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Illinois

$112+ Cheap flights from Calgary (YYC) to Illinois

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Calgary to Illinois

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

Round-trip from

$150
(Kiwi.com)

One-way from

$112
(Air Canada)

Popular in

December

Cheapest in

April

Average price

$244

Good round-trip deal

$183 or less

Good one-way deal

$177 or less
From Calgary to Illinois
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One-way flight from Calgary to Illinois
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Highest demand for flights based on searches. 22% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Calgary to Illinois.
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Price to beat on a one-way flight from Calgary to Illinois.
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Find flight deals from Calgary to Illinois

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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3112:15 pmYYC - ORD
Nonstop3h 29mWestJet
Mon 8/45:30 pmORD - YYC
Nonstop3h 49mWestJet
Deal found 6/11$150
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:29 amYYC - ORD
Nonstop3h 25mAmerican Airlines
Tue 6/171:28 pmORD - YYC
1 stop9h 29mAmerican Airlines
Deal found 6/12$174
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1712:38 pmYYC - ORD
Nonstop3h 32mUnited Airlines
Tue 6/245:02 amORD - YYC
1 stop14h 19mUnited Airlines
Deal found 6/11$191
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/61:10 amYYC - ORD
1 stop7h 41mAir Canada
Wed 9/176:20 pmORD - YYC
1 stop7h 52mAir Canada
Deal found 6/11$201
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/148:00 amYYC - ORD
2 stops12h 30mMultiple Airlines
Wed 7/235:30 pmORD - YYC
Nonstop3h 49mMultiple Airlines
Deal found 6/12$210
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:35 amYYC - ORD
2 stops14h 11mDelta
Fri 9/191:55 pmORD - YYC
1 stop10h 17mDelta
Deal found 6/11$225
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:45 amYYC - MDW
1 stop9h 55mDelta
Tue 6/241:47 pmMDW - YYC
1 stop8h 10mDelta
Deal found 6/11$240
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/99:15 amYYC - STL
1 stop23h 37mMultiple Airlines
Sun 7/1310:47 amSTL - YYC
2 stops34h 13mMultiple Airlines
Deal found 6/10$308
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:30 amYYC - MDW
1 stop21h 05mMultiple Airlines
Sat 8/26:20 amMDW - YYC
2 stops19h 24mMultiple Airlines
Deal found 6/11$348
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1512:30 amYYC - STL
1 stop14h 48mWestJet
Sat 7/191:23 pmSTL - YYC
1 stop22h 56mWestJet
Deal found 6/10$433
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/217:00 amYYC - MDW
2 stops32h 24mPorter Airlines
Tue 8/55:20 pmMDW - YYC
2 stops29h 00mPorter Airlines
Deal found 6/11$460
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/97:00 amYYC - STL
2 stops8h 42mDelta
Sun 7/132:23 pmSTL - YYC
1 stop9h 34mDelta
Deal found 6/11$465

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 2,558,603 searches. Data last updated June 12, 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 7/31

12:15 pm-4:44 pm

Nonstop3h 29m

Chicago O'Hare Intl

Mon 8/4

5:30 pm-8:19 pm

Nonstop3h 49m

$150

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 9/13

6:45 am-9:24 pm

1 stop13h 39m

Chicago O'Hare Intl

Sat 9/20

8:30 pm-11:19 pm

Nonstop3h 49m

$200

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 9/6

1:10 am-9:51 am

1 stop7h 41m

Chicago O'Hare Intl

Wed 9/17

6:20 pm-1:12 am

1 stop7h 52m

$201

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mon 7/14

8:00 am-9:30 pm

2 stops12h 30m

Chicago O'Hare Intl

Wed 7/23

5:30 pm-8:19 pm

Nonstop3h 49m

$210

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 9/13

6:35 am-9:46 pm

2 stops14h 11m

Chicago O'Hare Intl

Fri 9/19

1:55 pm-11:12 pm

1 stop10h 17m

$225

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Tue 9/9

6:40 am-5:37 pm

1 stop9h 57m

Chicago Midway

Wed 9/17

1:00 pm-8:54 pm

2 stops8h 54m

$240

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 7/9

9:15 am-9:52 am

1 stop23h 37m

Lambert-St Louis

Sun 7/13

10:47 am-8:00 pm

2 stops34h 13m

$308

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Fri 7/25

12:30 am-10:35 pm

1 stop21h 05m

Chicago Midway

Sat 8/2

6:20 am-12:44 am

2 stops19h 24m

$348

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 7/15

12:30 am-4:18 pm

1 stop14h 48m

Lambert-St Louis

Sat 7/19

1:23 pm-11:19 am

1 stop22h 56m

$433

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Mon 7/21

7:00 am-4:24 pm

2 stops32h 24m

Chicago Midway

Tue 8/5

5:20 pm-9:20 pm

2 stops29h 00m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 29 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, August is the cheapest month in which you can book a flight from Calgary to Illinois (average of $245). Flying from Calgary to Illinois in March is currently the most expensive (average of $321). 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Calgary to Illinois as you normally would.

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 June 12, 2025.

The most flights from YYC to USIL are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Calgary to Illinois, such as Alaska Airlines, Porter Airlines and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Porter Airlines
8.0
Very good
288 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    Calgary (YYC) is the airport you will fly out of if you book a flight from Calgary to Illinois. It is only a 5.8 mi journey to Calgary (YYC) from Calgary’s city center.

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

    The cheapest airlines for a one-way flight from Calgary to Illinois are Air Canada ($112), United Airlines ($117), and American Airlines ($128).

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

    Most travelers choose Calgary - Chicago O'Hare Intl, Calgary - Chicago Midway or Calgary - Lambert-St Louis when deciding on the best route from Calgary to Illinois.

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

    Consider Avianca (91%), Air Canada (84%) or United Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from Calgary to Illinois.

  • What are the cheapest flights from Calgary to Illinois?

    Looking for the cheapest flight from Calgary to Illinois? While on average our users pay $527, our data indicates the cheapest price to be $109. The most popular route (Calgary - Chicago O'Hare Intl), is priced around $191.

  • 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, August is the cheapest month in which you can book a flight from Calgary to Illinois (average of $245). Flying from Calgary to Illinois in March is currently the most expensive (average of $321). 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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Top 4 airlines flying from Calgary to Illinois

Discover the top 4 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$109Average$388FlexibilityNo cancel feeOn-time67%
WestJetCheapest$139Average$195FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$205Average$356FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$239Average$473FlexibilityNo cancel feeOn-time69%

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