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

KLM, British Airways, and American Airlines are the most popular carriers operating from Illinois to Denmark

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

As of February 2026, 2 flights take off from Illinois and land in Denmark each day. The most common flight departure time for this route is 7:00PM, with 100% of daily flights taking off in the evening.

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

As of February 2026, there are 15 flights per week flying from Illinois to Denmark. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.

What airlines fly to Denmark?

Scandinavian Airlines, Icelandair and United Airlines are the top three most popular airlines that fly to Denmark from Illinois according to our data. Scandinavian Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Denmark. Keep in mind that there are 11 different airlines that fly to Denmark on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Denmark were last updated today.

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

As of February 2026, there are 11 operators available to choose from for flights from Illinois to Denmark.

How old do you have to be to fly from Illinois to Denmark?

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 Illinois to Denmark.

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

The required travel and health documents for your Denmark trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denmark. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$259 Cheap Flights from Illinois to Denmark in 2026

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Find the cheapest flights from Illinois to Denmark

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:25 pm - 9:45 pm

ORD

CPH

19h 20m

1 stop

2:00 pm - 6:15 pm

CPH

ORD

11h 15m

1 stop

$468Icelandair

mar., abr. 21 - jue., abr. 30

7:10 pm - 5:45 pm

ORD

CPH

15h 35m

1 stop

6:35 pm - 4:25 pm

CPH

ORD

27h 50m

1 stop

$469TAP AIR PORTUGAL

mié., mar. 4 - jue., mar. 12

7:25 pm - 12:55 pm

ORD

CPH

10h 30m

1 stop

10:35 pm - 6:15 pm

CPH

ORD

26h 40m

1 stop

$470Icelandair

mié., abr. 8 - lun., abr. 13

5:10 pm - 4:25 pm

ORD

BLL

16h 15m

1 stop

2:20 pm - 2:15 pm

BLL

ORD

30h 55m

1 stop

$504Air France

lun., mar. 30 - lun., abr. 6

11:22 am - 4:15 pm

STL

CPH

21h 53m

2 stops

6:45 am - 7:30 pm

CPH

STL

19h 45m

2 stops

$513Finnair

lun., mar. 30 - mié., abr. 15

4:43 pm - 2:10 pm

ORD

BLL

14h 27m

2 stops

10:45 am - 10:03 pm

BLL

ORD

18h 18m

2 stops

$514Air Canada

lun., mar. 30 - lun., abr. 6

4:05 pm - 10:05 am

ORD

BLL

11h 00m

1 stop

10:45 am - 9:10 am

BLL

ORD

29h 25m

2 stops

$528Multiple Airlines

lun., mar. 30 - lun., abr. 6

7:15 am - 9:45 am

ORD

BLL

20h 30m

2 stops

7:15 pm - 8:25 pm

BLL

ORD

32h 10m

2 stops

$578Multiple Airlines

jue., mar. 26 - mar., mar. 31

6:38 pm - 3:55 pm

MDW

CPH

14h 17m

2 stops

9:00 am - 6:14 pm

CPH

MDW

16h 14m

2 stops

$609Air France

dom., may. 3 - vie., may. 8

4:05 pm - 10:50 am

STL

CPH

11h 45m

1 stop

6:20 am - 3:24 pm

CPH

STL

16h 04m

2 stops

$617Air Canada

lun., mar. 30 - mié., abr. 15

KLM flights from Illinois to Denmark

Our best KLM deals on Illinois to Denmark flight tickets

KLM

May 26

STL4:26 pmLambert-St Louis

31h 19m

1 stop

CPH6:45 amKastrup Copenhagen

Jun 11

CPH9:00 amKastrup Copenhagen

14h 55m

1 stop

STL4:55 pmLambert-St Louis

$854

KLM

Mar 20

ORD5:25 pmChicago O'Hare Intl

11h 55m

1 stop

BLL11:20 amBillund

Mar 28

BLL10:25 amBillund

10h 55m

1 stop

ORD3:20 pmChicago O'Hare Intl

$1,256

Scandinavian Airlines flights from Illinois to Denmark

