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$390+ Cheap flights from Cologne (CGN) 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Cologne to Illinois

Cheapest flights from Cologne to Illinois
Explore the most affordable flight options available from Cologne to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 pmCGN - ORD
2 stops22h 50mMultiple Airlines
Sun 12/216:45 pmORD - CGN
2 stops15h 25mMultiple Airlines
Deal found 12/17$1,482
This Turkish Airlines deal was found by Cheapflights users on 12/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:15 pmCGN - ORD
1 stop31h 10mTurkish Airlines
Sun 1/411:50 amORD - CGN
1 stop15h 45mTurkish Airlines
Deal found 12/16$1,538
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/181:35 pmCGN - ORD
2 stops17h 00mUnited Airlines
Sun 12/215:50 pmORD - CGN
1 stop11h 20mUnited Airlines
Deal found 12/17$1,761
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/1811:35 amCGN - ORD
1 stop29h 30mTurkish Airlines
Sun 12/218:20 pmORD - CGN
1 stop37h 55mTurkish Airlines
Deal found 12/17$1,796
This lastminute.com deal was found by Cheapflights users on 12/16. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:00 pmCGN - ORD
1 stop12h 00mBritish Airways
Sun 1/44:46 pmORD - CGN
2 stops16h 44mBritish Airways
Deal found 12/16$2,653

Find flight deals from Cologne to Illinois

Keep the following information in mind while searching for Cologne to Illinois flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$577
(Kiwi.com)

One-way from

$390
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$761
Provider with most accurate pricing for Cologne Köln/Bonn-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Chicago (CHI) flights.
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From Cologne Köln/Bonn to Illinois
Search Deals
One-way flight from Cologne Köln/Bonn to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Cologne 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 December 18, 2025.
Use the filters below to find and compare flights from Cologne to Illinois that are best for you.

Fly from

Cologne

Fly to

Illinois

Route

Depart

Return

Price

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 1/15

1:35 pm-6:25 pm

1 stop11h 50m

Chicago O'Hare Intl

Mon 1/19

1:00 pm-10:00 pm

2 stops26h 00m

$577

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 1/31

1:15 pm-6:25 pm

1 stop12h 10m

Chicago O'Hare Intl

Sat 2/7

9:50 pm-5:10 pm

1 stop12h 20m

$590

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 1/15

1:35 pm-6:25 pm

1 stop11h 50m

Chicago O'Hare Intl

Mon 1/19

4:10 pm-12:50 pm

2 stops13h 40m

$594

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 1/31

9:10 am-6:25 pm

1 stop16h 15m

Chicago O'Hare Intl

Sat 2/7

8:52 am-12:30 pm

2 stops20h 38m

$607

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 1/15

8:40 am-8:10 pm

2 stops18h 30m

Chicago O'Hare Intl

Mon 1/19

3:35 pm-12:10 pm

2 stops13h 35m

$623

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 1/22

8:40 am-5:48 pm

2 stops16h 08m

Chicago O'Hare Intl

Sun 1/25

3:55 pm-12:10 pm

2 stops13h 15m

$633

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 5/23

1:05 pm-6:15 pm

1 stop12h 10m

Chicago O'Hare Intl

Fri 6/5

9:55 am-11:10 am

2 stops18h 15m

$659

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 1/15

6:45 am-4:20 pm

1 stop16h 35m

Chicago O'Hare Intl

Mon 1/19

3:35 pm-12:10 pm

2 stops13h 35m

$759

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Thu 1/22

5:05 pm-10:59 pm

2 stops36h 54m

Lambert-St Louis

Mon 1/26

3:37 pm-4:10 pm

2 stops17h 33m

$826

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sat 2/14

5:10 pm-5:05 pm

2 stops30h 55m

Lambert-St Louis

Thu 2/19

6:55 pm-6:55 pm

2 stops17h 00m

$828

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 22 results
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Best time to book a flight from Cologne to Illinois

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

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

Currently, February is the cheapest month in which you can book a flight from Cologne to Illinois (average of $344). Flying from Cologne to Illinois in December is currently the most expensive (average of $550). 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.

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

Related info for your journey

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

    Cologne Köln/Bonn (CGN), located 9.5 mi from the city center, is the airport you fly out of when you book flights from Cologne to Illinois.

  • How long is the flight from Cologne to Illinois?

    There are many flights that can get you from Cologne to Illinois in 12h 10m. Fly via Lufthansa, United Airlines, or British Airways to get the fastest option. The distance from Cologne to Illinois is about 4244 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Cologne to Illinois (average of $344). Flying from Cologne to Illinois in December is currently the most expensive (average of $550). 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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