What is the cheapest airline that flies from Calgary to Illinois?

WestJet, American Airlines, and Air Canada are the most popular carriers operating from Calgary to Illinois

How many flights depart from Calgary to Illinois on average per day?

As of August 2025, 10 flights take off from Calgary and land in Illinois each day. The most common flight departure time for this route is 12:00PM, with 63% of daily flights taking off in the afternoon.

What airlines fly to Illinois?

WestJet, United Airlines and Air Canada are the top three most popular airlines that fly to Illinois from Calgary according to our data. WestJet is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Calgary to Illinois on average per week?

As of August 2025, 76 flights take off from Calgary and land in Illinois each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

When did momondo last update prices for flights from Calgary Airport to Illinois?

Prices for flights from Calgary Airport to Illinois were last updated today.

How many operators does momondo search for flights from Calgary Airport to Illinois?

As of August 2025, there are 4 operators available to choose from for flights from Calgary Airport to Illinois.

How old do you have to be to fly from Calgary Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Calgary Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$92 Cheap Flights from Calgary to Illinois in 2025

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Find the cheapest flights from Calgary to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:15 pm - 4:43 pmYYC-ORD

3h 28mnonstop

5:30 pm - 8:19 pmORD-YYC

3h 49mnonstop

$153WestJet

Find Deal

Wed, Sep 24 - Fri, Sep 26

12:15 pm - 4:43 pmYYC-ORD

3h 28mnonstop

5:30 pm - 8:19 pmORD-YYC

3h 49mnonstop

$155WestJet

Find Deal

Sat, Oct 18 - Mon, Oct 20

1:10 am - 9:51 amYYC-ORD

7h 41m1 stop

6:20 pm - 1:12 amORD-YYC

7h 52m1 stop

$179Air Canada

Find Deal

Tue, Sep 23 - Fri, Sep 26

1:10 am - 9:51 amYYC-ORD

7h 41m1 stop

9:55 am - 1:12 amORD-YYC

16h 17m1 stop

$194Air Canada

Find Deal

Wed, Sep 3 - Wed, Sep 10

12:35 pm - 5:10 pmYYC-ORD

3h 35mnonstop

7:10 am - 9:53 pmORD-YYC

15h 43m1 stop

$197United Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

1:29 pm - 5:54 pmYYC-ORD

3h 25mnonstop

9:45 pm - 11:59 amORD-YYC

15h 14m1 stop

$201American Airlines

Find Deal

Thu, Oct 23 - Mon, Oct 27

6:15 am - 9:30 pmYYC-ORD

14h 15m1 stop

5:01 am - 1:53 pmORD-YYC

9h 52m1 stop

$202United Airlines

Find Deal

Fri, Oct 17 - Sun, Oct 19

6:45 am - 8:01 pmYYC-ORD

12h 16m1 stop

8:30 pm - 11:19 pmORD-YYC

3h 49mnonstop

$228American Airlines

Find Deal

Wed, Sep 24 - Fri, Sep 26

6:40 am - 4:45 pmYYC-ORD

9h 05m1 stop

1:00 pm - 10:57 pmORD-YYC

10h 57m1 stop

$254Delta

Find Deal

Fri, Aug 29 - Fri, Sep 5

6:40 am - 5:37 pmYYC-MDW

9h 57m1 stop

12:15 pm - 8:43 pmMDW-YYC

9h 28m1 stop

$262Delta

Find Deal

Fri, Aug 29 - Sun, Aug 31

Air Canada flights from Calgary to Illinois

Our best Air Canada deals on Calgary to Illinois flight tickets

Air Canada

Sep 23

YYC1:10 amCalgary

7h 41m

1 stop

ORD9:51 amChicago O'Hare Intl

Sep 26

ORD6:20 pmChicago O'Hare Intl

7h 52m

1 stop

YYC1:12 amCalgary

$179

Find similar

Air Canada

Sep 3

YYC1:10 amCalgary

7h 41m

1 stop

ORD9:51 amChicago O'Hare Intl

Sep 10

ORD9:55 amChicago O'Hare Intl

16h 17m

1 stop

YYC1:12 amCalgary

$194

Find similar

Air Canada

Oct 17

YYC1:10 amCalgary

7h 41m

1 stop

ORD9:51 amChicago O'Hare Intl

Oct 20

ORD3:50 pmChicago O'Hare Intl

8h 32m

1 stop

YYC11:22 pmCalgary

$203

Find similar

WestJet flights from Calgary to Illinois

Our best WestJet deals on Calgary to Illinois flight tickets

WestJet

Sep 24

YYC12:15 pmCalgary

3h 28m

ORD4:43 pmChicago O'Hare Intl

Sep 26

ORD5:30 pmChicago O'Hare Intl

3h 49m

YYC8:19 pmCalgary

$153

Find similar

WestJet

Oct 18

YYC12:15 pmCalgary

3h 28m

ORD4:43 pmChicago O'Hare Intl

Oct 20

ORD5:30 pmChicago O'Hare Intl

3h 49m

YYC8:19 pmCalgary

$155

Find similar

WestJet

Oct 17

YYC12:15 pmCalgary

3h 28m

ORD4:43 pmChicago O'Hare Intl

Oct 19

ORD5:30 pmChicago O'Hare Intl

3h 49m

YYC8:19 pmCalgary

$166

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 9/24

12:15 pm-4:43 pm

Nonstop3h 28m

Chicago O'Hare Intl

Fri 9/26

5:30 pm-8:19 pm

Nonstop3h 49m

$153

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Sat 10/18

12:15 pm-4:43 pm

Nonstop3h 28m

Chicago O'Hare Intl

Mon 10/20

5:30 pm-8:19 pm

Nonstop3h 49m

$155

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 9/23

1:10 am-9:51 am

1 stop7h 41m

Chicago O'Hare Intl

Fri 9/26

6:20 pm-1:12 am

1 stop7h 52m

$179

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 9/3

1:10 am-9:51 am

1 stop7h 41m

Chicago O'Hare Intl

Wed 9/10

9:55 am-1:12 am

1 stop16h 17m

$194

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 12/11

12:35 pm-5:10 pm

Nonstop3h 35m

Chicago O'Hare Intl

Mon 12/15

7:10 am-9:53 pm

1 stop15h 43m

$197

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 10/23

1:29 pm-5:54 pm

Nonstop3h 25m

Chicago O'Hare Intl

Mon 10/27

9:45 pm-11:59 am

1 stop15h 14m

$201

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 10/17

6:15 am-9:30 pm

1 stop14h 15m

Chicago O'Hare Intl

Sun 10/19

5:01 am-1:53 pm

1 stop9h 52m

$202

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 9/24

6:45 am-8:01 pm

1 stop12h 16m

Chicago O'Hare Intl

Fri 9/26

8:30 pm-11:19 pm

Nonstop3h 49m

$228

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 8/29

6:40 am-4:45 pm

1 stop9h 05m

Chicago O'Hare Intl

Fri 9/5

1:00 pm-10:57 pm

1 stop10h 57m

$254

CalgaryChicago

YYC - MDW

YYCMDW

Calgary

Fri 8/29

6:40 am-5:37 pm

1 stop9h 57m

Chicago Midway

Sun 8/31

12:15 pm-8:43 pm

1 stop9h 28m

$262

