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$217+ Cheap flights from Illinois to Copenhagen (CPH)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Jan 19 — Jan 261
Mon 1/19
Mon 1/26
1 adult, Economy
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Cheap flight deals from Illinois to Copenhagen

Cheapest flights from Illinois to Copenhagen
Explore the most affordable flight options available from Illinois to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 20, 2025.

This United Airlines deal was found by Cheapflights users on 12/20. 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.
Wed 12/242:30 pmORD - CPH
2 stops20h 35mUnited Airlines
Fri 12/266:55 amCPH - ORD
2 stops19h 22mUnited Airlines
Deal found 12/20$552
This Kiwi.com deal was found by Cheapflights users on 12/19. 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.
Sat 12/206:25 pmORD - CPH
1 stop12h 20mLufthansa
Thu 12/2510:10 amCPH - ORD
1 stop16h 55mLufthansa
Deal found 12/19$562
This Expedia deal was found by Cheapflights users on 12/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:10 pmORD - CPH
2 stops23h 15mMultiple Airlines
Tue 1/136:50 amCPH - ORD
1 stop15h 30mMultiple Airlines
Deal found 12/18$564
This KAYAK deal was found by Cheapflights users on 12/20. 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.
Thu 12/254:10 pmORD - CPH
1 stop23h 55mSWISS
Thu 1/82:55 pmCPH - ORD
2 stops30h 15mSWISS
Deal found 12/20$566
This Expedia deal was found by Cheapflights users on 12/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:10 pmORD - CPH
2 stops23h 15mMultiple Airlines
Sun 1/186:50 amCPH - ORD
2 stops15h 20mMultiple Airlines
Deal found 12/18$573
This Kiwi.com deal was found by Cheapflights users on 12/18. 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.
Thu 12/186:25 pmORD - CPH
1 stop12h 20mMultiple Airlines
Mon 12/222:55 pmCPH - ORD
1 stop28h 50mMultiple Airlines
Deal found 12/18$574
This KAYAK deal was found by Cheapflights users on 12/19. 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.
Wed 12/243:20 pmORD - CPH
1 stop19h 45mLufthansa
Fri 12/2610:10 amCPH - ORD
1 stop12h 10mLufthansa
Deal found 12/19$588
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Fri 12/195:55 pmORD - CPH
1 stop10h 30mUnited Airlines
Wed 12/241:05 pmCPH - ORD
1 stop14h 00mUnited Airlines
Deal found 12/19$591
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Thu 12/2512:09 pmORD - CPH
2 stops22h 21mUnited Airlines
Thu 1/812:30 pmCPH - ORD
2 stops29h 15mUnited Airlines
Deal found 12/20$592
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Thu 12/181:55 pmORD - CPH
2 stops15h 30mUnited Airlines
Mon 12/2210:10 amCPH - ORD
1 stop16h 55mUnited Airlines
Deal found 12/18$596
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Wed 12/243:10 pmSTL - CPH
2 stops14h 15mUnited Airlines
Fri 12/266:50 amCPH - STL
1 stop14h 05mUnited Airlines
Deal found 12/20$642
This Kiwi.com deal was found by Cheapflights users on 12/20. 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 12/236:35 pmSTL - CPH
2 stops31h 45mLufthansa
Fri 1/306:50 amCPH - STL
1 stop14h 05mLufthansa
Deal found 12/20$648

Find flight deals from Illinois to Copenhagen

Keep the following information in mind while searching for Illinois to Copenhagen flight deals. Data was last updated December 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$493
(Cheapflightsfares)

One-way from

$217
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$758

Good round-trip deal

$499 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 Kastrup Copenhagen
Search Deals
One-way flight from Illinois to Kastrup Copenhagen
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 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 Illinois to Kastrup Copenhagen.
Search Deals
Price to beat on a one-way flight from Illinois to Kastrup Copenhagen.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Copenhagen 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 December 20, 2025.
Use the filters below to find and compare flights from Illinois to Copenhagen that are best for you.

