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Cheap flights from Illinois to Calgary from C$ 97

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYC
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Illinois to Calgary

Keep the following information in mind while searching for Illinois to Calgary flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 193

One-way from

C$ 97

Popular in

December

Cheapest in

May

Average price

C$ 358

Good round-trip deal

C$ 212 or less

Good one-way deal

C$ 80 or less
WestJet
  • WestJet
  • 10/10-17/10
  • Nonstop
  • 7h 17m total
  • Illinois to Calgary
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WestJet
  • WestJet
  • 7/11
  • Nonstop
  • 3h 55m total
  • Illinois to Calgary
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 161 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Calgary.
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Price to beat on a one-way flight from Illinois to Calgary.
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Find flight deals from Illinois to Calgary

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 11 September 2025.

Fri 10/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Fri 17/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 10/9C$ 193
Sat 11/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Sat 18/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 194
Fri 10/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Thu 16/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 197
Sun 12/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Sat 18/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 198
Sat 11/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Sun 12/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 202
Fri 31/102:20 p.m.ORD - YYC
Nonstop3h 55mWestJet
Mon 3/119:00 a.m.YYC - ORD
Nonstop3h 35mWestJet
Deal found 9/9C$ 204
Mon 6/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Thu 16/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 205
Sun 26/102:20 p.m.ORD - YYC
Nonstop3h 55mWestJet
Sun 2/119:00 a.m.YYC - ORD
Nonstop3h 35mWestJet
Deal found 11/9C$ 206
Thu 9/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Sat 18/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 208
Thu 23/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Sun 26/109:00 a.m.YYC - ORD
Nonstop3h 35mWestJet
Deal found 9/9C$ 209
Fri 24/103:50 p.m.ORD - YYC
1 stop8h 32mMultiple Airlines
Fri 31/109:00 a.m.YYC - ORD
Nonstop3h 35mMultiple Airlines
Deal found 9/9C$ 211
Thu 9/105:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Fri 17/1012:15 p.m.YYC - ORD
Nonstop3h 28mWestJet
Deal found 9/9C$ 212

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 11 September 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

Wed 5/11

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

Calgary

Tue 11/11

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

Nonstop3h 33m

C$ 256

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Thu 6/11

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

Calgary

Tue 11/11

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

Nonstop3h 33m

C$ 256

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Fri 31/10

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

Calgary

Mon 3/11

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

Nonstop3h 33m

C$ 256

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 10/12

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

Calgary

Mon 15/12

5:45 a.m.-3:10 p.m.

1 stop8h 25m

C$ 273

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Wed 24/9

8:48 a.m.-11:38 a.m.

Nonstop3h 50m

Calgary

Wed 1/10

12:38 p.m.-5:10 p.m.

Nonstop3h 32m

C$ 292

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Mon 20/10

9:44 p.m.-1:53 p.m.

1 stop17h 09m

Calgary

Mon 27/10

11:40 p.m.-9:15 a.m.

1 stop8h 35m

C$ 294

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Wed 8/10

1:48 p.m.-8:47 p.m.

1 stop7h 59m

Calgary

Sun 12/10

6:45 a.m.-5:43 p.m.

1 stop9h 58m

C$ 348

ChicagoCalgary

MDW - YYC

MDWYYC

Chicago Midway

Sat 4/10

9:20 a.m.-1:32 p.m.

1 stop5h 12m

Calgary

Sun 12/10

6:45 a.m.-5:43 p.m.

1 stop9h 58m

C$ 348

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Sun 11/1

1:55 p.m.-11:15 p.m.

1 stop10h 20m

Calgary

Sat 31/1

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

1 stop9h 13m

C$ 348

ChicagoCalgary

ORD - YYC

ORDYYC

Chicago O'Hare Intl

Tue 4/11

1:55 p.m.-11:02 p.m.

1 stop10h 07m

Calgary

Sun 9/11

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

1 stop10h 00m

C$ 348

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 55 results
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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$ 138). Flying from Illinois to Calgary in July is currently the most expensive (average of C$ 263). 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 11 September 2025.

When flying from Illinois to Calgary, 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 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 11 September 2025.

The most flights from USIL to YYC are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 50m. 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 United Airlines, which is currently one of the cheapest options available, starting at C$ 97. WestJet flights start at C$ 97 while deals on Delta start at C$ 139 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: Qatar Airways (70%), Air Canada (69%), United Airlines (69%).

  • What are the cheapest flights from Illinois to Calgary?

    The cheapest flight price from Illinois to Calgary is C$ 40. On average you can expect to pay C$ 235. The most popular route, (Chicago O'Hare Intl - Calgary), can usually be booked for C$ 244.

  • 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$ 138). Flying from Illinois to Calgary in July is currently the most expensive (average of C$ 263). 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
Airdrie
Radium Hot Springs
Drumheller
Kananaskis

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Alternative routes for Illinois to Calgary

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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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 212AverageC$ 381FlexibilityNo 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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