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$98+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$166
(Kiwi.com)

One-way from

$103
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$200

Good round-trip deal

$149 or less

Good one-way deal

$189 or less
Provider with most accurate pricing for Calgary-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Calgary-Chicago (CHI) flights.
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From Calgary to Illinois
Search Deals
One-way flight from Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. 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.
Thu 2/2711:30 amYYC - ORD
Nonstop3h 26mWestJet
Sun 3/24:45 pmORD - YYC
Nonstop3h 51mWestJet
Deal found 2/19$159
This Air Canada deal was found by Cheapflights users on 2/19. 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.
Mon 4/78:30 amYYC - ORD
1 stop9h 24mAir Canada
Thu 4/1010:53 amORD - YYC
1 stop10h 30mAir Canada
Deal found 2/19$175
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/202:01 pmYYC - ORD
1 stop7h 44mUnited Airlines
Thu 3/275:00 amORD - YYC
1 stop10h 21mUnited Airlines
Deal found 2/20$189
This flygcity.se deal was found by Cheapflights users on 2/19. 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 flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/211:30 amYYC - ORD
Nonstop3h 26mMultiple Airlines
Sun 3/95:00 amORD - YYC
1 stop10h 21mMultiple Airlines
Deal found 2/19$210
This Delta deal was found by Cheapflights users on 2/20. 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 5/137:15 amYYC - ORD
1 stop9h 46mDelta
Sat 5/179:30 amORD - YYC
2 stops14h 37mDelta
Deal found 2/20$220
This Delta deal was found by Cheapflights users on 2/20. 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.
Mon 3/36:35 amYYC - MDW
1 stop10h 08mDelta
Wed 3/51:26 pmMDW - YYC
1 stop8h 27mDelta
Deal found 2/20$220
This Kiwi.com deal was found by Cheapflights users on 2/19. 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.
Sat 3/153:45 pmYYC - MDW
1 stop12h 45mMultiple Airlines
Wed 3/199:25 amMDW - YYC
1 stop8h 37mMultiple Airlines
Deal found 2/19$291
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
Tue 2/256:55 pmYYC - STL
1 stop21h 48mMultiple Airlines
Mon 3/311:08 pmSTL - YYC
1 stop14h 30mMultiple Airlines
Deal found 2/18$302
This Air Canada deal was found by Cheapflights users on 2/19. 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 3/16:14 amYYC - STL
1 stop9h 19mAir Canada
Wed 3/51:39 pmSTL - YYC
1 stop9h 02mAir Canada
Deal found 2/19$320
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 2/201:32 pmYYC - ORD
Nonstop3h 31mAmerican Airlines
Sun 2/236:48 pmORD - YYC
1 stop18h 02mAmerican Airlines
Deal found 2/19$320
This Delta deal was found by Cheapflights users on 2/18. 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 3/16:35 amYYC - STL
1 stop7h 15mDelta
Wed 3/55:00 pmSTL - YYC
1 stop7h 15mDelta
Deal found 2/18$322
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/1312:45 pmYYC - STL
1 stop19h 03mAmerican Airlines
Wed 3/195:10 amSTL - YYC
1 stop7h 39mAmerican Airlines
Deal found 2/19$331

Find flights from Calgary to Illinois within your budget

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 February 20, 2025.

Fly from

Calgary

Fly to

Illinois

Route

Depart

Return

Price

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mon 4/14

11:30 am-3:56 pm

Nonstop3h 26m

Chicago O'Hare Intl

Sun 4/20

4:45 pm-7:36 pm

Nonstop3h 51m

$159

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Mon 4/7

8:30 am-6:54 pm

1 stop9h 24m

Chicago O'Hare Intl

Thu 4/10

10:53 am-8:23 pm

1 stop10h 30m

$175

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 3/20

2:01 pm-10:45 pm

1 stop7h 44m

Chicago O'Hare Intl

Thu 3/27

5:00 am-2:21 pm

1 stop10h 21m

$189

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 3/2

11:30 am-3:56 pm

Nonstop3h 26m

Chicago O'Hare Intl

Sun 3/9

5:00 am-2:21 pm

1 stop10h 21m

$210

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 5/13

7:15 am-6:01 pm

1 stop9h 46m

Chicago O'Hare Intl

Sat 5/17

9:30 am-11:07 pm

2 stops14h 37m

$220

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Mon 3/3

6:35 am-5:43 pm

1 stop10h 08m

Chicago Midway

Wed 3/5

1:26 pm-8:53 pm

1 stop8h 27m

$220

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sat 3/15

3:45 pm-5:30 am

1 stop12h 45m

Chicago Midway

Wed 3/19

9:25 am-5:02 pm

1 stop8h 37m

$291

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 3/2

6:35 am-4:53 pm

1 stop9h 18m

Lambert-St Louis

Sat 3/8

5:00 pm-11:15 pm

1 stop7h 15m

$322

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 3/13

12:45 pm-8:48 am

1 stop19h 03m

Lambert-St Louis

Wed 3/19

5:10 am-11:49 am

1 stop7h 39m

$331

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 3/13

9:55 am-2:49 pm

1 stop27h 54m

Lambert-St Louis

Wed 3/19

5:35 pm-7:05 pm

2 stops26h 30m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 28 results
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2
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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.

Travel insights for flights from Calgary to Illinois

Get recent, data-driven insights about flights from Calgary to Illinois including ideal travel times, pricing trends, and more.

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 February 20, 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 February 20, 2025.

The most flights from YYC to USIL are scheduled on a Thursday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 February 20, 2025.
Read through reviews of airlines operating flights from Calgary to Illinois, such as Alaska Airlines, Delta and Porter Airlines. 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
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Porter Airlines
7.9
Good
276 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 ($103), Air Canada ($110), and United Airlines ($121).

  • 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 Air Canada (90%), Emirates (90%) or United Airlines (90%) 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 $381, our data indicates the cheapest price to be $94. The most popular route (Calgary - Chicago O'Hare Intl), is priced around $183.

  • 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 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 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$143Average$248FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$154Average$451FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$219Average$443FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$239Average$530FlexibilityNo cancel feeOn-time69%
DeltaCheapest$268Average$327FlexibilityNo cancel feeOn-timeN/A
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