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Find cheap flights from Denmark to Illinois from $273

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denmark to Illinois departing on 5/20. 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
Fri 5/31
Fri 6/7

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January

High season

July

Cheapest flight

$273
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Copenhagen to Chicago

FAQs for booking flights from Denmark to Illinois

  • How does KAYAK find such low prices on flights from Denmark 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 Denmark to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Denmark 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 Denmark 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 Denmark with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denmark 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 Denmark up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Denmark to Illinois

 
Need help choosing which airline to fly with from Denmark 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.
7.8
SWISSOverall score based on 2038 reviews
8.4Crew
7.2Entertainment
7.4Food
7.9Boarding
7.6Comfort
Airline reviews

we were late to get to this connecting flight and SWISS decided to wait for us . Very nice of them

10.0 ExcellentAnonymous, Apr 2024ZRH - KSC
Read more about SWISS reviews

we were late to get to this connecting flight and SWISS decided to wait for us . Very nice of them

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

The plane was so hot upon boarding. Their boarding process was so unnecessarily long. Service was subpar.

Everything from the price to online checkin and the flight being on time to the crew and food was very good. The comfort level is fine--the seats are very close to each other in Economy. But I guess you get what you pay for.

Horrible experience. I was apparently picked at random for a security screening - that was the most demeaning experience I have had in my life with a guy poking and prodding and having me take off my shoes, move up my pants so he could swab my legs - telling me I couldn't bring more than some quantity of cookies - I had 3 boxes of cookies in my luggage. In the end he did let me keep them but that was really uncalled for. Harrassment in the name of security.

They went out of their way. It was very clean and friendly.

Liked being hydrated. Carryon weight was limited for cold weather clothes that are heavy... could test to improve if possible.

Luggage did not make it to Miami still not today! Screen did not work for couple hours- got a bate of chocolate as a peaceful offering. Crew tentative, seats are getting smaller- isle seat arm rest foes not fold- problem getting other 2 passengers to go to the toilet without hitting themselves

The two meals were plentiful and excellent. The drinks were continuous. Thanks, Crew very polite; however a bit "hazard" at the end as they were rushing us off; to prepare for the cleaning team and next flight. Baggage from Berlin was delayed; however through the apps etc; they kept me aware and informed.(.did receive my baggage about 36 hours after my flight arrival). Good experience; thank you.

Swiss Air rerouted me at the last minute and lost my luggage. At this time they still have not been able to locate it.

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Horrible flight attendant in back of economy that screamed at me, have already reported to United. Horrible food - for Gluten free, why would you assume the person is vegetarian? I was served some kind of horrible curry bean paste and multiple cold rolls and soggy vegetables with no seasoning... um no!

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.

Sorry my last review for prg to fra was for this flight. My prg to fra flight was fine but my second flight back to Washington DC was with a slow awful crew who wouldn’t come in a timely manner to take trash and take trash before serving coffee tea and was shoving other people’s bottles of water on me when we were not traveling together

Lufthansa was amazing. Definitely upgrade your seat if you can swing it - they take very good care of their passengers. Customs in DC is nothing short of a nightmare though. Stood in line waiting to go back through security for 30 minutes, had to RUN through and across two terminals to make my connection and only had 5 minutes to spare. Terrible. Very very poor coordination by the airport staff and CBP.

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

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

Pros: "Friendly crew and helpful staff"
Cons: "Missed connection from PEK to XIY due to delayed arrival and early departure. From XIY to PEK, booked and confirmed 11 departure, changed to 12:30 without notification or explaination. Rushed connections at PEK, pretty much ran from the minute left plan to another terminal, through custom, through all the health check points, security check. Just keep the fights on time and keep the original schedules, not arbitrarily change them."
Pros: "The price"
Cons: "Staff was not helpful and kind of rude unless you spoke their language. Food options were terrible and not very comfortable seat for 13+ hr flight."
Pros: "The food was good. It was nice that they supply wet hot towels before each meal. The seat was comfortable with the price I paid for. The rest room is nice and clean and quite spacious. The L’occitane toiletery bag was nice."
Cons: "It would be nice to supply mouthwash in the rest room. It would be nice to have a foot step at the bottom to open the trash container. The comforter is not washed and smells."
Cons: "Seats are narrow, leg room limited, and food is minimal."
Pros: "Beautiful new plane, professional crew, totally decent food."
Cons: "Economy for 13 hours is always a bit rough, but no more so on Air China than any other airline. And the price was so much lower."
Pros: "Boarding was a breeze, flight attendant onboard we attentive, choice of food orders at least two (in business class, can’t speak to first or main cabin passengers.) Flew from LA to Tokyo. Coming back from Hong Kong to LA. Fantastic flights, will use them again."
Pros: "The fare was good."
Cons: "More modern equipment. Tv screens. Movies. In flight magazines in English."
Cons: "Really old aircraft...please upgrade the video systems and make sure everyone has the same good optons"
Pros: "It doesn't have premium economy, the space is small."
Pros: "na"
Cons: "no space to store carry on bag food, crew's service, delay to depart"

50 minute of delay on a flight scheduled after 22pm is really annoying. This was even the only flight departing from Frankfurt Hahn on that evening so the delay was inexcusable

It is standard with Ryanair, as FF with Ryanair you dont expect too much, and Ryanair never disappoints. At least it is reliable.

