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Cheap flights from Calgary to Illinois from C$ 128

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
11 Jan — 18 Jan1
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 12 December 2025.

Thu 11/125:35 a.m.YYC - ORD
1 stop8h 35mAir Canada
Mon 15/127:05 a.m.ORD - YYC
1 stop17h 23mAir Canada
Deal found 11/12C$ 357
Thu 11/1212:45 p.m.YYC - ORD
1 stop9h 41mAmerican Airlines
Mon 15/125:18 a.m.ORD - YYC
1 stop7h 26mAmerican Airlines
Deal found 11/12C$ 485
Mon 15/122:45 p.m.YYC - ORD
1 stop5h 55mDelta
Wed 17/127:50 a.m.ORD - YYC
1 stop11h 00mDelta
Deal found 10/12C$ 632
Thu 25/127:10 a.m.YYC - ORD
1 stop7h 00mAir Canada
Tue 30/122:00 p.m.ORD - YYC
1 stop7h 39mAir Canada
Deal found 10/12C$ 710
Fri 26/129:00 a.m.YYC - ORD
Nonstop3h 35mWestJet
Tue 30/126:30 p.m.ORD - YYC
2 stops25h 45mWestJet
Deal found 10/12C$ 735
Wed 24/1211:40 p.m.YYC - ORD
1 stop12h 21mAir Canada
Tue 30/122:00 p.m.ORD - YYC
1 stop7h 39mAir Canada
Deal found 10/12C$ 743
Mon 29/127:35 p.m.YYC - MDW
1 stop13h 44mMultiple Airlines
Wed 31/122:16 p.m.MDW - YYC
2 stops23h 04mMultiple Airlines
Deal found 10/12C$ 1,066
Mon 29/1211:40 p.m.YYC - MDW
2 stops16h 39mWestJet
Wed 31/129:50 a.m.MDW - YYC
2 stops31h 10mWestJet
Deal found 10/12C$ 1,121
Thu 11/126:35 a.m.YYC - MDW
1 stop10h 43mWestJet
Mon 15/1210:49 a.m.MDW - YYC
1 stop9h 20mWestJet
Deal found 10/12C$ 1,241
Mon 15/126:35 a.m.YYC - MDW
1 stop5h 35mWestJet
Wed 17/1210:49 a.m.MDW - YYC
1 stop9h 20mWestJet
Deal found 10/12C$ 1,382
Thu 11/124:30 p.m.YYC - MDW
1 stop16h 35mMultiple Airlines
Mon 15/1211:00 a.m.MDW - YYC
1 stop9h 35mMultiple Airlines
Deal found 11/12C$ 2,226

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 12 December 2025.

Round-trip from

C$ 208

One-way from

C$ 128

Popular in

July

Cheapest in

April

Average price

C$ 393

Good round-trip deal

C$ 618 or less

Good one-way deal

C$ 178 or less
WestJet
  • WestJet
  • 20/2-23/2
  • Nonstop
  • 7h 30m total
  • Calgary to Illinois
Search Deals
WestJet
  • WestJet
  • 12/1
  • Nonstop
  • 3h 35m total
  • Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 2025.
Use the filters below to find and compare flights from Calgary to Illinois that are best for you.

Fly from

Calgary

Fly to

Illinois

Route

Depart

Return

Price

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 15/1

5:35 a.m.-3:10 p.m.

1 stop8h 35m

Chicago O'Hare Intl

Wed 21/1

3:55 p.m.-12:14 a.m.

1 stop9h 19m

C$ 218

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 15/1

8:45 p.m.-9:13 a.m.

2 stops11h 28m

Chicago O'Hare Intl

Wed 21/1

7:00 a.m.-2:21 p.m.

1 stop8h 21m

C$ 226

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 26/5

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

Nonstop3h 20m

Chicago O'Hare Intl

Sat 30/5

7:15 a.m.-9:38 p.m.

1 stop15h 23m

C$ 250

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 15/2

6:15 a.m.-6:55 p.m.

1 stop11h 40m

Chicago O'Hare Intl

Tue 17/2

7:10 a.m.-9:53 p.m.

1 stop15h 43m

C$ 258

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 15/1

6:15 a.m.-11:59 p.m.

1 stop16h 44m

Chicago O'Hare Intl

Wed 21/1

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

Nonstop3h 50m

C$ 272

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 14/1

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

1 stop11h 31m

Chicago O'Hare Intl

Sun 18/1

8:45 a.m.-9:53 p.m.

1 stop14h 08m

C$ 283

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 26/5

12:15 p.m.-4:43 p.m.

Nonstop3h 28m

Chicago O'Hare Intl

Sat 30/5

5:30 p.m.-8:19 p.m.

Nonstop3h 49m

C$ 284

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 15/1

6:15 a.m.-7:51 p.m.

1 stop12h 36m

Chicago O'Hare Intl

Wed 21/1

8:45 a.m.-2:21 p.m.

1 stop6h 36m

C$ 284

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Wed 14/1

6:30 a.m.-1:09 p.m.

1 stop5h 39m

Chicago Midway

Sun 18/1

9:50 a.m.-11:02 p.m.

2 stops14h 12m

C$ 308

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sat 24/1

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

1 stop8h 46m

Chicago Midway

Sat 31/1

11:45 a.m.-8:54 p.m.

1 stop10h 09m

C$ 335

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 38 results
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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

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

Currently, April is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 149). Flying from Calgary to Illinois in July is currently the most expensive (average of C$ 214). 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 12 December 2025.

It’s typically best to fly out from Calgary to Illinois in the afternoon. Doing so could potentially save you 52% on the flight price compared to flying at noon, which is usually more expensive.

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 12 December 2025.

The most flights from YYC to USIL are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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 12 December 2025.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines 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
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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
8,007 reviews
Delta
7.9
Good
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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
9,095 reviews
Delta
7.9
Good
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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
3,195 reviews
Delta
7.9
Good
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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
10,516 reviews
Delta
7.9
Good
8,007 reviews
Check prices

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

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 3h 20m. Fly via Air Canada, United Airlines, or Delta 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 Air Canada and United Airlines, with prices starting from C$ 155 and C$ 163, 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: Air Canada (82%), Emirates (82%), United Airlines( 82%).

  • 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$ 841, our data indicates the cheapest price to be C$ 150. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 240.

  • 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, April is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 149). Flying from Calgary to Illinois in July is currently the most expensive (average of C$ 214). 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

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Alternative routes for Calgary to Illinois

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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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 149AverageC$ 310FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 176AverageC$ 255FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 184AverageC$ 344FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 185AverageC$ 423FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 214AverageC$ 500FlexibilityNo cancel feeOn-time69%
Search United 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.

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