Our best Scandinavian Airlines deals on Illinois to Denmark flight tickets

Scandinavian Airlines

Mar 30

ORD7:15 pmChicago O'Hare Intl

8h 10m

CPH10:25 amKastrup Copenhagen

Apr 8

CPH1:55 pmKastrup Copenhagen

9h 15m

ORD4:10 pmChicago O'Hare Intl

$487

Scandinavian Airlines

Apr 6

ORD7:15 pmChicago O'Hare Intl

8h 30m

CPH10:45 amKastrup Copenhagen

Apr 13

CPH1:55 pmKastrup Copenhagen

9h 15m

ORD4:10 pmChicago O'Hare Intl

$494

Scandinavian Airlines

Apr 20

ORD6:04 amChicago O'Hare Intl

19h 36m

1 stop

CPH8:40 amKastrup Copenhagen

Apr 27

CPH1:55 pmKastrup Copenhagen

9h 15m

ORD4:10 pmChicago O'Hare Intl

$515

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

mar. 4/21

7:25 pm-9:45 pm

1 stop19h 20m

Kastrup Copenhagen

jue. 4/30

2:00 pm-6:15 pm

1 stop11h 15m

$468

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

mié. 3/4

7:10 pm-5:45 pm

1 stop15h 35m

Kastrup Copenhagen

jue. 3/12

6:35 pm-4:25 pm

1 stop27h 50m

$469

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

mié. 4/8

7:25 pm-12:55 pm

1 stop10h 30m

Kastrup Copenhagen

lun. 4/13

10:35 pm-6:15 pm

1 stop26h 40m

$470

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

lun. 3/30

5:10 pm-4:25 pm

1 stop16h 15m

Billund

lun. 4/6

2:20 pm-2:15 pm

1 stop30h 55m

$504

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

lun. 3/30

11:22 am-4:15 pm

2 stops21h 53m

Kastrup Copenhagen

mié. 4/15

6:45 am-7:30 pm

2 stops19h 45m

$513

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

lun. 3/30

4:43 pm-2:10 pm

2 stops14h 27m

Billund

lun. 4/6

10:45 am-10:03 pm

2 stops18h 18m

$514

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

lun. 3/30

4:05 pm-10:05 am

1 stop11h 00m

Billund

lun. 4/6

10:45 am-9:10 am

2 stops29h 25m

$528

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

jue. 3/26

7:15 am-9:45 am

2 stops20h 30m

Billund

mar. 3/31

7:15 pm-8:25 pm

2 stops32h 10m

$578

ChicagoCopenhagen

MDW - CPH

MDWCPH

Chicago Midway

dom. 5/3

6:38 pm-3:55 pm

2 stops14h 17m

Kastrup Copenhagen

vie. 5/8

9:00 am-6:14 pm

2 stops16h 14m

$609

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

lun. 3/30

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

mié. 4/15

6:20 am-3:24 pm

2 stops16h 04m

$617

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 Illinois to Denmark

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 Denmark?

In general, February is the cheapest month to fly from Illinois to Denmark. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $492. If you aren’t able to travel to Denmark during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $515.

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

The cheapest day to depart from Illinois to Denmark is on a Wednesday. Travelers who choose to depart for Denmark on a Wednesday will often find tickets for as low as $553. On the other hand, Friday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $661.

What is the cheapest Illinois to Denmark flight route?

Fly from Chicago O'Hare Intl to Kastrup Copenhagen for the best Illinois - Denmark flight prices

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

You are more likely to see cheaper flights to Denmark from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Denmark for around $653 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denmark from Illinois for as low as $635 on momondo.

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

There are 3 cabin classes available to choose from on Illinois to Denmark 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 Illinois to Denmark flights?

