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Cheap flights from Illinois to Calgary from C$ 80

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYC
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Calgary

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Calgary
Explore the most affordable flight options available from Illinois to Calgary. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Thu 11/122:40 p.m.ORD - YYC
1 stop8h 13mUnited Airlines
Sat 13/1212:37 p.m.YYC - ORD
Nonstop3h 33mUnited Airlines
Deal found 10/12C$ 305
Thu 11/121:35 p.m.ORD - YYC
1 stop10h 38mDelta
Thu 15/17:40 a.m.YYC - ORD
1 stop9h 04mDelta
Deal found 11/12C$ 392
Thu 11/121:51 p.m.ORD - YYC
1 stop9h 02mAir Canada
Wed 17/125:35 a.m.YYC - ORD
1 stop8h 35mAir Canada
Deal found 10/12C$ 432
Wed 10/121:50 p.m.MDW - YYC
1 stop8h 07mDelta
Sat 13/126:35 a.m.YYC - MDW
1 stop5h 35mDelta
Deal found 10/12C$ 436
Wed 10/121:35 p.m.ORD - YYC
1 stop10h 38mDelta
Sat 13/122:45 p.m.YYC - ORD
1 stop5h 55mDelta
Deal found 10/12C$ 436
Thu 11/121:35 p.m.ORD - YYC
1 stop10h 38mDelta
Sat 13/126:35 a.m.YYC - ORD
2 stops13h 00mDelta
Deal found 10/12C$ 450
Sat 13/128:11 a.m.ORD - YYC
1 stop14h 34mAmerican Airlines
Sun 14/126:30 a.m.YYC - ORD
1 stop14h 49mAmerican Airlines
Deal found 10/12C$ 492
Thu 11/127:10 a.m.ORD - YYC
1 stop8h 11mUnited Airlines
Wed 17/1212:37 p.m.YYC - ORD
Nonstop3h 33mUnited Airlines
Deal found 10/12C$ 513
Mon 15/123:35 p.m.ORD - YYC
1 stop8h 53mAir Canada
Wed 17/127:10 a.m.YYC - ORD
1 stop7h 00mAir Canada
Deal found 11/12C$ 531
Thu 11/121:50 p.m.MDW - YYC
1 stop8h 07mDelta
Thu 15/17:00 a.m.YYC - MDW
2 stops10h 32mDelta
Deal found 11/12C$ 873
Thu 11/121:50 p.m.MDW - YYC
2 stops10h 23mDelta
Sat 13/127:35 a.m.YYC - MDW
2 stops9h 43mDelta
Deal found 10/12C$ 887
Sat 13/125:34 p.m.STL - YYC
1 stop28h 23mWestJet
Sun 14/1212:15 a.m.YYC - STL
2 stops16h 41mWestJet
Deal found 9/12C$ 975

Find flight deals from Illinois to Calgary

Keep the following information in mind while searching for Illinois to Calgary flight deals. Data was last updated 12 December 2025.

Round-trip from

C$ 212

One-way from

C$ 80

Popular in

December

Cheapest in

October

Average price

C$ 553
WestJet
  • WestJet
  • 12/5-23/5
  • Nonstop
  • 7h 17m total
  • Illinois to Calgary
Search Deals
Air Canada
  • Air Canada
  • 28/1
  • 1 total stop
  • 9h 19m total
  • Illinois to Calgary
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Calgary 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 12 December 2025.
Use the filters below to find and compare flights from Illinois to Calgary that are best for you.

Fly from

Illinois

Fly to

Calgary

Route

Depart

Return

Price

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 17/4

8:46 a.m.-11:37 a.m.

Nonstop3h 51m

Calgary

Sun 19/4

12:40 p.m.-5:07 p.m.

Nonstop3h 27m

C$ 241

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sat 16/5

9:45 p.m.-1:56 p.m.

1 stop17h 11m

Calgary

Sun 24/5

8:30 a.m.-12:50 p.m.

Nonstop3h 20m

C$ 254

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 21/1

5:40 a.m.-1:08 p.m.

1 stop8h 28m

Calgary

Sat 24/1

6:15 a.m.-6:46 p.m.

1 stop11h 31m

C$ 269

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Tue 12/5

9:45 p.m.-1:56 p.m.

1 stop17h 11m

Calgary

Sun 24/5

2:00 p.m.-10:25 p.m.

1 stop7h 25m

C$ 276

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 23/1

12:53 p.m.-9:53 p.m.

1 stop10h 00m

Calgary

Tue 27/1

6:15 a.m.-5:04 p.m.

1 stop9h 49m

C$ 276

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sat 16/5

9:45 p.m.-1:56 p.m.

1 stop17h 11m

Calgary

Sat 23/5

6:20 a.m.-11:57 p.m.

1 stop16h 37m

C$ 276

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Mon 30/3

2:03 p.m.-8:45 p.m.

1 stop7h 42m

Calgary

Wed 1/4

6:45 a.m.-1:23 p.m.

1 stop5h 38m

C$ 346

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Wed 21/1

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

1 stop8h 05m

Calgary

Sat 24/1

6:30 a.m.-4:16 p.m.

1 stop8h 46m

C$ 346

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Wed 25/3

2:03 p.m.-8:45 p.m.

1 stop7h 42m

Calgary

Tue 31/3

6:45 a.m.-1:23 p.m.

1 stop5h 38m

C$ 346

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 16/1

1:50 p.m.-11:02 p.m.

1 stop10h 12m

Calgary

Tue 20/1

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

1 stop10h 25m

C$ 346

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

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Best time to book a flight from Illinois to Calgary

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

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

Currently, April is the cheapest month in which you can book a flight from Illinois to Calgary (average of C$ 110). Flying from Illinois to Calgary in December is currently the most expensive (average of C$ 222). 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 IL to YYC?

Find hourly flight availability from Illinois to Calgary. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 38% on flights from Illinois to Calgary by exploring options for tickets in the evening.

Weekly flight availability from Illinois to Calgary

Explore weekly flight availability from Illinois to Calgary. 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 12 December 2025.

The most flights from USIL to YYC are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Calgary. 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 into for flights to Calgary from Illinois?

    Calgary (YYC), located 9.3 km from the city centre, is the airport you fly into when you book flights from Illinois to Calgary.

  • How long is the flight from Illinois to Calgary?

    There are many flights that can get you from Illinois to Calgary in 3h 51m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. Illinois and Calgary are separated by a distance of 2223 km. Both multi-stop and direct flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 76. Air Canada flights start at C$ 87 while deals on United Airlines start at C$ 87 one-way.

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

    The most popular route from Illinois to Calgary is Chicago O'Hare Intl - Calgary. You may also consider Chicago Midway - Calgary or Moline Quad-City - Calgary.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Calgary on time: Qatar Airways (91%), American Airlines (88%), British Airways (88%).

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Illinois to Calgary (average of C$ 110). Flying from Illinois to Calgary in December is currently the most expensive (average of C$ 222). 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

Travelling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Canmore
Radium Hot Springs
Airdrie
Kananaskis
Drumheller

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Top airline flying from Illinois to Calgary

Discover the top airline that operate flights from Illinois to Calgary. 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 211AverageC$ 392FlexibilityNo cancel feeOn-time60%
Search WestJet 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 Illinois to Calgary?

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

Cheapflights simply makes it quick and affordable to book flights from Illinois to Calgary by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Illinois to Calgary with no change fees.

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

Of course! You can now track prices for flights from Illinois to Calgary 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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