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$326+ Cheap flights from Denmark to Illinois

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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ORD
ene. 14 — ene. 211
mié. 1/14
mié. 1/21
1 adult, Economy
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Cheap flight deals from Denmark to Illinois

Cheapest flights from Denmark to Illinois
Explore the most affordable flight options available from Denmark to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 15, 2025.

This ResecentrumGruppen deal was found by Cheapflights users on 12/14. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/241:05 pmCPH - ORD
1 stop14h 00mMultiple Airlines
mié. 12/316:50 pmORD - CPH
1 stop12h 15mMultiple Airlines
Deal found 12/14$615
This United Airlines deal was found by Cheapflights users on 12/13. 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.
mié. 12/241:05 pmCPH - ORD
1 stop14h 00mUnited Airlines
mar. 12/302:30 pmORD - CPH
2 stops16h 40mUnited Airlines
Deal found 12/13$651
This United Airlines deal was found by Cheapflights users on 12/14. 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.
mié. 12/241:05 pmCPH - ORD
1 stop14h 00mUnited Airlines
mié. 12/316:21 pmORD - CPH
2 stops16h 14mUnited Airlines
Deal found 12/14$655
This United Airlines deal was found by Cheapflights users on 12/13. 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.
mié. 12/241:05 pmCPH - ORD
1 stop14h 00mUnited Airlines
jue. 1/110:35 pmORD - CPH
1 stop12h 45mUnited Airlines
Deal found 12/13$656
This United Airlines deal was found by Cheapflights users on 12/14. 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.
jue. 12/2510:10 amCPH - ORD
2 stops35h 10mUnited Airlines
mié. 12/314:10 pmORD - CPH
1 stop14h 55mUnited Airlines
Deal found 12/14$657
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
jue. 12/256:50 amCPH - ORD
1 stop12h 55mMultiple Airlines
mié. 12/314:20 pmORD - CPH
1 stop12h 25mMultiple Airlines
Deal found 12/14$658
This United Airlines deal was found by Cheapflights users on 12/14. 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.
jue. 12/2512:30 pmCPH - ORD
2 stops32h 50mUnited Airlines
mar. 12/308:51 amORD - CPH
2 stops19h 34mUnited Airlines
Deal found 12/14$665
This Delta deal was found by Cheapflights users on 12/13. 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.
mié. 12/246:00 amCPH - MDW
2 stops23h 22mDelta
mié. 12/316:08 pmMDW - CPH
2 stops15h 52mDelta
Deal found 12/13$767
This Delta deal was found by Cheapflights users on 12/14. 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.
mié. 12/249:55 amCPH - MDW
2 stops19h 27mDelta
lun. 12/299:29 amMDW - CPH
2 stops16h 31mDelta
Deal found 12/14$771
This Delta deal was found by Cheapflights users on 12/14. 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.
mié. 12/246:00 amCPH - MDW
2 stops18h 26mDelta
mar. 12/309:50 amMDW - CPH
2 stops16h 10mDelta
Deal found 12/14$773
This Delta deal was found by Cheapflights users on 12/14. 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.
mar. 12/239:55 amCPH - MDW
2 stops29h 54mDelta
lun. 12/299:29 amMDW - CPH
2 stops16h 31mDelta
Deal found 12/14$783
This Delta deal was found by Cheapflights users on 12/14. 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.
mar. 12/239:55 amCPH - MDW
2 stops29h 54mDelta
jue. 1/19:50 amMDW - CPH
2 stops16h 10mDelta
Deal found 12/14$784

Find flight deals from Denmark to Illinois

Keep the following information in mind while searching for Denmark to Illinois flight deals. Data was last updated diciembre 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$478
(Cheapflightsfares)

One-way from

$326
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$653

Good round-trip deal

$536 or less

Good one-way deal

$767 or less
Provider with most accurate pricing for Kastrup Copenhagen-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kastrup Copenhagen-Chicago (CHI) flights.
Search Deals
From Denmark to Illinois
Search Deals
One-way flight from Denmark to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Denmark to Illinois.
Search Deals
Price to beat on a one-way flight from Denmark to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denmark to Illinois 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 diciembre 15, 2025.
Use the filters below to find and compare flights from Denmark to Illinois that are best for you.

Fly from

Denmark

Fly to

Illinois

Route

Depart

Return

Price

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

jue. 1/22

2:30 pm-4:45 pm

Nonstop9h 15m

Chicago O'Hare Intl

mié. 2/4

7:20 pm-10:25 am

Nonstop8h 05m

$479

BillundChicago

BLL - ORD

BLLORD

Billund

jue. 1/15

1:00 pm-1:50 pm

1 stop31h 50m

Chicago O'Hare Intl

lun. 1/19

5:10 pm-12:20 pm

1 stop12h 10m

$485

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

jue. 2/26

6:15 am-5:20 pm

1 stop18h 05m

Chicago O'Hare Intl

mié. 4/29

7:25 pm-12:55 pm

1 stop10h 30m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

dom. 3/1

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

lun. 4/27

7:25 pm-9:45 pm

1 stop19h 20m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

vie. 2/27

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

lun. 4/27

7:25 pm-4:15 pm

1 stop13h 50m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

sáb. 2/28

1:25 pm-5:20 pm

1 stop10h 55m

Chicago O'Hare Intl

lun. 4/27

7:25 pm-4:15 pm

1 stop13h 50m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

sáb. 2/28

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

mar. 4/28

7:25 pm-4:15 pm

1 stop13h 50m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

dom. 3/1

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

mar. 4/28

7:25 pm-4:15 pm

1 stop13h 50m

$490

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

jue. 2/26

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

lun. 4/27

7:25 pm-12:55 pm

1 stop10h 30m

$490

BillundChicago

BLL - ORD

BLLORD

Billund

mié. 1/14

1:20 pm-6:45 pm

1 stop12h 25m

Chicago O'Hare Intl

lun. 1/19

5:10 pm-12:20 pm

1 stop12h 10m

$504

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 55 results
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Best time to book a flight from Denmark to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Denmark 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 Denmark to Illinois

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

Currently, January is the cheapest month in which you can book a flight from Denmark to Illinois (average of $378). Flying from Denmark to Illinois in July is currently the most expensive (average of $543). 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 DK to IL?

Find hourly flight availability from Denmark to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 15, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 44% on flights from Denmark to Illinois by exploring options for tickets in the evening.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated diciembre 15, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and United Airlines from Denmark to Illinois 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
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Scandinavian Airlines
7.4
Good
1,606 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,092 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,051 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,628 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Denmark to Illinois. 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 Denmark to Illinois?

    Departing from Denmark to Illinois will take you 9h 15m. There are 4256 mi between Denmark and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from Denmark to Illinois are American Airlines ($338), British Airways ($345), and Icelandair ($356).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denmark to Illinois 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 Denmark to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Denmark to Illinois (average of $378). Flying from Denmark to Illinois in July is currently the most expensive (average of $543). 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 Denmark to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Denmark to Illinois

Discover the top 3 airlines that operate flights from Denmark to Illinois. 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 diciembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$460Average$662FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$530Average$755FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$533Average$809FlexibilityNo cancel feeOn-time77%

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