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Cheap flights from Illinois to Denmark from $157

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 10/29. 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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Find the cheapest flights from Illinois to Denmark

Cheap round-trip flights

Austrian Airlines Logo
4:20 pm - 7:10 pmORD-CPH
19h 50m1 stop
Austrian Airlines Logo
5:45 pm - 1:20 pmCPH-ORD
26h 35m1 stop
$283Austrian Airlines
Find Deal
Sun, Sep 7 - Sat, Sep 20
Icelandair Logo
7:30 pm - 2:45 pmORD-CPH
13h 15m1 stop
Icelandair Logo
12:55 pm - 5:20 pmCPH-ORD
11h 25m1 stop
$416Icelandair
Find Deal
Sun, Oct 26 - Sun, Nov 2
TAP AIR PORTUGAL Logo
8:15 pm - 11:40 pmORD-CPH
20h 25m1 stop
TAP AIR PORTUGAL Logo
5:40 pm - 4:10 pmCPH-ORD
29h 30m1 stop
$437TAP AIR PORTUGAL
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Fri, Jan 16 - Thu, May 14
Scandinavian Airlines Logo
7:20 pm - 10:25 amORD-CPH
8h 05mnonstop
Scandinavian Airlines Logo
2:30 pm - 4:45 pmCPH-ORD
9h 15mnonstop
$447Scandinavian Airlines
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Fri, Nov 7 - Sat, Nov 15
Scandinavian Airlines Logo
7:15 pm - 10:45 amORD-CPH
8h 30mnonstop
Scandinavian Airlines Logo
2:30 pm - 4:45 pmCPH-ORD
9h 15mnonstop
$453Scandinavian Airlines
Find Deal
Mon, Oct 20 - Mon, Nov 3
TAP AIR PORTUGAL Logo
8:15 pm - 11:40 pmORD-CPH
20h 25m1 stop
TAP AIR PORTUGAL Logo
6:00 am - 3:00 pmCPH-ORD
16h 00m1 stop
$457TAP AIR PORTUGAL
Find Deal
Fri, Jan 9 - Sun, Jan 18
Lufthansa Logo
9:40 pm - 11:15 pmORD-BLL
18h 35m1 stop
Lufthansa Logo
2:55 pm - 7:55 pmBLL-ORD
12h 00m1 stop
$540Lufthansa
Find Deal
Tue, Aug 19 - Tue, Aug 26
Lufthansa Logo
9:40 pm - 11:15 pmORD-BLL
18h 35m1 stop
Lufthansa Logo
6:00 am - 7:55 pmBLL-ORD
20h 55m1 stop
$541Lufthansa
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Tue, Aug 19 - Tue, Aug 26
Air France Logo
1:43 pm - 10:05 amMDW-CPH
13h 22m1 stop
Air France Logo
12:20 pm - 5:37 pmCPH-MDW
12h 17m1 stop
$557Air France
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Tue, Aug 19 - Wed, Aug 27
Air France Logo
9:30 am - 1:00 pmMDW-CPH
20h 30m2 stops
Air France Logo
6:45 am - 4:23 pmCPH-MDW
16h 38m2 stops
$754Air France
Find Deal
Fri, Nov 28 - Mon, Dec 29

United Airlines flights from Illinois to Denmark

Our best United Airlines deals on Illinois to Denmark flight tickets
United Airlines
Aug 18
ORD3:35 pmChicago O'Hare Intl
32h 35m
1 stop
CPH7:10 amKastrup Copenhagen
Aug 25
CPH6:10 amKastrup Copenhagen
19h 15m
2 stops
ORD6:25 pmChicago O'Hare Intl
$546
Find similar
United Airlines
Aug 13
ORD2:20 pmChicago O'Hare Intl
16h 55m
1 stop
CPH2:15 pmKastrup Copenhagen
Aug 24
CPH6:05 amKastrup Copenhagen
11h 55m
1 stop
ORD11:00 amChicago O'Hare Intl
$554
Find similar
United Airlines
Aug 16
ORD7:05 pmChicago O'Hare Intl
12h 10m
1 stop
CPH2:15 pmKastrup Copenhagen
Aug 23
CPH6:10 amKastrup Copenhagen
15h 45m
1 stop
ORD2:55 pmChicago O'Hare Intl
$556
Find similar

