How long is the flight from Calgary to Illinois?

There are many flights that can get you from Calgary to Illinois in 3h 33m. Fly via Alaska Airlines or United Airlines to get the fastest option. There are 2223 km between Calgary and Illinois. This flight may include one or multiple stops.

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 American Airlines, with prices starting from C$ 152 and C$ 164, respectively.

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.

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).

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 cheapest flights from Calgary to Illinois?

Looking for the cheapest flight from Calgary to Illinois? While on average our users pay C$ 1,848, our data indicates the cheapest price to be C$ 261. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 451.

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: Qatar Airways (82%), Scandinavian Airlines (77%), Air Canada( 75%).

What are the most popular airlines that fly from Calgary to Illinois?

Before booking your flight from Calgary to Illinois check out the most popular airlines for this route: WestJet, United Airlines or Air Canada.

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.

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.

C$ 227+ Cheap Flights from Calgary to Illinois

Cheap flight deals from Calgary to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 October 2026.

Fri 4/121:45 a.m. -

1 stop9h 22m

Sat 12/123:45 p.m. -

1 stop9h 05m

Deal found 21/10C$ 403

Thu 3/127:00 a.m. -

1 stop8h 38m

Mon 7/123:45 p.m. -

1 stop9h 05m

Deal found 21/10C$ 409

Tue 17/111:45 a.m. -

1 stop9h 22m

Mon 23/113:50 p.m. -

1 stop9h 00m

Deal found 22/10C$ 423

Mon 23/111:45 a.m. -

1 stop9h 22m

Fri 27/113:40 p.m. -

1 stop9h 10m

Deal found 24/10C$ 426

Sat 21/111:45 a.m. -

1 stop9h 22m

Tue 1/1210:05 a.m. -

1 stop7h 53m

Deal found 23/10C$ 429

Wed 4/117:00 a.m. -

1 stop8h 38m

Sat 7/113:40 p.m. -

1 stop9h 10m

Deal found 21/10C$ 430

Sat 5/121:20 a.m. -

1 stop7h 48m

Sun 13/127:05 a.m. -

1 stop10h 05m

Deal found 22/10C$ 431

Mon 7/121:45 a.m. -

1 stop9h 22m

Tue 15/124:30 p.m. -

1 stop7h 36m

Deal found 24/10C$ 433

Wed 25/111:20 a.m. -

1 stop8h 03m

Mon 30/114:30 p.m. -

1 stop7h 36m

Deal found 23/10C$ 436

Fri 4/129:07 a.m. -

1 stop7h 24m

Sun 6/126:00 a.m. -

1 stop15h 37m

Deal found 22/10C$ 438

Fri 4/129:07 a.m. -

1 stop7h 24m

Tue 8/126:00 a.m. -

1 stop15h 37m

Deal found 23/10C$ 440

Find flight deals from Calgary to Illinois

Round-trip from	C$ 403
One-way from	C$ 227
Popular in	November
Cheapest in	April
Average price	C$ 475
Good round-trip deal	C$ 635 or less
Good one-way deal	C$ 389 or less

Air Canada
4/12-12/12
2 total stops
18h 27m total
Calgary to Illinois

Search Deals

28/1-31/12
1 total stop
9h 19m total
Calgary to Illinois

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (C$ 73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Mon 23/11

1:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 252

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Fri 4/12

9:07 a.m.-5:49 p.m.

1 stop8h 42m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 270

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Thu 10/12

7:25 a.m.-6:06 p.m.

1 stop10h 41m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 275

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Fri 4/12

1:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 275

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Wed 18/11

1:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 275

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Fri 4/12

1:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 277

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Sat 5/12

1:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 277

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Tue 10/11

1:35 p.m.-11:54 p.m.

2 stops10h 19m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 293

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Sat 21/11

8:45 a.m.-8:49 p.m.

2 stops12h 04m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 293

CalgaryChicago

YYC Calgary - ORD Chicago O'Hare Intl

YYCORD

Calgary

Tue 29/12

7:59 p.m.-9:34 a.m.

1 stop13h 35m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 293

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 20 resultsSorted by cheapest first

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.

YYC-ORD

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

YYC-USIL

YYC-ORD

What is the cheapest month to book a flight from Calgary to Illinois?

Currently, May is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 364). Flying from Calgary to Illinois in June is currently the most expensive (average of C$ 529). 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?

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

The most flights from YYC to USIL are scheduled on a Friday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Calgary to Illinois?

Airfare is below average for this route at the moment.

Calgary to Illinois flights typically cost between C$ 408 and C$ 697 in December.
The cheapest round-trip price found within the last 5 days was C$ 403 on Air Canada (4 Dec-12 Dec).

