Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Calgary to Illinois from C$ 124

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 24/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Calgary to Illinois

Cheap round-trip flights

WestJet Logo
12:15 p.m. - 4:43 p.m.YYC-ORD
3h 28mdirect
WestJet Logo
5:30 p.m. - 8:19 p.m.ORD-YYC
3h 49mdirect
C$ 183WestJet
Find Deal
Wed, 3 Sep - Tue, 9 Sep
WestJet Logo
12:15 p.m. - 4:43 p.m.YYC-ORD
3h 28mdirect
WestJet Logo
5:30 p.m. - 8:19 p.m.ORD-YYC
3h 49mdirect
C$ 211WestJet
Find Deal
Thu, 4 Sep - Tue, 9 Sep
Air Canada Logo
1:10 a.m. - 9:51 a.m.YYC-ORD
7h 41m1 stop
Air Canada Logo
6:20 p.m. - 1:12 a.m.ORD-YYC
7h 52m1 stop
C$ 228Air Canada
Find Deal
Tue, 2 Sep - Tue, 9 Sep
United Airlines Logo
6:15 a.m. - 6:26 p.m.YYC-ORD
11h 11m1 stop
United Airlines Logo
9:44 p.m. - 1:53 p.m.ORD-YYC
17h 09m1 stop
C$ 240United Airlines
Find Deal
Wed, 24 Sep - Thu, 23 Oct
Air Canada Logo
1:10 a.m. - 9:51 a.m.YYC-ORD
7h 41m1 stop
Air Canada Logo
8:40 a.m. - 3:50 p.m.ORD-YYC
8h 10m1 stop
C$ 246Air Canada
Find Deal
Tue, 23 Sep - Thu, 23 Oct
United Airlines Logo
12:37 p.m. - 5:10 p.m.YYC-ORD
3h 33mdirect
United Airlines Logo
8:45 a.m. - 11:35 a.m.ORD-YYC
3h 50mdirect
C$ 258United Airlines
Find Deal
Thu, 20 Nov - Tue, 25 Nov
American Airlines Logo
6:29 a.m. - 10:54 a.m.YYC-ORD
3h 25mdirect
American Airlines Logo
6:30 p.m. - 11:50 a.m.ORD-YYC
18h 20m1 stop
C$ 290American Airlines
Find Deal
Fri, 29 Aug - Thu, 4 Sep
Delta Logo
7:55 a.m. - 5:30 p.m.YYC-ORD
8h 35m1 stop
Delta Logo
1:00 p.m. - 10:57 p.m.ORD-YYC
10h 57m1 stop
C$ 310Delta
Find Deal
Wed, 3 Sep - Tue, 9 Sep
Delta Logo
6:40 a.m. - 4:45 p.m.YYC-ORD
9h 05m1 stop
Delta Logo
1:00 p.m. - 10:57 p.m.ORD-YYC
10h 57m1 stop
C$ 320Delta
Find Deal
Fri, 29 Aug - Wed, 3 Sep
American Airlines Logo
6:29 a.m. - 10:54 a.m.YYC-ORD
3h 25mdirect
American Airlines Logo
8:30 p.m. - 11:19 p.m.ORD-YYC
3h 49mdirect
C$ 323American Airlines
Find Deal
Fri, 19 Sep - Sun, 21 Sep

WestJet flights from Calgary to Illinois

Our best WestJet deals on Calgary to Illinois flight tickets
WestJet
3 Sep
YYC12:15 p.m.Calgary
3h 28m
ORD4:43 p.m.Chicago O'Hare Intl
9 Sep
ORD5:30 p.m.Chicago O'Hare Intl
3h 49m
YYC8:19 p.m.Calgary
C$ 183
Find similar
WestJet
4 Sep
YYC12:15 p.m.Calgary
3h 28m
ORD4:43 p.m.Chicago O'Hare Intl
9 Sep
ORD5:30 p.m.Chicago O'Hare Intl
3h 49m
YYC8:19 p.m.Calgary
C$ 211
Find similar
WestJet
13 Sep
YYC12:15 p.m.Calgary
3h 28m
ORD4:43 p.m.Chicago O'Hare Intl
20 Sep
ORD5:30 p.m.Chicago O'Hare Intl
3h 49m
YYC8:19 p.m.Calgary
C$ 222
Find similar

United Airlines flights from Calgary to Illinois

Our best United Airlines deals on Calgary to Illinois flight tickets
United Airlines
24 Sep
YYC6:15 a.m.Calgary
11h 11m
1 stop
ORD6:26 p.m.Chicago O'Hare Intl
23 Oct
ORD9:44 p.m.Chicago O'Hare Intl
17h 09m
1 stop
YYC1:53 p.m.Calgary
C$ 240
Find similar
United Airlines
20 Nov
YYC12:37 p.m.Calgary
3h 33m
ORD5:10 p.m.Chicago O'Hare Intl
25 Nov
ORD8:45 a.m.Chicago O'Hare Intl
3h 50m
YYC11:35 a.m.Calgary
C$ 258
Find similar
United Airlines
20 Nov
YYC6:15 a.m.Calgary
12h 25m
1 stop
ORD7:40 p.m.Chicago O'Hare Intl
25 Nov
ORD8:45 a.m.Chicago O'Hare Intl
3h 50m
YYC11:35 a.m.Calgary
C$ 265
Find similar

momondo 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, momondo users made 96,600 searches. Data last updated 31 July 2025.
Use the filters below to find and compare flights from Calgary to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 3/9

12:15 p.m.-4:43 p.m.

