Denmark

$344+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Apr 7 — Apr 141
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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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$531
(Ticket)

One-way from

$344
(oojo)

Popular in

June

Cheapest in

February

Average price

$575

Good round-trip deal

$576 or less

Good one-way deal

$366 or less
Provider with most accurate pricing for Chicago (CHI)-Kastrup Copenhagen flight deals.
Provider most trusted by Cheapflights users for Chicago (CHI)-Kastrup Copenhagen flights.
From Illinois to Denmark
One-way flight from Illinois to Denmark
Highest demand for flights based on searches. 21% potential increase in price ($175 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Illinois to Denmark.
Price to beat on a one-way flight from Illinois to Denmark.

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 April 2, 2025.

This Gotogate deal was found by Cheapflights users on 4/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:25 pmORD - CPH
1 stop19h 20mIcelandair
Sat 9/2710:35 pmCPH - ORD
1 stop29h 40mIcelandair
Deal found 4/1$534
This Flightsearch deal was found by Cheapflights users on 4/1. 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 Flightsearch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/137:15 pmORD - CPH
Nonstop8h 30mScandinavian Airlines
Mon 4/211:55 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 4/1$542
This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/210:53 amORD - CPH
2 stops17h 32mAir Canada
Tue 4/812:55 pmCPH - ORD
1 stop13h 35mAir Canada
Deal found 4/1$569
This FlightHub deal was found by Cheapflights users on 4/1. 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 4/24:41 pmORD - CPH
1 stop11h 44mMultiple Airlines
Mon 4/78:10 pmCPH - ORD
1 stop26h 45mMultiple Airlines
Deal found 4/1$580
This Finnair deal was found by Cheapflights users on 4/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/299:30 pmORD - CPH
1 stop11h 45mFinnair
Tue 5/1312:25 pmCPH - ORD
1 stop12h 25mFinnair
Deal found 4/1$581
This Virgin Atlantic deal was found by Cheapflights users on 4/1. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:00 amORD - CPH
1 stop16h 30mVirgin Atlantic
Wed 5/149:00 amCPH - ORD
2 stops16h 48mVirgin Atlantic
Deal found 4/1$595
This Finnair deal was found by Cheapflights users on 4/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/610:25 pmORD - BLL
2 stops32h 00mFinnair
Wed 5/282:10 pmBLL - ORD
2 stops28h 35mFinnair
Deal found 4/1$596
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/27:00 amORD - CPH
2 stops28h 45mDelta
Mon 4/711:50 amCPH - ORD
1 stop33h 50mDelta
Deal found 4/1$601
This British Airways deal was found by Cheapflights users on 3/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:10 pmORD - BLL
1 stop14h 10mBritish Airways
Tue 9/165:05 pmBLL - ORD
2 stops23h 08mBritish Airways
Deal found 3/31$603
This Virgin Atlantic deal was found by Cheapflights users on 4/1. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/116:38 pmMDW - CPH
2 stops28h 52mVirgin Atlantic
Wed 5/219:00 amCPH - MDW
2 stops19h 27mVirgin Atlantic
Deal found 4/1$605
This Iberia deal was found by Cheapflights users on 4/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/89:15 pmORD - CPH
1 stop19h 05mBritish Airways
Wed 4/167:20 amCPH - ORD
1 stop17h 55mBritish Airways
Deal found 4/1$606
This oojo deal was found by Cheapflights users on 3/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2311:45 pmORD - CPH
1 stop16h 50mTurkish Airlines
Sun 9/77:20 pmCPH - ORD
1 stop33h 40mTurkish Airlines
Deal found 3/31$612

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 April 2, 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

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Fri 9/19

7:25 pm-9:45 pm

1 stop19h 20m

Kastrup Copenhagen

Sat 9/27

10:35 pm-9:15 pm

1 stop29h 40m

$534

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 4/13

7:15 pm-10:45 am

Nonstop8h 30m

Kastrup Copenhagen

Mon 4/21

1:55 pm-4:10 pm

Nonstop9h 15m

$542

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 4/29

9:30 pm-4:15 pm

1 stop11h 45m

Kastrup Copenhagen

Tue 5/13

12:25 pm-5:50 pm

1 stop12h 25m

$581

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 5/7

7:00 am-6:30 am

1 stop16h 30m

Kastrup Copenhagen

Wed 5/14

9:00 am-6:48 pm

2 stops16h 48m

$595

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

Tue 5/6

10:25 pm-1:25 pm

2 stops32h 00m

Billund

Wed 5/28

2:10 pm-11:45 am

2 stops28h 35m

$596

ChicagoBillund

ORD - BLL

ORDBLL

Chicago O'Hare Intl

Tue 9/9

7:10 pm-4:20 pm

1 stop14h 10m

Billund

Tue 9/16

5:05 pm-9:13 am

2 stops23h 08m

$603

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 4/13

8:25 pm-7:05 am

1 stop27h 40m

Kastrup Copenhagen

Mon 4/21

1:55 pm-4:10 pm

Nonstop9h 15m

$603

ChicagoCopenhagen

MDW - CPH

MDWCPH

Chicago Midway

Sun 5/11

6:38 pm-6:30 am

2 stops28h 52m

Kastrup Copenhagen

Wed 5/21

9:00 am-9:27 pm

2 stops19h 27m

$605

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 5/14

10:25 pm-8:05 pm

1 stop14h 40m

Kastrup Copenhagen

Wed 5/21

7:20 am-5:00 pm

1 stop16h 40m

$605

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 5/6

10:25 am-9:00 am

2 stops15h 35m

Kastrup Copenhagen

Tue 5/13

9:00 am-9:31 pm

1 stop19h 31m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 46 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, November is the cheapest month in which you can book a flight from Illinois to Denmark (average of $523). Flying from Illinois to Denmark in June is currently the most expensive (average of $953). 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 April 2, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Denmark as you normally would.

Rainfall in Denmark by month

Plan your trip to Denmark by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denmark ranges from 0.8 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Denmark when rainfall is around 0.8 in.

Temperature in Denmark by month

Plan your trip to Denmark by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denmark, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Denmark

Get insights into the airlines that provide service to Denmark. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denmark. Reviews last updated April 2, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and LOT from Illinois to Denmark to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.
  • 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 $344. Icelandair flights start at $345 while deals on Virgin Atlantic start at $460 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, November is the cheapest month in which you can book a flight from Illinois to Denmark (average of $523). Flying from Illinois to Denmark in June is currently the most expensive (average of $953). 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$378Average$625FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$438Average$715FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$488Average$687FlexibilityNo cancel feeOn-time76%
KLMCheapest$501Average$841FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$508Average$672FlexibilityNo cancel feeOn-time69%
SWISSCheapest$509Average$675FlexibilityNo cancel feeOn-time79%
Air CanadaCheapest$521Average$649FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$532Average$678FlexibilityNo cancel feeOn-time70%
FinnairCheapest$570Average$691FlexibilityNo cancel feeOn-time76%
DeltaCheapest$570Average$779FlexibilityNo cancel feeOn-timeN/A

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