How far ahead should I book a flight from Calgary to Illinois?

The best time to book flights from Calgary to Illinois is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Delta,United Airlines, andWestJet from Calgary to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,677 reviews

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

United Airlines

7.3

Good

10,440 reviews

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

WestJet

7.2

Good

3,445 reviews

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Air Canada

7.1

Good

11,815 reviews

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

American Airlines

7.0

Good

12,190 reviews

Delta

7.8

Good

8,677 reviews

Check prices

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

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.
How long is the flight from Calgary to Illinois?
There are many flights that can get you from Calgary to Illinois in 3h 33m. Fly via Alaska Airlines or United Airlines to get the fastest option. There are 2223 km between Calgary and Illinois. This flight may include one or multiple stops.
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 American Airlines, with prices starting from C$ 152 and C$ 164, 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: Qatar Airways (82%), Scandinavian Airlines (77%), Air Canada( 75%).
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$ 1,848, our data indicates the cheapest price to be C$ 261. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 451.
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, May is the cheapest month in which you can book a flight from Calgary to Illinois (average of C$ 364). Flying from Calgary to Illinois in June is currently the most expensive (average of C$ 529). 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

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Top 6 airlines flying from Calgary to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Delta	CheapestC$ 143	AverageC$ 387	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	CheapestC$ 186	AverageC$ 491	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 189	AverageC$ 531	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
WestJet	CheapestC$ 229	AverageC$ 380	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
American Airlines	CheapestC$ 244	AverageC$ 491	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Porter Airlines	CheapestC$ 264	AverageC$ 499	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights

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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.

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Cheap flights from Calgary to Illinois from C$ 227

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Calgary to Illinois

Cheapest flights from Calgary to IllinoisExplore 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 October 2026.

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 October 2026.

Best flights from Calgary to IllinoisDiscover carefully curated flight deals from Calgary to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Discover carefully curated flight deals from Calgary to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Direct flights from Calgary to IllinoisExplore direct flight options from Calgary to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 October 2026.

Explore direct flight options from Calgary to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 October 2026.

Last-minute flights from Calgary to IllinoisDiscover last-minute flight deals from Calgary to Illinois. Data last updated 26 October 2026 and is based on user searches.

Discover last-minute flight deals from Calgary to Illinois. Data last updated 26 October 2026 and is based on user searches.

One-way flights from Calgary to IllinoisSearch for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Search for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Find flight deals from Calgary to Illinois

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One-way from

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Cheapest in

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Use the filters below to find and compare flights from Calgary to Illinois that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Calgary to Illinois?

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 October 2026.

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 26 October 2026.

The most flights from YYC to USIL are scheduled on a Friday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Calgary to Illinois?

Airfare is below average for this route at the moment.

Calgary to Illinois flights typically cost between C$ 408 and C$ 697 in December.The cheapest round-trip price found within the last 5 days was C$ 403 on Air Canada (4 Dec-12 Dec).

How far ahead should I book a flight from Calgary to Illinois?

The best time to book flights from Calgary to Illinois is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Delta,United Airlines, andWestJet from Calgary to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Calgary to Illinois?

How long is the flight from Calgary to Illinois?

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

What are the most popular routes from Calgary to Illinois?

What are the most reliable airlines from Calgary to Illinois?

What are the cheapest flights from Calgary to Illinois?

Can I find deals for flights from Calgary to Illinois that include hotel bookings?

How can I find direct flights from Calgary to Illinois?

Can I find deals for business class flights from Calgary to Illinois?

What is the cheapest month to book a flight from Calgary to Illinois?

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.

Complete your trip

Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Calgary to Illinois by cabin class

Find flights from Calgary to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Calgary and Illinois flights

Browse other Calgary and Illinois flight options. Last updated on 26 October 2026.

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Calgary to Illinois flights

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Top 6 airlines flying from Calgary to Illinois

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How does Cheapflights help users find flights from Calgary to Illinois?

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Can Cheapflights notify me if prices for flights from Calgary to Illinois become cheaper?

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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 October 2026.

Best flights from Calgary to Illinois
Discover carefully curated flight deals from Calgary to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Direct flights from Calgary to Illinois
Explore direct flight options from Calgary to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 October 2026.

Last-minute flights from Calgary to Illinois
Discover last-minute flight deals from Calgary to Illinois. Data last updated 26 October 2026 and is based on user searches.

One-way flights from Calgary to Illinois
Search for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Calgary to Illinois flights typically cost between C$ 408 and C$ 697 in December.
The cheapest round-trip price found within the last 5 days was C$ 403 on Air Canada (4 Dec-12 Dec).