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Cheap flights from Illinois to Calgary from C$ 123

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.
ORD — YYC
15 Apr — 22 Apr1
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 16 March 2026.

Wed 27/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sat 6/612:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 12/3C$ 324
Thu 30/45:30 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Thu 7/56:30 a.m.
YYC
-
ORD
1 stop9h 29m
Multiple Airlines
Deal found 15/3C$ 329
Tue 26/57:42 p.m.
ORD
-
YYC
Nonstop3h 55m
United Airlines
Wed 27/58:30 a.m.
YYC
-
ORD
Nonstop3h 37m
United Airlines
Deal found 12/3C$ 335
Fri 24/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 13/3C$ 342
Mon 25/56:00 a.m.
ORD
-
YYC
1 stop16h 48m
United Airlines
Sun 31/58:30 a.m.
YYC
-
ORD
Nonstop3h 37m
United Airlines
Deal found 13/3C$ 348
Sun 10/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Mon 18/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 12/3C$ 351
Wed 27/57:42 p.m.
ORD
-
YYC
Nonstop3h 55m
United Airlines
Wed 3/66:00 a.m.
YYC
-
ORD
1 stop13h 30m
United Airlines
Deal found 12/3C$ 355
Thu 30/44:15 p.m.
ORD
-
YYC
1 stop9h 38m
Air Canada
Thu 7/56:30 a.m.
YYC
-
ORD
1 stop7h 25m
Air Canada
Deal found 15/3C$ 358
Tue 28/48:42 a.m.
ORD
-
YYC
Nonstop3h 50m
United Airlines
Sat 2/51:27 p.m.
YYC
-
ORD
1 stop5h 57m
United Airlines
Deal found 12/3C$ 361
Fri 17/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sun 26/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 13/3C$ 362
Mon 27/48:23 p.m.
STL
-
YYC
1 stop15h 37m
Multiple Airlines
Mon 4/59:00 p.m.
YYC
-
STL
2 stops19h 36m
Multiple Airlines
Deal found 13/3C$ 412
Tue 2/69:23 a.m.
MDW
-
YYC
2 stops14h 34m
Delta
Mon 8/66:35 a.m.
YYC
-
MDW
1 stop5h 32m
Delta
Deal found 12/3C$ 418

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 16 March 2026.

Round-trip from

C$ 324

One-way from

C$ 123

Popular in

December

Cheapest in

January

Average price

C$ 477

Good round-trip deal

C$ 182 or less

Good one-way deal

C$ 161 or less
WestJet
  • WestJet
  • 27/5-5/6
  • Nonstop
  • 7h 35m total
  • Illinois to Calgary
Search Deals
WestJet
  • WestJet
  • 27/4
  • Nonstop
  • 3h 55m total
  • Illinois to Calgary
Search Deals
High demand for flights, 4% potential price rise
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 March 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Calgary.
Search Deals
Price to beat on a one-way flight from Illinois to Calgary.
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 16 March 2026.
Use the filters below to find and compare flights from Illinois to Calgary that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sat 6/6

6:00 a.m.-9:48 p.m.

1 stop16h 48m

Calgary

Tue 9/6

8:30 a.m.-1:07 p.m.

Nonstop3h 37m

C$ 388

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Tue 2/6

6:00 a.m.-9:48 p.m.

1 stop16h 48m

Calgary

Tue 9/6

6:00 a.m.-9:39 p.m.

1 stop14h 39m

C$ 409

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sat 16/5

10:15 a.m.-10:57 p.m.

2 stops13h 42m

Calgary

Sun 24/5

6:45 a.m.-4:51 p.m.

1 stop9h 06m

C$ 418
Quickest round-trip

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 2/9

7:45 p.m.-10:36 p.m.

Nonstop3h 51m

Calgary

Tue 8/9

8:30 a.m.-1:05 p.m.

Nonstop3h 35m

C$ 432

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 28/8

6:00 a.m.-6:30 p.m.

1 stop13h 30m

Calgary

Mon 31/8

8:30 a.m.-1:05 p.m.

Nonstop3h 35m

C$ 446

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Thu 3/9

6:00 a.m.-6:30 p.m.

1 stop13h 30m

Calgary

Mon 7/9

8:30 a.m.-1:05 p.m.

Nonstop3h 35m

C$ 446

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 9/9

7:45 p.m.-10:36 p.m.

Nonstop3h 51m

Calgary

Mon 21/9

8:30 a.m.-1:05 p.m.

Nonstop3h 35m

C$ 461

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 14/8

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

1 stop10h 11m

Calgary

Sat 22/8

6:35 a.m.-4:48 p.m.

1 stop9h 13m

C$ 497

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Sat 2/5

2:12 p.m.-8:40 p.m.

1 stop7h 28m

Calgary

Sat 9/5

6:45 a.m.-1:19 p.m.

1 stop5h 34m

C$ 545

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 5/6

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

1 stop9h 00m

Calgary

Mon 8/6

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

1 stop9h 46m

C$ 565

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 59 resultsSorted by cheapest first
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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$ 108). Flying from Illinois to Calgary in December is currently the most expensive (average of C$ 221). 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 16 March 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 37% 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 16 March 2026.

The most flights from USIL to YYC are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 8h 08m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. Illinois and Calgary are separated by a distance of 2297 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$ 78. Air Canada flights start at C$ 86 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 Lambert-St Louis - 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: Air Canada (62%), United Airlines (62%), American Airlines (54%).

  • What are the cheapest flights from Illinois to Calgary?

    The cheapest flight price from Illinois to Calgary is C$ 85. On average you can expect to pay C$ 240. The most popular route, (Chicago O'Hare Intl - Calgary), can usually be booked for C$ 329.

  • 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$ 108). Flying from Illinois to Calgary in December is currently the most expensive (average of C$ 221). 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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Alternative routes for Illinois to Calgary

See prices for flight routes from nearby airports that may be better suited for you.
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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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 221AverageC$ 390FlexibilityNo 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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