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Illinois

$103+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Kiwi.com)

One-way from

$103
(Justfly.com)

Popular in

December

Cheapest in

February

Average price

$267

Good round-trip deal

$149 or less

Good one-way deal

$184 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
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One-way flight from Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Sun 5/1112:15 pmYYC - ORD
Nonstop3h 29mWestJet
Tue 5/135:30 pmORD - YYC
Nonstop3h 49mWestJet
Deal found 3/24$157
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Fri 5/2312:38 pmYYC - ORD
Nonstop3h 32mUnited Airlines
Mon 5/265:02 amORD - YYC
1 stop14h 19mUnited Airlines
Deal found 3/23$213
This Mytrip deal was found by Cheapflights users on 3/24. 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.
Fri 5/212:25 amYYC - ORD
1 stop9h 29mAir Canada
Fri 5/94:00 pmORD - YYC
1 stop8h 43mAir Canada
Deal found 3/24$214
This Delta deal was found by Cheapflights users on 3/24. 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 4/158:00 amYYC - ORD
2 stops12h 31mDelta
Tue 4/2212:15 pmORD - YYC
2 stops11h 50mDelta
Deal found 3/24$218
This Delta deal was found by Cheapflights users on 3/23. 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 5/76:30 amYYC - MDW
1 stop10h 15mDelta
Wed 5/141:55 pmMDW - YYC
1 stop7h 45mDelta
Deal found 3/23$218
This American Airlines deal was found by Cheapflights users on 3/24. 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 6/66:29 amYYC - ORD
Nonstop3h 25mAmerican Airlines
Tue 6/108:25 pmORD - YYC
Nonstop4h 00mAmerican Airlines
Deal found 3/24$220
This United deal was found by Cheapflights users on 3/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/238:30 amYYC - ORD
Nonstop3h 33mMultiple Airlines
Mon 5/267:58 pmORD - YYC
1 stop12h 27mMultiple Airlines
Deal found 3/23$222
This Air Canada deal was found by Cheapflights users on 3/23. 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.
Tue 5/201:30 pmYYC - STL
1 stop6h 31mAir Canada
Sun 5/251:30 pmSTL - YYC
1 stop10h 36mAir Canada
Deal found 3/23$309
This TravelUp deal was found by Cheapflights users on 3/25. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:29 amYYC - STL
1 stop13h 01mMultiple Airlines
Mon 6/91:23 pmSTL - YYC
1 stop11h 02mMultiple Airlines
Deal found 3/25$339
This Trip.com deal was found by Cheapflights users on 3/25. 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.
Fri 6/139:15 amYYC - STL
1 stop10h 22mWestJet
Mon 6/236:30 amSTL - YYC
1 stop11h 18mWestJet
Deal found 3/25$351
This Delta deal was found by Cheapflights users on 3/24. 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.
Thu 5/86:30 amYYC - STL
1 stop9h 30mDelta
Thu 5/1511:32 amSTL - YYC
2 stops12h 29mDelta
Deal found 3/24$358
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/2412:30 amYYC - MDW
1 stop8h 35mMultiple Airlines
Mon 4/288:01 pmMDW - YYC
1 stop19h 44mMultiple Airlines
Deal found 3/23$406

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 March 25, 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

Sun 5/11

12:15 pm-4:44 pm

Nonstop3h 29m

Chicago O'Hare Intl

Tue 5/13

5:30 pm-8:19 pm

Nonstop3h 49m

$157

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 5/23

12:38 pm-5:10 pm

Nonstop3h 32m

Chicago O'Hare Intl

Mon 5/26

5:02 am-6:21 pm

1 stop14h 19m

$213

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 5/2

12:25 am-10:54 am

1 stop9h 29m

Chicago O'Hare Intl

Fri 5/9

4:00 pm-11:43 pm

1 stop8h 43m

$214

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 4/15

8:00 am-9:31 pm

2 stops12h 31m

Chicago O'Hare Intl

Tue 4/22

12:15 pm-11:05 pm

2 stops11h 50m

$218

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Wed 5/7

7:40 am-5:45 pm

2 stops9h 05m

Chicago Midway

Wed 5/14

1:55 pm-8:40 pm

1 stop7h 45m

$218

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 6/6

6:29 am-10:54 am

Nonstop3h 25m

Chicago O'Hare Intl

Tue 6/10

8:25 pm-11:25 pm

Nonstop4h 00m

$220

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 5/23

8:30 am-1:03 pm

Nonstop3h 33m

Chicago O'Hare Intl

Mon 5/26

7:58 pm-7:25 am

1 stop12h 27m

$222

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 5/20

1:30 pm-9:01 pm

1 stop6h 31m

Lambert-St Louis

Sun 5/25

1:30 pm-11:06 pm

1 stop10h 36m

$309

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

6:29 am-8:30 pm

1 stop13h 01m

Lambert-St Louis

Mon 6/9

1:23 pm-11:25 pm

1 stop11h 02m

$339

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/13

9:15 am-8:37 pm

1 stop10h 22m

Lambert-St Louis

Mon 6/23

6:30 am-4:48 pm

1 stop11h 18m

$351

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 30 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 $323). 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 March 25, 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 March 25, 2025.

The most flights from YYC to USIL are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 March 25, 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
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
275 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
9,785 reviews

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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), American Airlines ($108), and Air Canada ($113).

  • 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 (89%), Emirates (89%) or United Airlines (89%) 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 $414, our data indicates the cheapest price to be $109. The most popular route (Calgary - Chicago O'Hare Intl), is priced around $209.

  • 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 $323). 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$129Average$468FlexibilityNo cancel feeOn-time67%
WestJetCheapest$139Average$227FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$219Average$443FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$239Average$479FlexibilityNo cancel feeOn-time69%
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