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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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Aug 5 — Aug 121
Di 8/5
Di 8/12
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 Juli 31, 2025.

Round-trip from

$153
(Kiwi.com)

One-way from

$112
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$363

Good round-trip deal

$203 or less

Good one-way deal

$205 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. 23% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 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 Juli 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Do 9/412:15 pmYYC - ORD
Nonstop3h 28mWestJet
Di 9/95:30 pmORD - YYC
Nonstop3h 49mWestJet
Deal found 7/30$153
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 9/2412:15 pmYYC - ORD
Nonstop3h 28mMultiple Airlines
Do 10/238:47 amORD - YYC
Nonstop3h 51mMultiple Airlines
Deal found 7/30$158
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Di 9/21:10 amYYC - ORD
1 stop7h 41mAir Canada
Di 9/96:20 pmORD - YYC
1 stop7h 52mAir Canada
Deal found 7/29$165
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 9/246:15 amYYC - ORD
1 stop11h 11mUnited Airlines
Do 10/239:44 pmORD - YYC
1 stop17h 09mUnited Airlines
Deal found 7/30$174
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Fr 8/296:29 amYYC - ORD
Nonstop3h 25mAmerican Airlines
Do 9/46:30 pmORD - YYC
1 stop18h 20mAmerican Airlines
Deal found 7/30$210
This Delta deal was found by Cheapflights users on 7/29. 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.
Mi 9/37:55 amYYC - ORD
1 stop8h 35mDelta
Di 9/91:00 pmORD - YYC
1 stop10h 57mDelta
Deal found 7/29$225
This Delta deal was found by Cheapflights users on 7/30. 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.
Mi 9/106:40 amYYC - MDW
1 stop5h 23mDelta
Sa 9/139:20 amMDW - YYC
2 stops14h 42mDelta
Deal found 7/30$244
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Do 8/288:55 amYYC - STL
1 stop23h 16mMultiple Airlines
Di 9/27:54 pmSTL - YYC
1 stop19h 51mMultiple Airlines
Deal found 7/30$305
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Fr 9/56:29 amYYC - STL
1 stop28h 01mAmerican Airlines
Sa 9/136:10 amSTL - YYC
1 stop18h 09mAmerican Airlines
Deal found 7/30$320
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sa 9/610:00 amYYC - MDW
1 stop12h 17mMultiple Airlines
Mo 9/86:20 amMDW - YYC
1 stop14h 40mMultiple Airlines
Deal found 7/29$339
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Do 9/2512:20 amYYC - STL
1 stop13h 58mAir Canada
So 9/281:30 pmSTL - YYC
1 stop10h 46mAir Canada
Deal found 7/29$407
This Mytrip deal was found by Cheapflights users on 7/31. 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.
So 9/148:00 amYYC - MDW
2 stops23h 39mPorter Airlines
So 9/219:35 amMDW - YYC
2 stops13h 53mPorter Airlines
Deal found 7/31$428

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 Juli 31, 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

Do 9/4

12:15 pm-4:43 pm

Nonstop3h 28m

Chicago O'Hare Intl

Di 9/9

5:30 pm-8:19 pm

Nonstop3h 49m

$153

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mi 9/24

12:15 pm-4:43 pm

Nonstop3h 28m

Chicago O'Hare Intl

Do 10/23

8:47 am-11:38 am

Nonstop3h 51m

$158

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Di 9/2

1:10 am-9:51 am

1 stop7h 41m

Chicago O'Hare Intl

Di 9/9

6:20 pm-1:12 am

1 stop7h 52m

$165

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mi 9/24

6:15 am-6:26 pm

1 stop11h 11m

Chicago O'Hare Intl

Do 10/23

9:44 pm-1:53 pm

1 stop17h 09m

$174

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fr 8/29

6:29 am-10:54 am

Nonstop3h 25m

Chicago O'Hare Intl

Do 9/4

6:30 pm-11:50 am

1 stop18h 20m

$210

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mi 9/3

7:55 am-5:30 pm

1 stop8h 35m

Chicago O'Hare Intl

Di 9/9

1:00 pm-10:57 pm

1 stop10h 57m

$225

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Mi 9/10

6:40 am-1:03 pm

1 stop5h 23m

Chicago Midway

Sa 9/13

9:20 am-11:02 pm

2 stops14h 42m

$244

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Do 8/28

8:55 am-9:11 am

1 stop23h 16m

Lambert-St Louis

Di 9/2

7:54 pm-2:45 pm

1 stop19h 51m

$305

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fr 9/5

6:29 am-11:30 am

1 stop28h 01m

Lambert-St Louis

Sa 9/13

6:10 am-11:19 pm

1 stop18h 09m

$320

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sa 9/6

10:00 am-11:17 pm

1 stop12h 17m

Chicago Midway

Mo 9/8

6:20 am-8:00 pm

1 stop14h 40m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 32 results
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2
3
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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 Juli 31, 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 Juli 31, 2025.

The most flights from YYC to USIL are scheduled on a Thursday (15 on average). You will have fewer flight options on Sunday, 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 Juli 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Porter Airlines, and Delta from Calgary to Illinois to help guide your decision. 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

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Porter Airlines
8.0
Very good
318 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
United Airlines
7.4
Good
8,902 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave

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 WestJet ($112), Air Canada ($113), and United Airlines ($114).

  • 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 (87%), Envoy Air (85%) or Air Canada (81%) 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 $350, our data indicates the cheapest price to be $127. The most popular route (Calgary - Chicago O'Hare Intl), is priced around $158.

  • 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 Juli 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$109Average$484FlexibilityNo cancel feeOn-time67%
WestJetCheapest$137Average$220FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$219Average$389FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$239Average$468FlexibilityNo cancel feeOn-time69%

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