HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cologne

$304+ Cheap flights from Illinois to Cologne (CGN)

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Cologne with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Cologne

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$552
(AirNGo)

One-way from

$349
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$1,525
Provider with most accurate pricing for Chicago (CHI)-Cologne Köln/Bonn flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Cologne Köln/Bonn flights.
Search Deals
From Illinois to Cologne Köln/Bonn
Search Deals
One-way flight from Illinois to Cologne Köln/Bonn
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Illinois to Cologne

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

This oojo deal was found by Cheapflights users on 11/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:50 amORD - CGN
1 stop15h 45mTurkish Airlines
Fri 12/126:15 pmCGN - ORD
1 stop22h 50mTurkish Airlines
Deal found 11/19$863
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:30 pmORD - CGN
2 stops16h 40mMultiple Airlines
Thu 12/1112:55 amCGN - ORD
3 stops26h 05mMultiple Airlines
Deal found 11/19$898
This Cheapflightsfares deal was found by Cheapflights users on 11/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:20 pmORD - CGN
1 stop11h 15mMultiple Airlines
Sat 1/109:10 amCGN - ORD
1 stop12h 00mMultiple Airlines
Deal found 11/18$1,213
This Ovago deal was found by Cheapflights users on 11/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:46 pmSTL - CGN
2 stops34h 24mBritish Airways
Mon 12/85:15 pmCGN - STL
2 stops30h 35mBritish Airways
Deal found 11/19$1,240
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:40 pmORD - CGN
2 stops19h 55mMultiple Airlines
Tue 12/307:20 pmCGN - ORD
2 stops26h 40mMultiple Airlines
Deal found 11/19$1,392
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:20 amORD - CGN
3 stops27h 30mMultiple Airlines
Sat 12/277:50 pmCGN - ORD
2 stops25h 55mMultiple Airlines
Deal found 11/20$1,447
This Air Canada deal was found by Cheapflights users on 11/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:05 pmSTL - CGN
2 stops23h 20mAir Canada
Mon 12/88:40 amCGN - STL
3 stops20h 00mAir Canada
Deal found 11/18$1,727

Cheapflights Fare Finder

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

Fly from

Illinois

Fly to

Cologne

Route

Depart

Return

Price

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 2/6

4:05 pm-12:10 pm

2 stops13h 05m

Cologne Köln/Bonn

Fri 2/13

9:10 am-8:23 pm

2 stops18h 13m

$572

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 1/12

9:45 pm-4:10 pm

1 stop11h 25m

Cologne Köln/Bonn

Mon 1/26

5:15 pm-5:47 pm

2 stops31h 32m

$581

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 2/19

1:11 pm-6:55 pm

2 stops22h 44m

Cologne Köln/Bonn

Mon 2/23

1:20 pm-10:00 pm

2 stops15h 40m

$584

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 2/20

11:39 am-12:30 pm

2 stops17h 51m

Cologne Köln/Bonn

Sun 2/22

1:40 pm-3:29 pm

2 stops56h 49m

$589

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

4:05 pm-10:25 pm

2 stops23h 20m

Cologne Köln/Bonn

Wed 3/4

8:40 am-9:00 pm

3 stops19h 20m

$592

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

11:39 am-12:35 pm

2 stops17h 56m

Cologne Köln/Bonn

Wed 3/4

1:20 pm-10:00 pm

2 stops15h 40m

$598

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 2/6

8:20 pm-10:35 am

1 stop31h 15m

Cologne Köln/Bonn

Fri 2/13

6:15 pm-6:25 pm

1 stop31h 10m

$612

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 2/18

9:45 pm-4:10 pm

1 stop11h 25m

Cologne Köln/Bonn

Fri 2/27

4:35 pm-6:45 pm

1 stop33h 10m

$616

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

1:11 pm-12:35 pm

2 stops16h 24m

Cologne Köln/Bonn

Sun 3/1

9:10 am-10:00 pm

2 stops19h 50m

$624

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 2/6

8:20 pm-5:15 pm

1 stop37h 55m

Cologne Köln/Bonn

Sun 2/15

11:35 am-10:05 am

1 stop29h 30m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 25 results
1
2
3

Best time to book a flight from Illinois to Cologne

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

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

Currently, April is the cheapest month in which you can book a flight from Illinois to Cologne (average of $203). Flying from Illinois to Cologne in June is currently the most expensive (average of $738). 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 CGN?

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

When flying from Illinois to Cologne, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 46% versus a flight in the afternoon.

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

Related info for your journey

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

    Located just 9.5 mi from the city center, Cologne Köln/Bonn (CGN) is the airport most travelers will use when flying to Cologne from Illinois.

  • How long is the flight from Illinois to Cologne?

    Airlines like British Airways, Lufthansa, and Turkish Airlines fly from Illinois to Cologne in about 11h 25m. The time it takes to get you to your destination can typically vary by up to 19h 50m. The distance between Illinois and Cologne is about 4244 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Illinois to Cologne (average of $203). Flying from Illinois to Cologne in June is currently the most expensive (average of $738). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Cologne

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Frankfurt flights
John F Kennedy Intl to Frankfurt flights
Dallas/Fort Worth to Frankfurt flights
Dulles Intl to Frankfurt flights
Newark to Berlin flights
John F Kennedy Intl to Munich flights
Newark to Munich flights
Los Angeles to Frankfurt flights
LaGuardia to Frankfurt flights
John F Kennedy Intl to Berlin flights
Boston to Frankfurt flights
O'Hare Intl to Frankfurt flights
San Francisco to Frankfurt flights
Dulles Intl to Munich flights
Atlanta to Frankfurt flights
Boston to Munich flights
O'Hare Intl to Munich flights
Detroit to Frankfurt flights
Seattle to Frankfurt flights
Denver to Frankfurt flights
Miami to Frankfurt flights
Baltimore to Frankfurt flights
Hobby to Frankfurt flights
Reagan-National to Frankfurt flights
LaGuardia to Munich flights
Charlotte to Munich flights
San Francisco to Munich flights
George Bush Intcntl to Frankfurt flights
LaGuardia to Berlin flights
Love Field to Frankfurt flights
Los Angeles to Munich flights
Tampa to Frankfurt flights
Denver to Munich flights
Orlando to Frankfurt flights
Charlotte to Frankfurt flights
Miami to Munich flights
Dulles Intl to Berlin flights
Philadelphia to Frankfurt flights
Ontario to Frankfurt flights
Baltimore to Munich flights
Reagan-National to Munich flights
Dallas/Fort Worth to Munich flights
Los Angeles to Berlin flights
Baltimore to Berlin flights
San Diego to Frankfurt flights
Atlanta to Munich flights
Reagan-National to Berlin flights
San Francisco to Berlin flights
Sky Harbor Intl to Frankfurt flights
Raleigh to Frankfurt flights

Top airline flying from Illinois to Cologne

Discover the top airline that operate flights from Illinois to Cologne. 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$739FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.