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$504+ Cheap flights from Copenhagen (CPH) 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ORD
aug 6 — aug 131
ons 8/6
ons 8/13
1 adult, Economy
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Cheap flight deals from Copenhagen to Illinois

Keep the following information in mind while searching for Copenhagen to Illinois flight deals. Data was last updated augusti 1, 2025.

Round-trip from

$509
(American Airlines)

One-way from

$504
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$643

Good round-trip deal

$605 or less

Good one-way deal

$724 or less
From Kastrup Copenhagen to Illinois
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One-way flight from Kastrup Copenhagen to Illinois
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Highest demand for flights based on searches. 16% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Kastrup Copenhagen to Illinois.
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Price to beat on a one-way flight from Kastrup Copenhagen to Illinois.
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Find flight deals from Copenhagen to Illinois

Cheapest flights from Copenhagen to Illinois
Explore the most affordable flight options available from Copenhagen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on augusti 1, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tors 12/46:45 amCPH - STL
2 stops22h 37mAmerican Airlines
mån 12/84:08 pmSTL - CPH
2 stops15h 42mAmerican Airlines
Deal found 7/30$509
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons 10/112:30 pmCPH - STL
1 stop27h 07mDelta
ons 10/86:00 pmSTL - CPH
2 stops16h 05mDelta
Deal found 7/30$511
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tors 8/216:50 amCPH - ORD
2 stops17h 47mAir Canada
tis 8/268:40 amORD - CPH
1 stop15h 30mAir Canada
Deal found 7/31$517
This Ticket 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lör 8/301:55 pmCPH - ORD
Nonstop9h 15mScandinavian Airlines
sön 9/147:15 pmORD - CPH
Nonstop8h 30mScandinavian Airlines
Deal found 7/31$518
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lör 8/92:00 pmCPH - ORD
1 stop13h 11mAmerican Airlines
lör 8/309:30 pmORD - CPH
1 stop14h 10mAmerican Airlines
Deal found 7/30$521
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre 9/199:00 amCPH - MDW
2 stops19h 36mDelta
lör 9/271:43 pmMDW - CPH
1 stop13h 12mDelta
Deal found 7/30$525
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tors 12/46:50 pmCPH - STL
1 stop26h 05mLufthansa
mån 12/86:42 pmSTL - CPH
2 stops21h 13mLufthansa
Deal found 7/29$526
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sön 12/216:50 amCPH - ORD
1 stop20h 15mUnited Airlines
tors 1/86:50 pmORD - CPH
1 stop12h 10mUnited Airlines
Deal found 7/30$526
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.
lör 12/612:55 pmCPH - ORD
1 stop11h 25mIcelandair
lör 12/206:30 pmORD - CPH
1 stop19h 05mIcelandair
Deal found 7/30$533
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sön 8/176:05 amCPH - ORD
1 stop15h 50mLufthansa
sön 8/246:25 pmORD - CPH
1 stop20h 50mLufthansa
Deal found 7/31$539
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons 12/246:45 amCPH - ORD
1 stop13h 25mMultiple Airlines
lör 1/36:50 pmORD - CPH
1 stop21h 15mMultiple Airlines
Deal found 7/31$553
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.
ons 12/179:50 amCPH - ORD
1 stop13h 30mSWISS
lör 1/36:50 pmORD - CPH
1 stop31h 10mSWISS
Deal found 7/31$569

Cheapflights Fare Finder

 
Customize your flight search to find flights from Copenhagen 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 augusti 1, 2025.
Use the filters below to find and compare flights from Copenhagen to Illinois that are best for you.

Fly from

Copenhagen

Fly to

Illinois

Route

Depart

Return

Price

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

tors 12/4

6:45 am-10:22 pm

2 stops22h 37m

Lambert-St Louis

mån 12/8

4:08 pm-2:50 pm

2 stops15h 42m

$509

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

ons 10/1

12:30 pm-8:37 am

1 stop27h 07m

Lambert-St Louis

ons 10/8

6:00 pm-5:05 pm

2 stops16h 05m

$511

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

tors 8/21

6:50 am-5:37 pm

2 stops17h 47m

Chicago O'Hare Intl

tis 8/26

8:40 am-7:10 am

1 stop15h 30m

$517

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

lör 8/30

1:55 pm-4:10 pm

Nonstop9h 15m

Chicago O'Hare Intl

sön 9/14

7:15 pm-10:45 am

Nonstop8h 30m

$518

CopenhagenChicago

CPH - MDW

CPHMDW

Kastrup Copenhagen

fre 9/19

9:00 am-9:36 pm

2 stops19h 36m

Chicago Midway

lör 9/27

1:43 pm-9:55 am

1 stop13h 12m

$525

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

tors 12/4

6:50 pm-1:55 pm

1 stop26h 05m

Lambert-St Louis

mån 12/8

6:42 pm-10:55 pm

2 stops21h 13m

$526

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

sön 12/21

6:50 am-8:05 pm

1 stop20h 15m

Chicago O'Hare Intl

tors 1/8

6:50 pm-2:00 pm

1 stop12h 10m

$526

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

lör 12/6

12:55 pm-5:20 pm

1 stop11h 25m

Chicago O'Hare Intl

lör 12/20

6:30 pm-8:35 pm

1 stop19h 05m

$533

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

sön 8/17

6:05 am-2:55 pm

1 stop15h 50m

Chicago O'Hare Intl

sön 8/24

6:25 pm-10:15 pm

1 stop20h 50m

$539

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

ons 12/24

6:45 am-1:10 pm

1 stop13h 25m

Chicago O'Hare Intl

lör 1/3

6:50 pm-11:05 pm

1 stop21h 15m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 32 results
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Best time to book a flight from Copenhagen to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Copenhagen to Illinois (average of $245). Flying from Copenhagen to Illinois in March is currently the most expensive (average of $321). 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 CPH to IL?

Find hourly flight availability from Copenhagen 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 augusti 1, 2025.

When flying from Copenhagen to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Copenhagen to Illinois?

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 augusti 1, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and LOT from Copenhagen to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
LOT
7.6
Good
1,105 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

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

    Kastrup Copenhagen (CPH) is the airport you will fly out of if you book a flight from Copenhagen to Illinois. It is only a 5.0 mi journey to Kastrup Copenhagen (CPH) from Copenhagen’s city center.

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

    The cheapest airlines for a one-way flight from Copenhagen to Illinois are Lufthansa ($517), Brussels Airlines ($548), and LOT ($569).

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

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

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

    No one likes to see their flight delayed. When booking a flight from Copenhagen to Illinois consider choosing Scandinavian Airlines (81%), Delta (81%) or Emirates (69%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Copenhagen to Illinois?

    The cheapest flight price from Copenhagen to Illinois is $570. On average you can expect to pay $711. The most popular route, (Kastrup Copenhagen - Chicago O'Hare Intl), can usually be booked for $467.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Copenhagen to Illinois (average of $245). Flying from Copenhagen to Illinois in March is currently the most expensive (average of $321). 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.

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Alternative routes for Copenhagen 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 Copenhagen to Illinois

Discover the top 3 airlines that operate flights from Copenhagen 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 augusti 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$352Average$470FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$460Average$662FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$515Average$828FlexibilityNo cancel feeOn-time77%

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