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Find cheap flights from Calgary to Illinois from C$ 161

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Calgary to Illinois departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 4/6
Tue 11/6

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
ChicagodirectC$ 270
Decatur
Decatur2 stopsC$ 996

Good to know

Low season

January

High season

August

Cheapest flight

C$ 161
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly (13% more expensive on average)
Flight from Calgary to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Calgary to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Calgary to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Calgary to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Calgary is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Calgary to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Illinois with an airline and back to Calgary with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Calgary to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Illinois from Calgary up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 3% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Calgary to Illinois

 
Need help choosing which airline to fly with from Calgary to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
China AirlinesOverall score based on 941 reviews
8.6Crew
8.3Boarding
7.8Food
8.1Entertainment
8.0Comfort
Airline reviews

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

8.0 ExcellentMichell, Feb. 2024TPE - LAX
Read more about China Airlines reviews

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

The plane was uncomfortable. I paid extra for more legroom but the seat was still uncomfortable. Other seats on the same exact row didn’t have to pay extra but still have extra legroom. I didn’t understand why I needed to pay $170 for. It was Iike China airline just wants to make money off their passengers. It was unfair.

Free Wi-Fi could have been better in the Airport.

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Flight was delay almost 2 hours from Hong Kong to Taipei. Last minute gate change from 24 to 66. Long way walk. We need to run in the Taipei airport to catch our next flight from Taipei to Vancouver. That is so suck!

Excellent staff made the boarding process fast and easy. Friendly crews on both flights from Saigon to Taipei and Taipei to Los Angeles. Will fly China Airlines again.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

The plane was an older model and the entertainment was hard to enjoy on those small screens. I struggled to see clear anything I wanted to watch. The seats where a bit uncomfortable but for a 3 hours flight it was pretty ok. The rest of services were excellent. Highly recommend China Airlines to others.

I like WJ but I don’t like traveling anymore

Good flight. No I’m seat entertainment. But my phone worked just fine on the west jet app.

4 hour delay, lost our bags, staff was loud and it was an overnight flight

We were late boarding, but it all worked out. So, no problem.

It was good but not comfortable seat with the long legged persons.

No problems here. WestJet does a good job, even on their short haul flights

Boarding was fine, but then we were delayed a while due to some baggage issues, then de-icing.

Tried to reserves seats and WestJet My Trip shows not available until 24 hours before the flight. When check-in was finally available and I tried to get seats again I was not able to get to select seats for me and my wife together. All in all, was not able to select seats together on Kiwi, paid extra for seats on Westjet and still did not got seats together, not pleasant for such a long flight and with my wife not very good with flying, disappointed on the way the system works with regarding to seats reservations, even with paying extra for them.

Flight full. 'Volunteers' to check hand luggage. Checked hand luggage is lost

Not the fault of WestJet but we had to wait in the plane on the tarmac in Cancun for 1 hour.

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

We were delayed an hour leaving Munich (No fault of the crew). They kept us posted on the status so we knew what was going on, but as a result we missed our connection in Chicago and the communication on connecting flights was pretty poor as we disembarked. It was already stressful and some of that could have been reduced by better communications about where to find transfers, etc.

One problem, but a serious one - the plane is built with electric windows that tint dark to reduce light. Sitting next to the window is VERY UNCOMFORTABLE as it emits so much HEAT in the face when tinted.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

Wifi wasn't working on one of the UA flights after boarding.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Leg room was lacking. Legs crammed into seat in front.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

Flight was delayed, I had to put my luggage all the way in the back! They served only a beverage no snack on the way in Air Canada, definitely not a good first impression.

I think Air Canada is the only airline I've flown where they don't give you at least a free cookie.

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

All but one of four were on time. One was delayed for an hour

It took 5 hour to get a crew to D Ice the plan. We had to sit on the runway for 5 hrs. in Calgary. It snows most of the winter. No proactive plan. In addition, after 3 calls to customer service they couldn't figure out how to have my wife and myself sit together on her birthday weekend. Everybody kept passing the buck. No decision from customer service, luggage drop off or check in team. The experience was a complete mess! I don't think we'll ever fly on this airline again.

When we got to the airport for our flight from Chicago to Montreal which was scheduled for 2.00 p.m. they had no record of it and booked us on a flight at 3.30 very disappointing . We also had to pay 50.00 each for a seat. All things considered ,I will never book thru Kayak again. Next time I will only book directly thru Air Canada no second party booking Sue

The wifi I paid for did not work. The seats are tight.

There were no free snacks…little pretzel bag or cookies like we had on our flight out.

Mostly crew good and the flight was safe and comfortable but service was lacking. For an overnight flight of 8hrs 50 it took some two hours to get served a drink and dinner after take off. I asked for Laurent Perrier champagne and was brought Perrier water, which I queried and asked where was the champagne. No response. The issue came up again an hour later when dinner was starting to be served and I was asked whether I wanted another drink, when I reminded I was still waiting for my first champagne! Apologies ensued but dinner service was quite slow. For breakfast I never did get served the hot course! So - no complaints and compliments on the safety of the flight but service underwhelming (and I brought them candies!)

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

Air Canada from Edmonton to Toronto was disappointing but Lufthansa from Toronto to Frankfurt was excellent.

Our flight to Chicago O'Hare was delayed an hour, causing us to miss our connection to MSP and spend an extra 3 hours at O'Hare so we could board a plane with a damaged door and wait another 45 minutes or so. The crew was great, the food decent, The drinks were great: 2 glasses of a nice South African Shiraz, an ice cold can of Beck's Beer, and Dewar's White Label on the rocks.