Virgin Atlantic flights from Illinois to Denmark

Our best Virgin Atlantic deals on Illinois to Denmark flight tickets
Virgin Atlantic
Aug 11
ORD10:35 amChicago O'Hare Intl
12h 55m
1 stop
CPH6:30 amKastrup Copenhagen
Aug 27
CPH9:00 amKastrup Copenhagen
20h 37m
2 stops
ORD10:37 pmChicago O'Hare Intl
$570
Find similar
Virgin Atlantic
Aug 11
MDW6:42 pmChicago Midway
28h 48m
2 stops
CPH6:30 amKastrup Copenhagen
Aug 27
CPH9:00 amKastrup Copenhagen
19h 44m
2 stops
MDW9:44 pmChicago Midway
$580
Find similar
Virgin Atlantic
Sep 4
MDW6:00 amChicago Midway
17h 30m
2 stops
CPH6:30 amKastrup Copenhagen
Sep 11
CPH9:00 amKastrup Copenhagen
19h 36m
2 stops
MDW9:36 pmChicago Midway
$619
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Denmark 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 832,500 searches. Data last updated August 5, 2025.
Use the filters below to find and compare flights from Illinois to Denmark that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 9/7

4:20 pm-7:10 pm

1 stop19h 50m

Kastrup Copenhagen

Sat 9/20

5:45 pm-1:20 pm

1 stop26h 35m

$283

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 10/26

7:30 pm-2:45 pm

1 stop13h 15m

Kastrup Copenhagen

Sun 11/2

12:55 pm-5:20 pm

1 stop11h 25m

$416

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Fri 1/16

8:15 pm-11:40 pm

1 stop20h 25m

Kastrup Copenhagen

Thu 5/14

5:40 pm-4:10 pm

1 stop29h 30m

$437

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Fri 11/7

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Sat 11/15

2:30 pm-4:45 pm

Nonstop9h 15m

$447

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 10/20

7:15 pm-10:45 am

Nonstop8h 30m

Kastrup Copenhagen

Mon 11/3

2:30 pm-4:45 pm

Nonstop9h 15m

$453

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Fri 1/9

8:15 pm-11:40 pm

1 stop20h 25m

Kastrup Copenhagen

Sun 1/18

6:00 am-3:00 pm

1 stop16h 00m

$457

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

Tue 8/19

9:40 pm-11:15 pm

1 stop18h 35m

Billund

Tue 8/26

2:55 pm-7:55 pm

1 stop12h 00m

$540

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

Tue 8/19

9:40 pm-11:15 pm

1 stop18h 35m

Billund

Tue 8/26

6:00 am-7:55 pm

1 stop20h 55m

$541

ChicagoCopenhagen

MDW - CPH

MDWCPH

Chicago Midway

Tue 8/19

1:43 pm-10:05 am

1 stop13h 22m

Kastrup Copenhagen

Wed 8/27

12:20 pm-5:37 pm

1 stop12h 17m

$557

ChicagoCopenhagen

MDW - CPH

MDWCPH

Chicago Midway

Fri 11/28

9:30 am-1:00 pm

2 stops20h 30m

Kastrup Copenhagen

Mon 12/29

6:45 am-4:23 pm

2 stops16h 38m

$754

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denmark from

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

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 $443. 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 $464.

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

The cheapest day to depart from Illinois to Denmark is on a Monday. Travelers who choose to depart for Denmark on a Monday will often find tickets for as low as $554. 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 $682.

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

Flying to Denmark from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $614 when looking at flights departing in the evening. At noon is when there is more demand to fly to Denmark, so prices are often more expensive at around $713 per ticket.

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 $640 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 $574 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?

You could potentially save up to 48% on your flight if you consider stops on a Illinois to Denmark flight.

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

$157

Fastest flight time

8h 05m

Direct flights

Every day

Airports in Denmark

2 airports
The best one-way flight to Denmark from Illinois in the past 72 hours is $157. The best round-trip flight deal from Illinois to Denmark found on momondo in the last 72 hours is $283.
The fastest flight from Illinois to Denmark takes 8h 05m
Direct flights go from Illinois to Denmark every day.
There are 2 airports near Denmark: Kastrup Copenhagen (CPH), Aalborg (AAL)
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?

  • 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?

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
IcelandairPriceFrom $384Free CancellationRating
7.0
524 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $444Free CancellationRating
7.4
1,462 reviews
Search Scandinavian Airlines flights
FinnairPriceFrom $476Free CancellationRating
7.6
1,319 reviews
Search Finnair flights
American AirlinesPriceFrom $489Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LufthansaPriceFrom $490Free CancellationRating
6.8
7,287 reviews
Search Lufthansa flights
British AirwaysPriceFrom $498Free CancellationRating
6.6
7,237 reviews
Search British Airways flights
United AirlinesPriceFrom $511Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
Air CanadaPriceFrom $533Free CancellationRating
7.1
9,890 reviews
Search Air Canada flights
SWISSPriceFrom $554Free CancellationRating
7.6
1,689 reviews
Search SWISS flights
DeltaPriceFrom $588Free CancellationRating
8.0
7,985 reviews
Search Delta 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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Find better results for your trip to Denmark

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