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Cheap flights from Calgary to Illinois from C$ 132

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
31 Mar — 7 Apr1
1 adult

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 26 March 2025.

Round-trip from

C$ 279

One-way from

C$ 132

Popular in

December

Cheapest in

February

Average price

C$ 382

Good round-trip deal

C$ 451 or less

Good one-way deal

C$ 272 or less
WestJet
  • WestJet
  • 20/4-21/4
  • Nonstop
  • 7h 17m total
  • Calgary to Illinois
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WestJet
  • WestJet
  • 2/6
  • Nonstop
  • 3h 29m total
  • Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 123 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 31 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 26 March 2025.

Sun 20/411:30 a.m.YYC - ORD
Nonstop3h 26mWestJet
Mon 21/44:45 p.m.ORD - YYC
Nonstop3h 51mWestJet
Deal found 25/3C$ 279
Sun 25/58:30 a.m.YYC - ORD
Nonstop3h 33mUnited Airlines
Tue 27/55:02 a.m.ORD - YYC
1 stop14h 19mUnited Airlines
Deal found 25/3C$ 286
Sun 11/512:15 p.m.YYC - ORD
Nonstop3h 29mMultiple Airlines
Tue 13/59:02 p.m.ORD - YYC
1 stop15h 48mMultiple Airlines
Deal found 25/3C$ 303
Wed 13/86:29 a.m.YYC - ORD
Nonstop3h 24mAmerican Airlines
Mon 18/88:20 p.m.ORD - YYC
Nonstop4h 00mAmerican Airlines
Deal found 25/3C$ 305
Sat 10/512:45 a.m.YYC - ORD
1 stop7h 05mAir Canada
Tue 13/54:00 p.m.ORD - YYC
1 stop8h 08mAir Canada
Deal found 25/3C$ 309
Fri 11/47:40 a.m.YYC - ORD
2 stops13h 05mDelta
Sun 13/41:45 p.m.ORD - YYC
1 stop10h 31mDelta
Deal found 25/3C$ 312
Sun 11/56:30 a.m.YYC - MDW
1 stop5h 45mDelta
Tue 13/51:55 p.m.MDW - YYC
1 stop7h 45mDelta
Deal found 25/3C$ 345
Sat 10/512:30 a.m.YYC - MDW
1 stop12h 04mMultiple Airlines
Tue 13/59:34 a.m.MDW - YYC
1 stop11h 31mMultiple Airlines
Deal found 25/3C$ 390
Fri 23/512:38 p.m.YYC - STL
1 stop9h 07mAir Canada
Sun 25/51:30 p.m.STL - YYC
1 stop10h 36mAir Canada
Deal found 25/3C$ 458
Fri 6/66:29 a.m.YYC - STL
1 stop13h 01mMultiple Airlines
Mon 9/61:23 p.m.STL - YYC
1 stop11h 02mMultiple Airlines
Deal found 25/3C$ 485
Fri 13/69:15 a.m.YYC - STL
1 stop10h 22mWestJet
Mon 23/66:30 a.m.STL - YYC
1 stop11h 18mWestJet
Deal found 25/3C$ 502
Thu 8/52:00 p.m.YYC - STL
1 stop9h 59mDelta
Thu 15/511:32 a.m.STL - YYC
1 stop10h 08mDelta
Deal found 25/3C$ 513

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 26 March 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 20/4

11:30 a.m.-3:56 p.m.

Nonstop3h 26m

Chicago O'Hare Intl

Mon 21/4

4:45 p.m.-7:36 p.m.

Nonstop3h 51m

C$ 279

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 25/5

8:30 a.m.-1:03 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Tue 27/5

5:02 a.m.-6:21 p.m.

1 stop14h 19m

C$ 286

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sun 11/5

12:15 p.m.-4:44 p.m.

Nonstop3h 29m

Chicago O'Hare Intl

Tue 13/5

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

1 stop15h 48m

C$ 303

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 13/8

6:29 a.m.-10:53 a.m.

Nonstop3h 24m

Chicago O'Hare Intl

Mon 18/8

8:20 p.m.-11:20 p.m.

Nonstop4h 00m

C$ 305

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 10/5

12:45 a.m.-8:50 a.m.

1 stop7h 05m

Chicago O'Hare Intl

Tue 13/5

4:00 p.m.-11:08 p.m.

1 stop8h 08m

C$ 309

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 11/4

7:40 a.m.-9:45 p.m.

2 stops13h 05m

Chicago O'Hare Intl

Sun 13/4

1:45 p.m.-11:16 p.m.

1 stop10h 31m

C$ 312

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sun 11/5

6:30 a.m.-1:15 p.m.

1 stop5h 45m

Chicago Midway

Tue 13/5

1:55 p.m.-8:40 p.m.

1 stop7h 45m

C$ 345

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Sat 10/5

12:30 a.m.-1:34 p.m.

1 stop12h 04m

Chicago Midway

Tue 13/5

9:34 a.m.-8:05 p.m.

1 stop11h 31m

C$ 390

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 23/5

12:38 p.m.-10:45 p.m.

1 stop9h 07m

Lambert-St Louis

Sun 25/5

1:30 p.m.-11:06 p.m.

1 stop10h 36m

C$ 458

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

6:29 a.m.-8:30 p.m.

1 stop13h 01m

Lambert-St Louis

Mon 9/6

1:23 p.m.-11:25 p.m.

1 stop11h 02m

C$ 485

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/3

Showing 1-10 of 27 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, January is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 261). Flying from Calgary to Illinois in March is currently the most expensive (average of C$ 355). 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 26 March 2025.

When flying from Calgary to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 26 March 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and Porter Airlines from Calgary to Illinois. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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
9,789 reviews
Alaska Airlines
8.0
Very good
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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
7,891 reviews
Alaska Airlines
8.0
Very good
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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
8,608 reviews
Alaska Airlines
8.0
Very good
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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
9,789 reviews
Check prices

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

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?

    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.

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

    C$ 132 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from C$ 154 and C$ 162, 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 (89%), Emirates (89%), United Airlines( 89%).

  • 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$ 2,215, our data indicates the cheapest price to be C$ 203. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 287.

  • 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, January is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 261). Flying from Calgary to Illinois in March is currently the most expensive (average of C$ 355). 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 6 airlines flying from Calgary to Illinois

Discover the top 6 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 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 163AverageC$ 462FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 185AverageC$ 343FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 203AverageC$ 435FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 206AverageC$ 405FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 326AverageC$ 626FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJet EncoreCheapestC$ 576AverageC$ 1,018FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore 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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