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

Cheap Illinois to Denmark flight deals and tips

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

Best Price Found	$368
Fastest flight time	8h 05m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Denmark	19 airports

The best one-way flight to Denmark from Illinois in the past 72 hours is $368. The best round-trip flight deal from Illinois to Denmark found on momondo in the last 72 hours is $507.

The fastest flight from Illinois to Denmark takes 8h 05m

Direct flights go from Illinois to Denmark on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There are 19 airports in Denmark. From Illinois there are direct flights to Kastrup Copenhagen (CPH).

Search flight deals

When did momondo last update prices for flights from Illinois to Denmark?
Prices for flights from Illinois to Denmark were last updated today.
How many operators does momondo search for flights from Illinois to Denmark?
As of February 2026, there are 11 operators available to choose from for flights from Illinois to Denmark.
How old do you have to be to fly from Illinois to Denmark?
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 Illinois to Denmark.
What documentation or ID do you need to fly to Denmark?
The required travel and health documents for your Denmark trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denmark. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Denmark?
Based on momondo bookings for flights between Illinois and Denmark, the leading plane model is Boeing 787 Dreamliner, making up 15.46% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 14.81%, Boeing 767-300 with 14.74%, and Airbus A330-300 with 12.45%.

Best airlines flying from Illinois to Denmark

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $416	Free Cancellation	Rating 7.1 614 reviews	Search Icelandair flights
Scandinavian Airlines	PriceFrom $453	Free Cancellation	Rating 7.3 1,682 reviews	Search Scandinavian Airlines flights
American Airlines	PriceFrom $489	Free Cancellation	Rating 7.2 11,279 reviews	Search American Airlines flights
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 7,736 reviews	Search British Airways flights
Lufthansa	PriceFrom $514	Free Cancellation	Rating 6.8 7,782 reviews	Search Lufthansa flights
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.4 9,284 reviews	Search United Airlines flights
Air Canada	PriceFrom $541	Free Cancellation	Rating 7.1 10,717 reviews	Search Air Canada flights
SWISS	PriceFrom $548	Free Cancellation	Rating 7.6 1,872 reviews	Search SWISS flights
Finnair	PriceFrom $576	Free Cancellation	Rating 7.6 1,362 reviews	Search Finnair flights
KLM	PriceFrom $596	Free Cancellation	Rating 7.7 1,452 reviews	Search KLM flights

Why use momondo?

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

Finding the right flight to Denmark from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Denmark quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Illinois to Denmark flights to just show those with flexible booking policies.

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

Once you have performed a search for Illinois to Denmark flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Illinois to Denmark 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 Denmark trip

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Popular cities in Denmark

Flights to Copenhagenfrom $373

Flights to Billundfrom $426

Flights to Aalborgfrom $455

Flights to Aarhusfrom $422

Flights to Sønderborgfrom $867

Flights to Karupfrom $760

Flights to Esbjergfrom $1,311

Cheap flights from Illinois to Denmark from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Denmark departing on 5/5. 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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KLM flights from Illinois to Denmark

Our best KLM deals on Illinois to Denmark flight tickets

Scandinavian Airlines flights from Illinois to Denmark

Our best Scandinavian Airlines deals on Illinois to Denmark flight tickets

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

See travel insights to Denmark from

How to get the cheapest flight ticket from Illinois to Denmark

What is the cheapest month to fly to Denmark?

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

What is the cheapest Illinois to Denmark flight route?

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

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

Can stopping save me money on Illinois to Denmark flights?

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

What airlines fly to Denmark?

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

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

Cheap Illinois to Denmark flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Denmark

Best airlines flying from Illinois to Denmark

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

Why use momondo?

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

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

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

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

An easier way to manage your Denmark 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 Denmark

Popular cities in Denmark

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

Illinois flight routes

According to popular flight searches on momondo this year

Denmark flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Denmark

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denmark

List of cabin classes available on flights landing in Denmark. Availability may vary depending on flight origin and airline.

Complete your trip to Denmark

Explore popular destinations other users love

According to popular flight searches on momondo this year