC
2 stops18h 06m
Delta
Deal found 27/4C$ 339
Thu 24/127:45 a.m.
YYC
-
MDW
2 stops13h 00m
Delta
Thu 31/1211:20 a.m.
MDW
-
YYC
2 stops12h 53m
Delta
Deal found 28/4C$ 386

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 30 April 2026.

Round-trip from

C$ 238

One-way from

C$ 183

Popular in

March

Cheapest in

November

Average price

C$ 345

Good round-trip deal

C$ 455 or less

Good one-way deal

C$ 290 or less
WestJet
  • WestJet
  • 18/5-24/5
  • Nonstop
  • 7h 35m total
  • Calgary to Illinois
Search Deals
Air Canada
  • Air Canada
  • 26/5
  • 1 total stop
  • 7h 25m total
  • Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 30 April 2026.
Use the filters below to find and compare flights from Calgary to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sat 5/9

6:35 a.m.-9:46 p.m.

2 stops14h 11m

Chicago Midway

Wed 9/9

6:00 a.m.-11:06 p.m.

2 stops18h 06m

C$ 339

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 16/9

7:15 a.m.-6:01 p.m.

1 stop9h 46m

Chicago O'Hare Intl

Mon 21/9

1:55 p.m.-11:06 p.m.

1 stop10h 11m

C$ 376

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 26/8

7:15 a.m.-6:01 p.m.

1 stop9h 46m

Chicago O'Hare Intl

Sun 30/8

1:55 p.m.-11:06 p.m.

1 stop10h 11m

C$ 397

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 22/5

11:00 a.m.-6:05 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Sun 24/5

7:12 a.m.-1:10 p.m.

1 stop6h 58m

C$ 397

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 20/5

1:27 p.m.-11:56 p.m.

1 stop9h 29m

Chicago O'Hare Intl

Sat 6/6

7:42 p.m.-10:37 p.m.

Nonstop3h 55m

C$ 430

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 27/5

7:45 a.m.-6:50 p.m.

1 stop10h 05m

Chicago O'Hare Intl

Wed 3/6

2:11 p.m.-10:57 p.m.

1 stop9h 46m

C$ 431

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Mon 25/5

12:30 a.m.-11:56 a.m.

1 stop10h 26m

Chicago Midway

Sat 13/6

9:17 a.m.-8:50 p.m.

2 stops12h 33m

C$ 454

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Fri 22/5

11:00 a.m.-6:33 p.m.

1 stop6h 33m

Chicago Midway

Sat 13/6

9:17 a.m.-8:50 p.m.

2 stops12h 33m

C$ 454

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 9/5

6:45 a.m.-6:41 p.m.

2 stops10h 56m

Chicago O'Hare Intl

Sun 31/5

2:11 p.m.-10:57 p.m.

1 stop9h 46m

C$ 457

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 29/5

7:45 a.m.-6:50 p.m.

1 stop10h 05m

Chicago O'Hare Intl

Sun 7/6

12:27 p.m.-8:38 p.m.

1 stop9h 11m

C$ 457

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/4

Showing 1-10 of 54 resultsSorted by cheapest first
1
2
3
...
6

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

How far ahead should I book a flight from Calgary to Illinois?

The best time to book flights from Calgary to Illinois is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 85). Flying from Calgary to Illinois in February is currently the most expensive (average of C$ 140). 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 30 April 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 30 April 2026.

The most flights from YYC to USIL are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 30 April 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andWestJet 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
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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
8,463 reviews
Delta
7.9
Good
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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
9,677 reviews
Delta
7.9
Good
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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
3,328 reviews
Delta
7.9
Good
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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
7.1
Good
11,681 reviews
Delta
7.9
Good
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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
10,982 reviews
Delta
7.9
Good
8,463 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

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 9h 29m. 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$ 127 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from C$ 160 and C$ 162, 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: Delta (77%), WestJet (77%), Finnair( 75%).

  • 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$ 1,455, our data indicates the cheapest price to be C$ 261. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 275.

  • 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, March is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 85). Flying from Calgary to Illinois in February is currently the most expensive (average of C$ 140). 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 Calgary to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Calgary to Las Vegas flights
Calgary to Newark flights
Calgary to John F Kennedy Intl flights
Calgary to Los Angeles flights
Edmonton to Las Vegas flights
Calgary to San Francisco flights
Calgary to Sky Harbor Intl flights
Calgary to Seattle flights
Calgary to LaGuardia flights
Calgary to Dallas/Fort Worth flights
Edmonton to Los Angeles flights
Calgary to O'Hare Intl flights
Edmonton to Seattle flights
Edmonton to San Francisco flights
Edmonton to John F Kennedy Intl flights
Calgary to San Diego flights
Calgary to Hobby flights
Calgary to Dulles Intl flights
Edmonton to LaGuardia flights
Edmonton to Newark flights
Calgary to Ontario flights
Edmonton to Dallas/Fort Worth flights
Calgary to Orlando flights
Calgary to George Bush Intcntl flights
Edmonton to Hobby flights
Calgary to Denver flights
Edmonton to Sky Harbor Intl flights
Calgary to Nashville flights
Calgary to Miami flights
Calgary to Fort Lauderdale flights
Edmonton to George Bush Intcntl flights
Calgary to Portland flights
Edmonton to O'Hare Intl flights
Edmonton to Minneapolis flights
Calgary to Atlanta flights
Calgary to Detroit flights
Calgary to Baltimore flights
Calgary to Boston flights
Edmonton to Orlando flights
Edmonton to Ontario flights
Calgary to Kahului flights
Edmonton to Honolulu flights
Edmonton to Denver flights
Calgary to Midway flights
Calgary to Reagan-National flights
Edmonton to Miami flights
Calgary to Love Field flights
Calgary to Honolulu flights
Edmonton to Fort Lauderdale flights
Edmonton to Midway flights

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 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 120AverageC$ 387FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 147AverageC$ 373FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 167AverageC$ 404FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 183AverageC$ 337FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 194AverageC$ 408FlexibilityNo cancel feeOn-time71%
Search American 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.