Nonstop3h 28m

Chicago O'Hare Intl

Tue 9/9

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

Nonstop3h 49m

C$ 183

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 4/9

12:15 p.m.-4:43 p.m.

Nonstop3h 28m

Chicago O'Hare Intl

Tue 9/9

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

Nonstop3h 49m

C$ 211

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 2/9

1:10 a.m.-9:51 a.m.

1 stop7h 41m

Chicago O'Hare Intl

Tue 9/9

6:20 p.m.-1:12 a.m.

1 stop7h 52m

C$ 228

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 24/9

6:15 a.m.-6:26 p.m.

1 stop11h 11m

Chicago O'Hare Intl

Thu 23/10

9:44 p.m.-1:53 p.m.

1 stop17h 09m

C$ 240

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Tue 23/9

1:10 a.m.-9:51 a.m.

1 stop7h 41m

Chicago O'Hare Intl

Thu 23/10

8:40 a.m.-3:50 p.m.

1 stop8h 10m

C$ 246

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Thu 20/11

12:37 p.m.-5:10 p.m.

Nonstop3h 33m

Chicago O'Hare Intl

Tue 25/11

8:45 a.m.-11:35 a.m.

Nonstop3h 50m

C$ 258

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 29/8

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

Nonstop3h 25m

Chicago O'Hare Intl

Thu 4/9

6:30 p.m.-11:50 a.m.

1 stop18h 20m

C$ 290

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Wed 3/9

7:55 a.m.-5:30 p.m.

1 stop8h 35m

Chicago O'Hare Intl

Tue 9/9

1:00 p.m.-10:57 p.m.

1 stop10h 57m

C$ 310

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 29/8

6:40 a.m.-4:45 p.m.

1 stop9h 05m

Chicago O'Hare Intl

Wed 3/9

1:00 p.m.-10:57 p.m.

1 stop10h 57m

C$ 320

CalgaryChicago

YYC - ORD

YYCORD

Calgary

Fri 19/9

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

Nonstop3h 25m

Chicago O'Hare Intl

Sun 21/9

8:30 p.m.-11:19 p.m.

Nonstop3h 49m

C$ 323

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Illinois from

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?

In general, April is the cheapest month to fly from Calgary to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 263. If you don’t want to visit Illinois in April, then you should wait until February to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 276.

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

According to our data, Friday is the cheapest day to fly to Illinois from Calgary. The lowest ticket price found for a Friday departure recently was C$ 670. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Tuesday, with ticket prices averaging around C$ 1,012.

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 afternoon. Flights from Calgary to Illinois during this time can be as low as C$ 364. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,466 on average. Flights to Illinois from Calgary at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 C$ 388 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 C$ 280 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?

You could potentially save up to 7% on your flight if you consider stops on a Calgary to Illinois flight.

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

C$ 124

Fastest flight time

3h 25m

Direct flights

Every day

Airports in Illinois

3 airports
The best one-way flight to Illinois from Calgary in the past 72 hours is C$ 124. The best round-trip flight deal from Calgary to Illinois found on momondo in the last 72 hours is C$ 183.
The fastest flight from Calgary to Illinois takes 3h 25m
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?

  • 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 necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 149Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
WestJetPriceFrom C$ 177Free CancellationRating
7.2
2,978 reviews
Search WestJet flights
DeltaPriceFrom C$ 184Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom C$ 185Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 252Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Calgary to Illinois . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Illinois from Calgary which offer a flexible booking policy as well as other useful filters and features.

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?

Yes. momondo can track prices for Calgary to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 5/8
Tue 12/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Illinois

Popular Cities in Illinois

Popular flights according to clicks in the last 7 days on momondo
Flights to Fort Lauderdalefrom C$ 166
Flights to Orlandofrom C$ 201
Flights to Las Vegasfrom C$ 164
Flights to New Yorkfrom C$ 210
Flights to Los Angelesfrom C$ 159
Flights to Miamifrom C$ 314
Flights to San Franciscofrom C$ 143
Flights to Honolulufrom C$ 321
Flights to Phoenixfrom C$ 207
Flights to Tampafrom C$ 182
Flights to Chicagofrom C$ 164
Flights to Dallasfrom C$ 324