$344 Find Cheap Flights from Copenhagen to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Copenhagen to Illinois departing on 8/13. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Copenhagen to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Copenhagen to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Copenhagen to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Copenhagen to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Copenhagen to Illinois

Mon, Aug 17 - Sun, Aug 23
British Airways Logo
3:20 pm - 11:34 pm
CPH
-
STL
15h 14m
1 stop
British Airways Logo
9:40 pm - 10:40 pm
STL
-
CPH
18h 00m
1 stop
$567British Airways
Wed, Nov 18 - Sun, Nov 22
Finnair Logo
6:05 am - 7:30 pm
CPH
-
STL
20h 25m
2 stops
Finnair Logo
1:20 pm - 6:35 pm
STL
-
CPH
22h 15m
2 stops
$569Finnair
Mon, Aug 17 - Sun, Aug 23
British Airways Logo
3:20 pm - 11:34 pm
CPH
-
STL
15h 14m
1 stop
British Airways Logo
6:45 pm - 8:50 pm
STL
-
CPH
19h 05m
2 stops
$571British Airways
Wed, Nov 18 - Sun, Nov 22
Multiple Airlines Logo
2:15 pm - 11:39 pm
CPH
-
STL
16h 24m
2 stops
Multiple Airlines Logo
5:45 pm - 2:40 pm
STL
-
CPH
13h 55m
2 stops
$582Multiple Airlines
Mon, Aug 17 - Sun, Aug 23
Multiple Airlines Logo
3:20 pm - 11:34 pm
CPH
-
STL
15h 14m
1 stop
Multiple Airlines Logo
9:40 pm - 8:50 pm
STL
-
CPH
16h 10m
1 stop
$600Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
American Airlines Logo
10:30 am - 10:25 pm
CPH
-
STL
18h 55m
2 stops
American Airlines Logo
4:49 pm - 7:05 pm
STL
-
CPH
19h 16m
2 stops
$604American Airlines
Thu, Dec 3 - Mon, Dec 7
American Airlines Logo
6:45 am - 7:30 pm
CPH
-
STL
19h 45m
2 stops
American Airlines Logo
3:22 pm - 2:50 pm
STL
-
CPH
16h 28m
2 stops
$605American Airlines
Mon, Aug 17 - Sun, Aug 23
Delta Logo
9:00 am - 11:58 pm
CPH
-
STL
21h 58m
2 stops
Delta Logo
8:48 am - 11:45 am
STL
-
CPH
19h 57m
1 stop
$606Delta
Sun, Oct 11 - Sun, Oct 18
Scandinavian Airlines Logo
1:55 pm - 4:10 pm
CPH
-
ORD
9h 15mnonstop
Scandinavian Airlines Logo
7:15 pm - 10:45 am
ORD
-
CPH
8h 30mnonstop
$614Scandinavian Airlines
Mon, Aug 17 - Sun, Aug 30
Delta Logo
9:00 am - 10:36 pm
CPH
-
MDW
20h 36m
2 stops
Delta Logo
9:59 am - 11:45 am
MDW
-
CPH
18h 46m
1 stop
$632Delta
Booking Insights

KAYAK's insights & trends for Copenhagen to Illinois flights

Get data-powered insights and trends into flights from Copenhagen to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Copenhagen to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Copenhagen to Illinois departing in October.

What is the cheapest Copenhagen to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Copenhagen found in the last 5 days was to Chicago, at $783 round-trip. The most popular route is from Copenhagen (CPH) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $783.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Copenhagen to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $782 on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $782.

Can I save money by flying with a layover from Copenhagen to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $553 on average.

What is the cheapest month to fly from Copenhagen to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Copenhagen to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Copenhagen to Illinois is May, when tickets cost $333 (return) on average. On the other hand, the most expensive months are June and October, when the average cost of round-trip tickets is $1,165 and $1,119 respectively.

What’s the cheapest day of the week to fly from Copenhagen to Illinois?

The average price of all round-trip flights from Copenhagen to Illinois clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Copenhagen to Illinois, look for departures on Wednesdays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from Illinois, Wednesday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Copenhagen to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Copenhagen to Illinois, you should book around 3 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$344
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Copenhagen to Chicago

Flights from Copenhagen to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Copenhagen to Illinois 
TFlew with Scandinavian Airlines
CPH
-
ORD
May 2026
Go through passport control as early as you can. The wait was very long and people nearly missed the flight.
JdubFlew with Scandinavian Airlines
CPH
-
ORD
Apr 2024
Remember to make time for passport control when going back and forth. It's after security. I was a little confused as a first time traveler.

FAQs - booking Illinois flights

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

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

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

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

Reviews of the top 3 airlines serving from Copenhagen to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Copenhagen to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Copenhagen 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.
7.4
Scandinavian AirlinesOverall score based on 1854 reviews
7.3Comfort
6.7Entertainment
7.7Boarding
6.7Food
8.0Crew
Airline reviews

It was ok but no WiFi I think I’ll fly Iceland air next time

6.0 GoodEmperor Billy, Jun 2026
CPH - IAD
Read more Scandinavian Airlines reviews

It was ok but no WiFi I think I’ll fly Iceland air next time

My daughter always gets sick when we order the gluten free meal option. Internet didn’t work as advertised.

All went smoothly. That's what I want on a long flight.

I expected more, but they will nickel and dime you for everything. I did not enjoy flying with this airline.

The flight was very cold, and the seats were rather uncomfortable. The food has been better on our other SAS experiences. Most significantly, the luggage with most of my wife's personal items and clothes didn't make the flight. Hoping for a quick resolution, but no real opportunity to speak with a Human has us concerned.

It was so hot on the plane. No air jets above the seats

Please see my comments for the flight from Chicago to Copenhagen

We were sitting in SAS plus. Super friendly, service that went above and beyond on a Full Flight too! Meals were deliscious and trays were cleared promptly. Generous drinks offered throughout the flight. Would like to suggest better movies on offer to watch.... In all genres and maybe more cooking shows? There was only 1, Nadia's Everyday Baking... Thank you

This was my first time flying SAS and used them for 4 flights. The crews, flight and communication was outstanding. I flew premium economy and was extremely impressed by their SAS lounges. I will 100% ise SAS again. Everyone was so pleasant!

little entertainment choices. Seat/bed too firm an no sleeping mat

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

I flew from Barcelona to Chicago on UA yesterday. The flight was on time, the pilots did a great job and the flight attendants were super nice. All of them. Also food was good, and the drinks, including wine were served a few times during our flight. I highly recommend this airline.

Boarded early, left early, arrived 40 mins early! A win win for me!

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

This flight is a quick way to get to Chicago, but a bit expensive.

Everyone at icel air just passes the buck if there's a problem which there was they don't want to know about it any company can be good if everything goes well it's what shows is when something doesn't go well how they handle it and trust me Iceland air does not know how to handle any kind of problem

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

At least one soda free, felt like I was nickeled to death.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

Highly disorganized company, poor customer service. Packed seats on a 737 for a trans-atlantic 9 hour flight. Greedy company policies, no meal or snack provided for 9 hour flight.

We had to be bussed to the plane. And it was raining. Not a pleasant experience.

Everything you need to know for your flight from Copenhagen to Illinois

Information on your arrival and departure airports