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$486+ Cheap flights from Copenhagen (CPH) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$486
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$657

Good round-trip deal

$851 or less

Good one-way deal

$744 or less
From Kastrup Copenhagen to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($111 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 June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 11/2510:30 amCPH - STL
2 stops16h 30mAmerican Airlines
Fri 1/911:58 amSTL - CPH
2 stops16h 27mAmerican Airlines
Deal found 6/11$486
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 6/269:00 amCPH - STL
2 stops18h 40mDelta
Sat 7/56:40 amSTL - CPH
2 stops16h 50mDelta
Deal found 6/12$488
This ResecentrumGruppen deal was found by Cheapflights users on 6/10. 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.
Wed 11/266:45 amCPH - STL
1 stop14h 10mLufthansa
Tue 12/91:27 pmSTL - CPH
2 stops16h 08mLufthansa
Deal found 6/10$492
This Flightsearch deal was found by Cheapflights users on 6/10. 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.
Wed 11/266:45 amCPH - STL
1 stop14h 10mMultiple Airlines
Thu 12/114:15 pmSTL - CPH
2 stops14h 45mMultiple Airlines
Deal found 6/10$494
This ResecentrumGruppen deal was found by Cheapflights users on 6/10. 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.
Fri 9/269:00 amCPH - STL
1 stop14h 00mAir France
Sat 10/115:40 pmSTL - CPH
2 stops16h 10mAir France
Deal found 6/10$498
This Finnair deal was found by Cheapflights users on 6/10. 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.
Fri 9/267:25 pmCPH - STL
2 stops30h 02mFinnair
Mon 10/131:54 pmSTL - CPH
2 stops20h 01mFinnair
Deal found 6/10$506
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 6/182:00 pmCPH - ORD
1 stop33h 55mAmerican Airlines
Sun 6/229:36 pmORD - CPH
1 stop30h 39mAmerican Airlines
Deal found 6/11$506
This British Airways deal was found by Cheapflights users on 6/11. 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.
Wed 8/68:00 pmCPH - ORD
1 stop22h 55mBritish Airways
Thu 8/145:00 pmORD - CPH
1 stop23h 30mBritish Airways
Deal found 6/11$518
This United Airlines deal was found by Cheapflights users on 6/11. 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 11/266:45 amCPH - STL
2 stops15h 41mUnited Airlines
Wed 12/313:15 pmSTL - CPH
2 stops15h 45mUnited Airlines
Deal found 6/11$520
This British Airways deal was found by Cheapflights users on 6/10. 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.
Thu 9/257:05 amCPH - STL
2 stops20h 20mBritish Airways
Sat 10/111:22 pmSTL - CPH
2 stops16h 13mBritish Airways
Deal found 6/10$524
This Gotogate deal was found by Cheapflights users on 6/11. 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.
Wed 10/156:10 amCPH - ORD
2 stops15h 45mAir Canada
Tue 10/2110:40 amORD - CPH
2 stops15h 15mAir Canada
Deal found 6/11$527
This Finnair deal was found by Cheapflights users on 6/10. 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.
Thu 8/215:00 pmCPH - ORD
2 stops28h 40mFinnair
Tue 8/265:40 pmORD - CPH
2 stops15h 35mFinnair
Deal found 6/10$530

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 June 12, 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

Tue 11/25

10:30 am-8:00 pm

2 stops16h 30m

Lambert-St Louis

Fri 1/9

11:58 am-11:25 am

2 stops16h 27m

$486

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Thu 6/26

9:00 am-8:40 pm

2 stops18h 40m

Lambert-St Louis

Sat 7/5

6:40 am-6:30 am

2 stops16h 50m

$488

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 11/26

6:45 am-1:55 pm

1 stop14h 10m

Lambert-St Louis

Tue 12/9

1:27 pm-12:35 pm

2 stops16h 08m

$492

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 11/26

6:45 am-1:55 pm

1 stop14h 10m

Lambert-St Louis

Thu 12/11

4:15 pm-2:00 pm

2 stops14h 45m

$494

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Fri 9/26

9:00 am-4:00 pm

1 stop14h 00m

Lambert-St Louis

Sat 10/11

5:40 pm-4:50 pm

2 stops16h 10m

$498

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Fri 9/26

7:25 pm-6:27 pm

2 stops30h 02m

Lambert-St Louis

Mon 10/13

1:54 pm-4:55 pm

2 stops20h 01m

$506

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

Wed 8/6

8:00 pm-11:55 am

1 stop22h 55m

Chicago O'Hare Intl

Thu 8/14

5:00 pm-11:30 pm

1 stop23h 30m

$518

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 11/26

6:45 am-3:26 pm

2 stops15h 41m

Lambert-St Louis

Wed 12/31

3:15 pm-2:00 pm

2 stops15h 45m

$520

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Thu 9/25

7:05 am-8:25 pm

2 stops20h 20m

Lambert-St Louis

Sat 10/11

1:22 pm-12:35 pm

2 stops16h 13m

$524

CopenhagenChicago

CPH - ORD

CPHORD

Kastrup Copenhagen

Wed 10/15

6:10 am-2:55 pm

2 stops15h 45m

Chicago O'Hare Intl

Tue 10/21

10:40 am-8:55 am

2 stops15h 15m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 47 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 June 12, 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and LOT from Copenhagen to Illinois by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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!
LOT
7.6
Good
1,077 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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 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 Icelandair ($537), LOT ($545), and British Airways ($550).

  • 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 Emirates (76%), Delta (63%) or Scandinavian Airlines (63%) 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 $614. On average you can expect to pay $1,252. The most popular route, (Kastrup Copenhagen - Chicago O'Hare Intl), can usually be booked for $462.

  • 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.

See more FAQs

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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 5 airlines flying from Copenhagen to Illinois

Discover the top 5 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$352Average$449FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$406Average$526FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$460Average$712FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$484Average$659FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$502Average$728FlexibilityNo cancel feeOn-time77%

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