Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Calgary to Illinois from C$ 129

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 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
20 Apr — 27 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 15 April 2025.

Round-trip from

C$ 179

One-way from

C$ 129

Popular in

December

Cheapest in

May

Average price

C$ 280

Good round-trip deal

C$ 464 or less

Good one-way deal

C$ 264 or less
WestJet
  • WestJet
  • 3/5-11/5
  • Nonstop
  • 7h 18m total
  • Calgary to Illinois
Search Deals
WestJet
  • WestJet
  • 26/5
  • Nonstop
  • 3h 29m total
  • Calgary to Illinois
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Calgary to Illinois.
Search Deals
Price to beat on a one-way flight from Calgary to Illinois.
Search Deals

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 15 April 2025.

Fri 22/812:15 p.m.YYC - ORD
Nonstop3h 29mWestJet
Sun 7/95:30 p.m.ORD - YYC
Nonstop3h 49mWestJet
Deal found 15/4C$ 217
Thu 29/512:55 a.m.YYC - ORD
1 stop9h 29mAir Canada
Sun 1/65:02 a.m.ORD - YYC
1 stop14h 19mAir Canada
Deal found 15/4C$ 225
Fri 30/51:30 p.m.YYC - ORD
1 stop9h 55mUnited Airlines
Sun 1/65:02 a.m.ORD - YYC
1 stop14h 19mUnited Airlines
Deal found 15/4C$ 239
Wed 4/612:15 p.m.YYC - ORD
Nonstop3h 29mMultiple Airlines
Sun 8/66:10 a.m.ORD - YYC
1 stop16h 59mMultiple Airlines
Deal found 15/4C$ 303
Fri 30/52:00 p.m.YYC - ORD
1 stop6h 40mDelta
Fri 6/61:40 p.m.ORD - YYC
1 stop10h 21mDelta
Deal found 15/4C$ 310
Thu 28/86:29 a.m.YYC - ORD
Nonstop3h 25mAmerican Airlines
Fri 5/98:25 p.m.ORD - YYC
Nonstop4h 04mAmerican Airlines
Deal found 15/4C$ 334
Fri 30/56:30 a.m.YYC - ORD
2 stops12h 51mKLM
Fri 6/61:40 p.m.ORD - YYC
1 stop10h 21mKLM
Deal found 15/4C$ 389
Fri 30/56:45 a.m.YYC - ORD
1 stop23h 40mBritish Airways
Fri 6/68:30 p.m.ORD - YYC
Nonstop3h 59mBritish Airways
Deal found 15/4C$ 402
Tue 9/97:00 a.m.YYC - STL
1 stop7h 16mAir Canada
Tue 21/109:00 a.m.STL - YYC
1 stop5h 53mAir Canada
Deal found 14/4C$ 414
Thu 22/58:30 a.m.YYC - STL
1 stop13h 18mUnited Airlines
Wed 28/55:27 p.m.STL - YYC
1 stop6h 26mUnited Airlines
Deal found 14/4C$ 420
Fri 30/510:00 a.m.YYC - MDW
1 stop11h 14mMultiple Airlines
Fri 6/66:30 a.m.MDW - YYC
1 stop14h 35mMultiple Airlines
Deal found 15/4C$ 420
Tue 2/96:29 a.m.YYC - STL
1 stop5h 19mAmerican Airlines
Wed 8/101:54 p.m.STL - YYC
1 stop9h 01mAmerican Airlines
Deal found 14/4C$ 442

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 15 April 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

Fri 22/8

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

Nonstop3h 29m

Chicago O'Hare Intl

Sun 7/9

5:30 p.m.-8:19 p.m.

Nonstop3h 49m

C$ 217

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 29/5

12:55 a.m.-11:24 a.m.

1 stop9h 29m

Chicago O'Hare Intl

Sun 1/6

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

1 stop14h 19m

C$ 225

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 30/5

1:30 p.m.-12:25 a.m.

1 stop9h 55m

Chicago O'Hare Intl

Sun 1/6

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

1 stop14h 19m

C$ 239

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 4/6

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

Nonstop3h 29m

Chicago O'Hare Intl

Sun 8/6

6:10 a.m.-10:09 p.m.