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Calgary to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Calgary is in April. Flight prices, which tend to average around $191, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $200.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Calgary to Illinois is on a Sunday when prices can be found for as low as $162. Flights from Calgary to Illinois on a Monday will generally be more expensive and average around $485. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Calgary to Illinois during this time can be as low as $215. Flights at noon are often more expensive with an average ticket price of $544.

What is the cheapest Calgary to Illinois flight route?

Fly from Calgary to Chicago O'Hare Intl for the best Calgary - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Calgary for as low as $203 on momondo.

What cabin class options are available on Calgary to Illinois flights?

There are 4 cabin classes available to choose from on Calgary to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Calgary to Illinois flights?

No. A direct flight is the cheapest option for a flight between Calgary to Illinois.

Cheap Calgary to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Calgary to Illinois

Best Price Found	$92
Fastest flight time	3h 20m
Direct flights	Every day
Airports in Illinois	3 airports

The best one-way flight to Illinois from Calgary in the past 72 hours is $92. The best round-trip flight deal from Calgary to Illinois found on momondo in the last 72 hours is $153.

The fastest flight from Calgary to Illinois takes 3h 20m

Direct flights go from Calgary to Illinois every day.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Calgary Airport to Illinois?
Prices for flights from Calgary Airport to Illinois were last updated today.
How many operators does momondo search for flights from Calgary Airport to Illinois?
As of August 2025, there are 4 operators available to choose from for flights from Calgary Airport to Illinois.
How old do you have to be to fly from Calgary Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Calgary Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Calgary to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Calgary to Illinois is Boeing 737-700, representing 36.03% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 17.80%, Airbus A319 at 11.83%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 10.53%.

Best airlines flying from Calgary to Illinois

Compare and see reviews for airlines that fly from Calgary to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $109	Free Cancellation	Rating 7.1 9,855 reviews	Search Air Canada flights
WestJet	PriceFrom $137	Free Cancellation	Rating 7.2 2,980 reviews	Search WestJet flights
American Airlines	PriceFrom $219	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 8,904 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Calgary to Illinois?

It is quick and easy to find Calgary to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Calgary to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Calgary with this policy.

How can momondo help me find flights from Calgary to Illinois?

Once all potential Calgary to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Calgary to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Calgary to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Illinois trip

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Find better results for your trip to Illinois

Popular cities in Illinois

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Flights to Seattlefrom $93

Cheap flights from Calgary to Illinois from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Calgary to Illinois departing on 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Calgary to Illinois

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Air Canada flights from Calgary to Illinois

Our best Air Canada deals on Calgary to Illinois flight tickets

WestJet flights from Calgary to Illinois

Our best WestJet deals on Calgary to Illinois flight tickets

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

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How to get the cheapest flight ticket from Calgary to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Calgary to Illinois during this time can be as low as $215. Flights at noon are often more expensive with an average ticket price of $544.

What is the cheapest Calgary to Illinois flight route?

Fly from Calgary to Chicago O'Hare Intl for the best Calgary - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Calgary to Illinois flights?

There are 4 cabin classes available to choose from on Calgary to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Calgary to Illinois flights?

No. A direct flight is the cheapest option for a flight between Calgary to Illinois.

What is the cheapest airline that flies from Calgary to Illinois?

WestJet, American Airlines, and Air Canada are the most popular carriers operating from Calgary to Illinois

What airlines fly to Illinois?

How many flights depart from Calgary to Illinois on average per day?

As of August 2025, 10 flights take off from Calgary and land in Illinois each day. The most common flight departure time for this route is 12:00PM, with 63% of daily flights taking off in the afternoon.

How many flights depart from Calgary to Illinois on average per week?

As of August 2025, 76 flights take off from Calgary and land in Illinois each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

Cheap Calgary to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Calgary to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Calgary Airport to Illinois?

How many operators does momondo search for flights from Calgary Airport to Illinois?

How old do you have to be to fly from Calgary Airport to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Calgary to Illinois?

Best airlines flying from Calgary to Illinois

Compare and see reviews for airlines that fly from Calgary to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Calgary to Illinois?

Can I find flights from Calgary to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Calgary to Illinois?

I’m not ready to book a flight from Calgary to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo