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Denmark

$225+ Cheap flights from Illinois to Denmark

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Illinois to Denmark

Cheapest flights from Illinois to Denmark
Explore the most affordable flight options available from Illinois to Denmark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:10 amORD - AAL
2 stops19h 10mScandinavian Airlines
Sat 11/222:35 pmAAL - ORD
1 stop33h 10mScandinavian Airlines
Deal found 10/29$450
This Scandinavian Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:20 pmORD - CPH
Nonstop8h 05mScandinavian Airlines
Sat 12/132:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/28$459
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:15 pmORD - CPH
1 stop20h 25mTAP AIR PORTUGAL
Sun 12/146:00 amCPH - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 10/29$461
This KAYAK deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:35 amORD - CPH
2 stops17h 00mScandinavian Airlines
Thu 11/272:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/30$462
This Cheapflightsfares deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:10 amORD - CPH
1 stop16h 50mScandinavian Airlines
Sun 11/232:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/29$465
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:20 pmORD - CPH
Nonstop8h 05mScandinavian Airlines
Mon 12/82:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/29$466
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:10 pmORD - CPH
1 stop21h 30mTAP AIR PORTUGAL
Tue 11/256:30 pmCPH - ORD
1 stop27h 30mTAP AIR PORTUGAL
Deal found 10/29$471
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:50 pmORD - CPH
1 stop31h 10mMultiple Airlines
Fri 11/76:00 amCPH - ORD
1 stop19h 25mMultiple Airlines
Deal found 10/30$473
This Cheapflightsfares deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:20 pmORD - CPH
Nonstop8h 05mScandinavian Airlines
Fri 12/122:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/29$474
This Scandinavian Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:20 pmORD - CPH
Nonstop8h 05mScandinavian Airlines
Mon 12/82:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/29$477
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:50 pmORD - CPH
2 stops17h 45mMultiple Airlines
Thu 12/117:05 amCPH - ORD
1 stop13h 05mMultiple Airlines
Deal found 10/29$488
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:20 pmORD - CPH
Nonstop8h 05mScandinavian Airlines
Sun 12/72:30 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 10/29$496

Cheap flight deals from Illinois to Denmark

Keep the following information in mind while searching for Illinois to Denmark flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$449
(Scandinavian Airlines)

One-way from

$225
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$631

Good round-trip deal

$523 or less

Good one-way deal

$377 or less
Provider with most accurate pricing for Chicago (CHI)-Kastrup Copenhagen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Kastrup Copenhagen flights.
Search Deals
From Illinois to Denmark
Search Deals
One-way flight from Illinois to Denmark
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Denmark.
Search Deals
Price to beat on a one-way flight from Illinois to Denmark.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Illinois to Denmark that are best for you.

Fly from

Illinois

Fly to

Denmark

Route

Depart

Return

Price

ChicagoAalborg

ORD - AAL

ORDAAL

Chicago O'Hare Intl

Wed 3/4

7:30 am-9:20 am

2 stops18h 50m

Aalborg

Sun 3/8

6:25 pm-5:45 pm

1 stop29h 20m

$449

ChicagoAalborg

ORD - AAL

ORDAAL

Chicago O'Hare Intl

Sun 11/16

7:10 am-9:20 am

2 stops19h 10m

Aalborg

Sat 11/22

2:35 pm-4:45 pm

1 stop33h 10m

$450

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

Thu 1/15

7:20 pm-9:25 am

1 stop31h 05m

Billund

Mon 1/19

11:05 am-4:45 pm

1 stop12h 40m

$458

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 12/1

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Fri 12/5

2:30 pm-4:45 pm

Nonstop9h 15m

$459

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Thu 1/15

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Mon 1/19

2:30 pm-4:45 pm

Nonstop9h 15m

$461

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sat 11/15

10:35 am-10:35 am

2 stops17h 00m

Kastrup Copenhagen

Thu 11/27

2:30 pm-4:45 pm

Nonstop9h 15m

$462

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 11/12

6:30 pm-8:35 pm

1 stop19h 05m

Kastrup Copenhagen

Thu 11/27

1:25 pm-5:20 pm

1 stop10h 55m

$477

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 12/1

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Sat 12/6

2:30 pm-4:45 pm

Nonstop9h 15m

$477

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sat 11/29

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Fri 12/5

2:30 pm-4:45 pm

Nonstop9h 15m

$507

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 11/12

9:50 pm-5:35 pm

1 stop12h 45m

Kastrup Copenhagen

Thu 11/27

7:05 am-2:55 pm

2 stops14h 50m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 52 results
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Best time to book a flight from Illinois to Denmark

Have a flexible travel schedule? Discover the best time to fly to Denmark from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Denmark

What is the cheapest month to book a flight from Illinois to Denmark?

Currently, February is the cheapest month in which you can book a flight from Illinois to Denmark (average of $372). Flying from Illinois to Denmark in June is currently the most expensive (average of $634). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to DK?

Find hourly flight availability from Illinois to Denmark. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s typically best to fly out from Illinois to Denmark in the morning. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Illinois to Denmark?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Denmark. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Denmark flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Denmark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Denmark?

    For as low as $542, Scandinavian Airlines can have you in Denmark from Illinois in 16h 56m. The distance between Illinois and Denmark is about 4261 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Illinois to Denmark one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $251. Delta flights start at $415 while deals on Lufthansa start at $454 one-way.

  • Can I find deals for flights from Illinois to Denmark that include hotel bookings?

    Yes. In addition to deals on Illinois to Denmark flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Denmark?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Denmark.

  • Can I find deals for business class flights from Illinois to Denmark?

    Yes. Cheapflights offers flight deals from Illinois to Denmark by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Denmark?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Denmark (average of $372). Flying from Illinois to Denmark in June is currently the most expensive (average of $634). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to Denmark

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Denmark

Discover the top 10 airlines that operate flights from Illinois to Denmark. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$411Average$624FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$437Average$707FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$471Average$718FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$489Average$731FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$531Average$665FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$540Average$705FlexibilityNo cancel feeOn-time67%
SWISSCheapest$554Average$756FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$565Average$688FlexibilityNo cancel feeOn-time69%
FinnairCheapest$576Average$720FlexibilityNo cancel feeOn-time76%
DeltaCheapest$611Average$746FlexibilityNo cancel feeOn-timeN/A

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