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Cheap flights from Illinois to Calgary from C$ 198

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYC
28 Aug — 4 Sep1
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 29 July 2026.

Tue 1/95:30 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Wed 9/91:00 a.m.
YYC
-
ORD
1 stop8h 15m
Multiple Airlines
Deal found 26/7C$ 371
Tue 18/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Fri 28/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 26/7C$ 372
Tue 18/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Thu 27/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 27/7C$ 375
Tue 11/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Mon 24/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 24/7C$ 378
Tue 18/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Wed 19/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 27/7C$ 380
Tue 22/95:30 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Mon 23/111:45 a.m.
YYC
-
ORD
1 stop8h 22m
Multiple Airlines
Deal found 27/7C$ 381
Tue 18/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sat 22/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 24/7C$ 384
Tue 11/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Fri 28/811:55 p.m.
YYC
-
ORD
1 stop12h 27m
Multiple Airlines
Deal found 24/7C$ 385
Sun 23/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sat 29/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 25/7C$ 387
Mon 24/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sat 29/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 24/7C$ 389
Sun 16/85:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Sat 29/812:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 26/7C$ 392
Mon 24/86:17 p.m.
STL
-
YYC
1 stop28h 33m
Multiple Airlines
Mon 31/87:00 a.m.
YYC
-
STL
1 stop9h 22m
Multiple Airlines
Deal found 25/7C$ 436

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 29 July 2026.

Round-trip from

C$ 371

One-way from

C$ 198

Popular in

July

Cheapest in

January

Average price

C$ 633

Good round-trip deal

C$ 219 or less

Good one-way deal

C$ 239 or less
Air Canada
  • Air Canada
  • 1/9-9/9
  • 1 total stop
  • 12h 10m total
  • Illinois to Calgary
Search Deals
Delta
  • Delta
  • 30/9
  • 1 total stop
  • 7h 42m total
  • Illinois to Calgary
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 29 July 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

Tue 18/8

7:46 p.m.-10:37 p.m.

Nonstop3h 51m

Calgary

Tue 25/8

5:50 a.m.-2:44 p.m.

1 stop7h 54m

C$ 409

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sun 16/8

5:55 a.m.-9:48 p.m.

1 stop16h 53m

Calgary

Sat 29/8

12:34 p.m.-5:06 p.m.

Nonstop3h 32m

C$ 411

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Thu 13/8

8:44 a.m.-11:32 a.m.

Nonstop3h 48m

Calgary

Mon 17/8

6:00 a.m.-11:59 p.m.

1 stop16h 59m

C$ 419
Quickest round-trip

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sat 24/10

8:40 a.m.-11:28 a.m.

Nonstop3h 48m

Calgary

Wed 28/10

12:37 p.m.-5:10 p.m.

Nonstop3h 33m

C$ 430

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Thu 29/10

8:40 a.m.-11:35 a.m.

Nonstop3h 55m

Calgary

Mon 2/11

12:37 p.m.-4:10 p.m.

Nonstop3h 33m

C$ 432

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 12/8

5:55 a.m.-9:48 p.m.

1 stop16h 53m

Calgary

Sat 22/8

6:00 a.m.-7:30 p.m.

1 stop12h 30m

C$ 432

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Tue 1/9

7:46 p.m.-10:37 p.m.

Nonstop3h 51m

Calgary

Wed 9/9

1:00 a.m.-10:15 a.m.

1 stop8h 15m

C$ 457

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Tue 8/12

12:30 p.m.-9:54 p.m.

1 stop9h 24m

Calgary

Fri 11/12

7:45 a.m.-3:50 p.m.

1 stop8h 05m

C$ 460

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 18/9

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

1 stop13h 35m

Calgary

Tue 22/9

6:00 a.m.-8:22 p.m.

1 stop13h 22m

C$ 471

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Tue 10/11

9:59 a.m.-12:17 a.m.

2 stops14h 18m

Calgary

Mon 16/11

7:14 a.m.-5:05 p.m.

1 stop9h 51m

C$ 474

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 56 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, January is the cheapest month in which you can book a flight from Illinois to Calgary (average of C$ 316). Flying from Illinois to Calgary in July is currently the most expensive (average of C$ 633). 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 29 July 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 45% on flights from Illinois to Calgary by exploring options for tickets at noon.

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 29 July 2026.

The most flights from USIL to YYC are scheduled on a Tuesday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

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

Airfare is below average for this route at the moment.
Illinois to Calgary flights typically cost between C$ 381 and C$ 686 in September.
The cheapest round-trip price found within the last 5 days was C$ 371 on Multiple Airlines (1 Sep-9 Sep).

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

To ensure you get the cheapest price possible for a flight from Illinois to Calgary, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 9h 24m. Fly via United Airlines, Delta, or WestJet to get the fastest option. Illinois and Calgary are separated by a distance of 2247 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$ 80. United Airlines flights start at C$ 90 while deals on American Airlines start at C$ 187 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: American Airlines (82%), Envoy Air (80%), Air Canada (77%).

  • What are the cheapest flights from Illinois to Calgary?

    The cheapest flight price from Illinois to Calgary is C$ 193. On average you can expect to pay C$ 407. The most popular route, (Chicago O'Hare Intl - Calgary), can usually be booked for C$ 396.

  • 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, January is the cheapest month in which you can book a flight from Illinois to Calgary (average of C$ 316). Flying from Illinois to Calgary in July is currently the most expensive (average of C$ 633). 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
Kananaskis
Airdrie
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 2 airlines flying from Illinois to Calgary

Discover the top 2 airlines 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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 144AverageC$ 527FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 260AverageC$ 499FlexibilityNo 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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