1 stop16h 59m

C$ 303

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 30/5

2:00 p.m.-9:40 p.m.

1 stop6h 40m

Chicago O'Hare Intl

Fri 6/6

1:40 p.m.-11:01 p.m.

1 stop10h 21m

C$ 310

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 28/8

6:29 a.m.-10:54 a.m.

Nonstop3h 25m

Chicago O'Hare Intl

Fri 5/9

8:25 p.m.-11:29 p.m.

Nonstop4h 04m

C$ 334

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 30/5

6:30 a.m.-8:21 p.m.

2 stops12h 51m

Chicago O'Hare Intl

Fri 6/6

1:40 p.m.-11:01 p.m.

1 stop10h 21m

C$ 389

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 30/5

6:45 a.m.-7:25 a.m.

1 stop23h 40m

Chicago O'Hare Intl

Fri 6/6

8:30 p.m.-11:29 p.m.

Nonstop3h 59m

C$ 402

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 9/9

7:00 a.m.-3:16 p.m.

1 stop7h 16m

Lambert-St Louis

Tue 21/10

9:00 a.m.-1:53 p.m.

1 stop5h 53m

C$ 414

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 22/5

8:30 a.m.-10:48 p.m.

1 stop13h 18m

Lambert-St Louis

Wed 28/5

5:27 p.m.-10:53 p.m.

1 stop6h 26m

C$ 420

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/4

Showing 1-10 of 37 results
1
2
3
4

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 15 April 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.

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 15 April 2025.

The most flights from YYC to USIL are scheduled on a Monday (6 on average). You will have fewer flight options on Wednesday, 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 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 15 April 2025.
Read reviews from past customers who have flown Alaska Airlines, Porter Airlines and Delta 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
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Porter Airlines
8.0
Very good
281 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
KLM
7.8
Good
1,323 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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$ 129 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from C$ 135 and C$ 157, 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 (87%), Emirates (87%), United Airlines( 87%).

  • 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$ 549, our data indicates the cheapest price to be C$ 197. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 228.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Calgary to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Calgary to Las Vegas flights
Edmonton to Las Vegas flights
Calgary to Los Angeles flights
Calgary to Newark flights
Calgary to Sky Harbor Intl flights
Calgary to John F Kennedy Intl flights
Calgary to Seattle flights
Edmonton to Los Angeles flights
Edmonton to San Francisco flights
Calgary to San Francisco flights
Calgary to O'Hare Intl flights
Edmonton to Seattle flights
Calgary to Nashville flights
Calgary to Orlando flights
Calgary to San Diego flights
Edmonton to Sky Harbor Intl flights
Calgary to LaGuardia flights
Calgary to Dallas/Fort Worth flights
Edmonton to Denver flights
Edmonton to Dallas/Fort Worth flights
Calgary to Dulles Intl flights
Calgary to Atlanta flights
Calgary to Hobby flights
Calgary to Ontario flights
Calgary to Denver flights
Calgary to Fort Lauderdale flights
Calgary to Honolulu flights
Calgary to Baltimore flights
Calgary to Boston flights
Calgary to Miami flights
Calgary to George Bush Intcntl flights
Calgary to Detroit flights
Edmonton to Hobby flights
Edmonton to John F Kennedy Intl flights
Calgary to Austin flights
Calgary to Palm Springs flights
Calgary to Reagan-National flights
Edmonton to Nashville flights
Edmonton to Newark flights
Edmonton to Atlanta flights
Edmonton to George Bush Intcntl flights
Calgary to Midway flights
Edmonton to Portland flights
Edmonton to Salt Lake City flights
Edmonton to Orlando flights
Edmonton to O'Hare Intl flights
Calgary to Salt Lake City flights
Calgary to Minneapolis flights
Calgary to Lihue flights
Calgary to Santa Ana flights

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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 158AverageC$ 398FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 179AverageC$ 310FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 197AverageC$ 423FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 201AverageC$ 384FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 317AverageC$ 605FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJet EncoreCheapestC$ 560AverageC$ 989FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.