Very unpleasant staff, disgusting service, ignoring requests, refusal to help

Cheap flights as you expect with Ryanair. I would take cheaper flights over entertainment and comfort for short haul travel. Main issue is usually delays at airports. In this case we landed roughly 2hr30 later than planned due to earlier delays with the plane. Not the worst I imagine

O voo atrasou um bom bocado A tripulação não era comunicativa,não fez vendas... Não abordava os passageiros... A 1°vez que me acontece tal coisa 🤷‍♀️

A normal Ryanair flight = too many announcements to sale something, hard landing. Otherwise, good value for money

Largas colas para el check-in, por seguridad, sin explicación, el equipaje de mano pequeño tuvo que pasar a bodega,

Enjoyed our flight with Ryanair to Arrecife. Flight boarded pretty much on time, crew were welcoming and very good. Generally good for a frequent low cost flight, Seats could however have been more comfortable.

Toulouse Alicante, excellent. But the 2 next fligth by Air Europa canceled. Bad bad

Boarding at Arrecife was commended way too early. Far too long for elderly to be kept standing on their feet. Otherwise we’ll done to all staff.

Book cheap flights from Denmark to Illinois

Recent round-trip flight deals

10/4Fri
1 stopKLM
27h 00mAAL-ORD
10/16Wed
1 stopKLM
10h 25mORD-AAL
$372
10/4Fri
2 stops
17h 36mAAL-ORD
10/16Wed
1 stop
10h 25mORD-AAL
$382
10/17Thu
1 stopFinnair
21h 00mCPH-ORD
10/21Mon
1 stopFinnair
12h 35mORD-CPH
$383
6/26Wed
1 stopLufthansa
11h 45mCPH-ORD
7/7Sun
1 stopLufthansa
11h 55mORD-CPH
$531
6/26Wed
1 stopSWISS
23h 55mCPH-ORD
7/4Thu
1 stopSWISS
16h 55mORD-CPH
$559
8/16Fri
2 stopsSWISS
28h 45mCPH-ORD
12/13Fri
2 stopsSWISS
42h 15mORD-CPH
$581
10/2Wed
1 stopTurkish Airlines
16h 05mCPH-ORD
10/13Sun
1 stopTurkish Airlines
24h 00mORD-CPH
$662
7/13Sat
1 stopFinnair
29h 00mCPH-ORD
11/23Sat
2 stopsFinnair
31h 25mORD-CPH
$669
7/20Sat
1 stopLufthansa
11h 45mCPH-ORD
11/23Sat
1 stopLufthansa
12h 10mORD-CPH
$695
10/7Mon
2 stopsTurkish Airlines
46h 14mCPH-STL
10/16Wed
2 stopsTurkish Airlines
37h 21mSTL-CPH
$1,463

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5/20Mon
3 stops
43h 34mCPH-ORD
$273
5/10Fri
2 stops
33h 08mCPH-ORD
$279
5/20Mon
2 stops
32h 45mCPH-ORD
$282
9/11Wed
1 stopFinnair
21h 50mCPH-ORD
$425
6/9Sun
1 stopFinnair
15h 40mCPH-ORD
$498
7/12Fri
1 stopAmerican Airlines
15h 40mCPH-ORD
$510
8/27Tue
1 stopBritish Airways
13h 59mCPH-STL
$510
8/27Tue
1 stopAmerican Airlines
13h 59mCPH-STL
$513
6/3Mon
1 stopTurkish Airlines
16h 05mCPH-ORD
$801
10/14Mon
1 stopTurkish Airlines
24h 10mCPH-ORD
$803

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Last minute flights to Illinois

Last minute flight, train and bus deals

5/4Sat
multi-stop
22h 05mCPH-ORD
5/12Sun
multi-stop
17h 10mORD-CPH
$582
5/4Sat
multi-stop
28h 55mCPH-ORD
5/12Sun
multi-stop
17h 10mORD-CPH
$587
5/4Sat
multi-stop
13h 20mCPH-ORD
5/12Sun
multi-stop
16h 55mORD-CPH
$647
5/3Fri
multi-stop
13h 15mCPH-ORD
5/11Sat
multi-stop
16h 08mORD-CPH
$682
5/3Fri
multi-stop
24h 20mCPH-ORD
5/11Sat
multi-stop
15h 15mORD-CPH
$779
5/3Fri
multi-stop
23h 57mCPH-ORD
5/11Sat
multi-stop
17h 30mORD-CPH
$816
5/3Fri
multi-stop
14h 54mCPH-ORD
5/11Sat
nonstop
8h 30mORD-CPH
$1,356
5/4Sat
nonstopScandinavian Airlines
9h 10mCPH-ORD
5/12Sun
multi-stopScandinavian Airlines
12h 55mORD-CPH
$1,392
5/3Fri
nonstopScandinavian Airlines
9h 10mCPH-ORD
5/11Sat
nonstopScandinavian Airlines
8h 30mORD-CPH
$1,526
5/4Sat
nonstopScandinavian Airlines
9h 10mCPH-ORD
5/12Sun
nonstopScandinavian Airlines
8h 30mORD-CPH
$1,528

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Flights to Illinois

Return flight deals:

Illinois - Denmark

Cabin classes:

$2,717
$1,052
$491