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Cologne

$296+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This oojo deal was found by Cheapflights users on 1/28. 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.
Tue 3/38:45 pm
ORD
-
CGN
2 stops36h 25m
British Airways
Tue 3/175:05 pm
CGN
-
ORD
2 stops29h 09m
British Airways
Deal found 1/28$559
This Cheapflightsfares deal was found by Cheapflights users on 1/26. 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.
Tue 2/2411:39 am
STL
-
CGN
2 stops17h 56m
Lufthansa
Sun 3/11:15 pm
CGN
-
STL
2 stops16h 44m
Lufthansa
Deal found 1/26$561
This oojo deal was found by Cheapflights users on 1/27. 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.
Tue 2/244:13 pm
STL
-
CGN
2 stops17h 17m
British Airways
Sun 3/14:35 pm
CGN
-
STL
2 stops38h 13m
British Airways
Deal found 1/27$574
This oojo deal was found by Cheapflights users on 1/28. 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.
Tue 3/39:45 pm
ORD
-
CGN
1 stop11h 45m
British Airways
Tue 3/105:05 pm
CGN
-
ORD
1 stop32h 40m
British Airways
Deal found 1/28$574
This Justfly.com deal was found by Cheapflights users on 1/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:20 pm
ORD
-
CGN
1 stop37h 55m
Turkish Airlines
Tue 3/1711:35 am
CGN
-
ORD
1 stop37h 50m
Turkish Airlines
Deal found 1/26$604
This Justfly.com deal was found by Cheapflights users on 1/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:50 am
ORD
-
CGN
1 stop22h 25m
Turkish Airlines
Tue 3/1011:35 am
CGN
-
ORD
1 stop29h 30m
Turkish Airlines
Deal found 1/27$606
This Justfly.com deal was found by Cheapflights users on 1/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/511:50 am
ORD
-
CGN
1 stop15h 45m
Turkish Airlines
Wed 2/1811:35 am
CGN
-
ORD
1 stop29h 30m
Turkish Airlines
Deal found 1/27$610
This British Airways deal was found by Cheapflights users on 1/27. 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 2/259:45 pm
ORD
-
CGN
1 stop11h 25m
British Airways
Sun 3/14:35 pm
CGN
-
ORD
1 stop28h 15m
British Airways
Deal found 1/27$627
This Flightnetwork deal was found by Cheapflights users on 1/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/284:05 pm
STL
-
CGN
2 stops47h 20m
Multiple Airlines
Sat 3/75:55 pm
CGN
-
STL
2 stops27h 00m
Multiple Airlines
Deal found 1/27$652
This oojo deal was found by Cheapflights users on 1/25. 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.
Mon 3/308:10 pm
ORD
-
CGN
1 stop15h 00m
Turkish Airlines
Mon 4/67:10 pm
CGN
-
ORD
1 stop21h 30m
Turkish Airlines
Deal found 1/25$653
This oojo deal was found by Cheapflights users on 1/26. 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.
Wed 3/1812:50 pm
ORD
-
CGN
1 stop22h 25m
Turkish Airlines
Sun 3/226:15 pm
CGN
-
ORD
1 stop22h 50m
Turkish Airlines
Deal found 1/26$672
This oojo deal was found by Cheapflights users on 1/27. 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.
Thu 3/52:00 pm
STL
-
CGN
2 stops18h 40m
British Airways
Mon 3/165:15 pm
CGN
-
STL
2 stops35h 47m
British Airways
Deal found 1/27$692

Find flight deals from Illinois to Cologne

Keep the following information in mind while searching for Illinois to Cologne flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$559
(oojo)

One-way from

$296
(Kiwi.com)

Popular in

November

Cheapest in

February
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. 37% potential increase in price ($608 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 29% potential price decrease ($231 potential savings vs. average RT price).
Search Deals

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 January 28, 2026.
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

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

2:04 pm-4:30 pm

2 stops19h 26m

Cologne Köln/Bonn

Tue 3/10

5:05 pm-4:14 pm

2 stops29h 09m

$559

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

8:45 pm-4:10 pm

2 stops36h 25m

Cologne Köln/Bonn

Tue 3/17

5:05 pm-4:14 pm

2 stops29h 09m

$559

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

11:39 am-12:35 pm

2 stops17h 56m

Cologne Köln/Bonn

Sun 3/1

1:15 pm-10:59 pm

2 stops16h 44m

$561

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

4:13 pm-4:30 pm

2 stops17h 17m

Cologne Köln/Bonn

Sun 3/1

4:35 pm-11:48 pm

2 stops38h 13m

$574

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

11:50 am-10:35 am

1 stop15h 45m

Cologne Köln/Bonn

Tue 3/10

11:35 am-7:25 pm

1 stop37h 50m

$604

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

8:20 pm-5:15 pm

1 stop37h 55m

Cologne Köln/Bonn

Tue 3/17

11:35 am-7:25 pm

1 stop37h 50m

$604

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 2/25

9:45 pm-4:10 pm

1 stop11h 25m

Cologne Köln/Bonn

Sun 3/1

4:35 pm-1:50 pm

1 stop28h 15m

$627

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Sat 2/28

4:05 pm-10:25 pm

2 stops47h 20m

Cologne Köln/Bonn

Sat 3/7

5:55 pm-1:55 pm

2 stops27h 00m

$652

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 3/5

2:00 pm-3:40 pm

2 stops18h 40m

Cologne Köln/Bonn

Mon 3/16

5:15 pm-11:02 pm

2 stops35h 47m

$692

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 3/12

7:41 am-5:15 pm

2 stops27h 34m

Cologne Köln/Bonn

Thu 3/19

1:35 pm-10:59 pm

2 stops15h 24m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 21 results
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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, March is the cheapest month in which you can book a flight from Illinois to Cologne (average of $455). 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.

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 15h 45m. The time it takes to get you to your destination can typically vary by up to 3h 41m. 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, March is the cheapest month in which you can book a flight from Illinois to Cologne (average of $455). 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

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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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$584Average$779FlexibilityNo cancel feeOn-time70%

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