Fly from

Illinois

Fly to

Copenhagen

Route

Depart

Return

Price

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Wed 4/29

5:00 pm-11:00 am

1 stop11h 00m

Kastrup Copenhagen

Mon 5/11

9:45 pm-3:55 pm

1 stop25h 10m

$516

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 1/12

6:30 pm-11:45 am

1 stop10h 15m

Kastrup Copenhagen

Mon 1/19

8:50 pm-5:20 pm

1 stop27h 30m

$521

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 3/2

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Wed 4/8

1:55 pm-4:10 pm

Nonstop9h 15m

$527

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 2/2

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Mon 2/9

2:30 pm-4:45 pm

Nonstop9h 15m

$527

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 1/26

7:20 pm-10:25 am

Nonstop8h 05m

Kastrup Copenhagen

Thu 1/29

2:30 pm-4:55 pm

Nonstop9h 25m

$527

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 3/2

2:03 pm-1:10 pm

2 stops16h 07m

Kastrup Copenhagen

Wed 4/8

11:50 am-2:15 pm

1 stop33h 25m

$534

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 3/3

2:03 pm-1:10 pm

2 stops16h 07m

Kastrup Copenhagen

Thu 4/9

9:00 am-9:34 pm

1 stop19h 34m

$535

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 3/2

2:46 pm-1:10 pm

2 stops15h 24m

Kastrup Copenhagen

Fri 4/3

9:00 am-5:10 pm

1 stop15h 10m

$535

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Tue 4/14

1:30 pm-1:20 pm

2 stops16h 50m

Kastrup Copenhagen

Fri 5/1

9:00 am-5:48 pm

1 stop15h 48m

$535

ChicagoCopenhagen

ORD - CPH

ORDCPH

Chicago O'Hare Intl

Mon 4/13

5:10 pm-5:05 pm

1 stop16h 55m

Kastrup Copenhagen

Thu 4/30

6:00 am-2:15 pm

1 stop15h 15m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

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

Have a flexible travel schedule? Discover the best time to fly to Copenhagen 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 Copenhagen

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Copenhagen (average of $397). Flying from Illinois to Copenhagen in June is currently the most expensive (average of $651). 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 CPH?

Find hourly flight availability from Illinois to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 20, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Illinois to Copenhagen by exploring options for tickets in the evening.

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

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

Travelers seeking maximum savings on their Illinois to Copenhagen flight should consider departing on Saturday 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 Copenhagen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Copenhagen from Illinois?

    For a flight from Illinois to Copenhagen, you will be flying into Kastrup Copenhagen. Kastrup Copenhagen (CPH) is just 5.0 mi from the center of the city.

  • How long is the flight from Illinois to Copenhagen?

    For as low as $527, British Airways can have you in Copenhagen from Illinois in 8h 05m. Illinois and Copenhagen are separated by a distance of 4256 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $155 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Icelandair and SWISS, with prices starting from $200 and $271, respectively.

  • What are the most popular routes from Illinois to Copenhagen?

    While some choose either Chicago Midway - Kastrup Copenhagen or Lambert-St Louis - Kastrup Copenhagen, Chicago O'Hare Intl - Kastrup Copenhagen is the most popular route from Illinois to Copenhagen.

  • What are the most reliable airlines from Illinois to Copenhagen?

    Consider Air France (70%), Scandinavian Airlines (70%) or Delta (70%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Copenhagen.

  • What are the cheapest flights from Illinois to Copenhagen?

    Looking at all options, your cheapest flight can be booked for $361. While the most popular route (Chicago O'Hare Intl - Kastrup Copenhagen) can be booked for $410 on average, our data indicates $1,345 when flying from Illinois to Copenhagen.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Copenhagen (average of $397). Flying from Illinois to Copenhagen in June is currently the most expensive (average of $651). 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

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup

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Alternative routes for Illinois to Copenhagen

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 Copenhagen

Discover the top 10 airlines that operate flights from Illinois to Copenhagen. 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 December 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$421Average$606FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$454Average$787FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$489Average$766FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$496Average$831FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$508Average$690FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$540Average$683FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$541Average$705FlexibilityNo cancel feeOn-time67%
SWISSCheapest$548Average$792FlexibilityNo cancel feeOn-time79%
FinnairCheapest$580Average$746FlexibilityNo cancel feeOn-time76%
KLMCheapest$596Average$736FlexibilityNo cancel feeOn-time75%

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