A350 has great entertainment. Make sure to watch the plane's external tail and nose camera's on landing and take off. Seats were a little hard for a 10 hour flight. I am gluten intolerant, they had good alternative meals for me on the flight.

Boarding was horrible. We were packed into a bus with few seats and made to stand for 10 to 15 minutes, then driven for 5 minutes on wild curves. Complementary food and drink was a tiny chocolate and a bottle of water. Seating was cramped. Aircraft had no video.

didn’t even get to go one of my returning flights cancelled and I wasn’t even in their system, vacation ruined thanks for nothing

Need more time for connecting flights in Munich Food seems worse now on Lufthansa Very uncomfortable seats

Better flight than mum to Frankfurt. But food was very mediocre.

Flight landed on time but land services kept us in the plane for 3 hours. I missed connecting flight.

Book cheap flights from Calgary to Illinois

Recent round-trip flight deals

18/6Tue
directWestJet
3h 27mYYC-ORD
25/6Tue
directWestJet
3h 45mORD-YYC
C$ 270
16/5Thu
directWestJet
3h 35mYYC-ORD
18/5Sat
directWestJet
3h 27mORD-YYC
C$ 275
10/7Wed
directWestJet
3h 27mYYC-ORD
14/7Sun
directWestJet
3h 45mORD-YYC
C$ 309
23/5Thu
directDelta
3h 35mYYC-ORD
31/5Fri
directDelta
3h 27mORD-YYC
C$ 368
11/5Sat
1 stopDelta
8h 00mYYC-MDW
14/5Tue
2 stopsDelta
12h 14mMDW-YYC
C$ 371
26/9Thu
1 stopAir Canada
7h 16mYYC-ORD
2/10Wed
1 stopAir Canada
9h 49mORD-YYC
C$ 372
23/10Wed
1 stopAir Canada
7h 53mYYC-ORD
26/10Sat
1 stopAir Canada
7h 45mORD-YYC
C$ 390
26/10Sat
1 stopUnited Airlines
16h 32mYYC-ORD
29/10Tue
1 stopUnited Airlines
9h 53mORD-YYC
C$ 482
29/5Wed
1 stopUnited Airlines
7h 34mYYC-ORD
2/6Sun
directUnited Airlines
3h 46mORD-YYC
C$ 523
21/7Sun
2 stopsLufthansa
49h 27mYYC-STL
4/8Sun
2 stopsLufthansa
48h 01mSTL-YYC
C$ 16,573

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Recent one-way flight deals

1/6Sat
directWestJet
3h 35mYYC-ORD
C$ 161
1/6Sat
directWestJet
3h 35mYYC-ORD
C$ 171
4/6Tue
1 stopAir Canada
7h 36mYYC-ORD
C$ 178
3/6Mon
1 stopAir Canada
7h 54mYYC-ORD
C$ 186
5/6Wed
2 stopsDelta
12h 00mYYC-ORD
C$ 197
29/5Wed
2 stopsDelta
12h 00mYYC-ORD
C$ 205
5/6Wed
directAmerican Airlines
3h 25mYYC-ORD
C$ 226
15/5Wed
1 stopAmerican Airlines
15h 15mYYC-ORD
C$ 255
29/5Wed
directUnited Airlines
3h 29mYYC-ORD
C$ 267
3/7Wed
directUnited Airlines
3h 29mYYC-ORD
C$ 290

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Last minute flights from Calgary to Illinois

Last minute flight, train and bus deals

10/5Fri
multi-stopDelta
14h 13mYYC-MDW
14/5Tue
multi-stopDelta
12h 14mMDW-YYC
C$ 642
10/5Fri
multi-stopWestJet
26h 15mYYC-STL
12/5Sun
multi-stopWestJet
15h 35mSTL-YYC
C$ 716
8/5Wed
multi-stopDelta
9h 21mYYC-STL
12/5Sun
multi-stopDelta
15h 16mSTL-YYC
C$ 717
8/5Wed
multi-stopWestJet
11h 52mYYC-STL
12/5Sun
multi-stopWestJet
15h 35mSTL-YYC
C$ 721
7/5Tue
multi-stopWestJet
15h 16mYYC-STL
12/5Sun
multi-stopWestJet
15h 35mSTL-YYC
C$ 728
10/5Fri
multi-stopWestJet
18h 11mYYC-STL
12/5Sun
multi-stopWestJet
13h 03mSTL-YYC
C$ 729
7/5Tue
multi-stopWestJet
13h 02mYYC-STL
12/5Sun
multi-stopWestJet
17h 09mSTL-YYC
C$ 736
9/5Thu
multi-stopWestJet
18h 55mYYC-STL
12/5Sun
multi-stopWestJet
15h 35mSTL-YYC
C$ 781
9/5Thu
multi-stopWestJet
13h 02mYYC-STL
12/5Sun
multi-stopWestJet
15h 35mSTL-YYC
C$ 843
8/5Wed
multi-stop
30h 10mYYC-STL
12/5Sun
multi-stop
22h 29mSTL-YYC
C$ 948

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Calgary - Illinois Flights

Departure:

Calgary (YYC)Canada

Return flight deals:

Illinois - Calgary

Cabin classes:

C$ 2,889
C$ 2,447
C$ 2,466
C$ 265

Browse origins: