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Denmark

$325+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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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 July 31, 2025.

Round-trip from

$510
(SWISS)

One-way from

$325
(oojo)

Popular in

June

Cheapest in

February

Average price

$764

Good round-trip deal

$479 or less

Good one-way deal

$384 or less
From Illinois to Denmark
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One-way flight from Illinois to Denmark
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Highest demand for flights based on searches. 19% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Illinois to Denmark.
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Price to beat on a one-way flight from Illinois to Denmark.
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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 July 31, 2025.

This SWISS deal was found by Cheapflights users on 7/31. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/102:20 pmORD - CPH
1 stop22h 00mSWISS
Thu 8/219:40 amCPH - ORD
1 stop13h 15mSWISS
Deal found 7/31$510
This Iberia deal was found by Cheapflights users on 7/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:10 pmORD - CPH
1 stop21h 40mMultiple Airlines
Tue 11/2510:30 amCPH - ORD
2 stops19h 22mMultiple Airlines
Deal found 7/31$511
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:37 amORD - CPH
1 stop20h 23mScandinavian Airlines
Wed 10/295:50 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
Deal found 7/30$513
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:05 pmORD - CPH
1 stop12h 10mUnited Airlines
Tue 8/196:05 amCPH - ORD
1 stop14h 55mUnited Airlines
Deal found 7/31$514
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:30 pmORD - CPH
1 stop10h 15mIcelandair
Sat 1/1012:55 pmCPH - ORD
1 stop11h 25mIcelandair
Deal found 7/30$515
This Air Canada deal was found by Cheapflights users on 7/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2010:40 amORD - CPH
2 stops15h 15mAir Canada
Mon 11/36:55 amCPH - ORD
2 stops15h 00mAir Canada
Deal found 7/30$519
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:50 pmORD - CPH
1 stop11h 25mAmerican Airlines
Thu 8/282:00 pmCPH - ORD
2 stops16h 25mAmerican Airlines
Deal found 7/29$521
This Ovago deal was found by Cheapflights users on 7/31. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/199:15 pmORD - CPH
1 stop18h 35mBritish Airways
Thu 10/301:05 pmCPH - ORD
1 stop31h 45mBritish Airways
Deal found 7/31$527
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:00 amORD - CPH
1 stop16h 30mDelta
Fri 8/229:00 amCPH - ORD
1 stop15h 37mDelta
Deal found 7/31$535
This FlightHub deal was found by Cheapflights users on 7/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:40 pmORD - BLL
1 stop18h 35mLufthansa
Tue 8/262:55 pmBLL - ORD
1 stop12h 00mLufthansa
Deal found 7/31$541
This KLM deal was found by Cheapflights users on 7/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/191:43 pmMDW - CPH
1 stop13h 22mKLM
Fri 8/2212:20 pmCPH - MDW
1 stop12h 17mKLM
Deal found 7/30$541
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:15 amMDW - CPH
1 stop17h 50mDelta
Fri 8/2912:20 pmCPH - MDW
1 stop30h 14mDelta
Deal found 7/29$566

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 July 31, 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

Sun 8/10

2:20 pm-7:20 pm

1 stop22h 00m

Kastrup Copenhagen

Thu 8/21

9:40 am-3:55 pm

1 stop13h 15m

$510

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 10/22

7:37 am-11:00 am

1 stop20h 23m

Kastrup Copenhagen

Wed 10/29

5:50 pm-9:05 pm

Nonstop9h 15m

$513

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 8/12

7:05 pm-2:15 pm

1 stop12h 10m

Kastrup Copenhagen

Tue 8/19

6:05 am-2:00 pm

1 stop14h 55m

$514

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 10/14

7:25 pm-9:45 pm

1 stop19h 20m

Kastrup Copenhagen

Mon 10/20

4:45 pm-6:15 pm

1 stop32h 30m

$517

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 10/20

10:40 am-8:55 am

2 stops15h 15m

Kastrup Copenhagen

Mon 11/3

6:55 am-2:55 pm

2 stops15h 00m

$519

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 8/18

4:50 pm-11:15 am

1 stop11h 25m

Kastrup Copenhagen

Thu 8/28

2:00 pm-11:25 pm

2 stops16h 25m

$521

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 8/26

8:40 am-7:10 am

1 stop15h 30m

Kastrup Copenhagen

Wed 9/3

6:10 am-2:55 pm

2 stops15h 45m

$522

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 10/19

9:15 pm-10:50 pm

1 stop18h 35m

Kastrup Copenhagen

Thu 10/30

1:05 pm-2:50 pm

1 stop31h 45m

$527

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Sun 8/3

9:40 pm-11:30 pm

1 stop18h 50m

Kastrup Copenhagen

Wed 8/20

12:20 pm-7:55 pm

1 stop14h 35m

$529

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 8/12

7:00 am-6:30 am

1 stop16h 30m

Kastrup Copenhagen

Fri 8/22

9:00 am-5:37 pm

1 stop15h 37m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 54 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 $912). 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 July 31, 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.

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 July 31, 2025.
See what other customers who have flown with Delta, KLM, and Air France from Illinois to Denmark have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $325. American Airlines flights start at $328 while deals on United Airlines start at $331 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 $912). 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$384Average$625FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$443Average$778FlexibilityNo cancel feeOn-time77%
FinnairCheapest$476Average$696FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$489Average$715FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$490Average$723FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$676FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$511Average$684FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$533Average$677FlexibilityNo cancel feeOn-time67%
SWISSCheapest$554Average$829FlexibilityNo cancel feeOn-time79%
DeltaCheapest$588Average$746FlexibilityNo cancel feeOn-timeN/A

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