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Cologne

$232+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
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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 January 18, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$493
(AirNGo)

One-way from

$232
(AirNGo)

Popular in

November

Cheapest in

February
Provider with most accurate pricing for Chicago (CHI)-Cologne Köln/Bonn flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Cologne Köln/Bonn flights.
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From Illinois to Cologne Köln/Bonn
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One-way flight from Illinois to Cologne Köln/Bonn
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Highest demand for flights based on searches. 37% potential increase in price ($608 potential increase over avg. RT price).
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Cheapest flight prices on average. 29% potential price decrease ($231 potential savings vs. average RT price).
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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 January 18, 2026.

This AirNGo deal was found by Cheapflights users on 1/18. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/225:10 pm
ORD
-
CGN
1 stop16h 20m
British Airways
Tue 3/105:05 pm
CGN
-
ORD
1 stop32h 40m
British Airways
Deal found 1/18$493
This AirNGo deal was found by Cheapflights users on 1/18. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/174:10 pm
ORD
-
CGN
2 stops41h 00m
British Airways
Tue 2/245:05 pm
CGN
-
ORD
1 stop32h 40m
British Airways
Deal found 1/18$506
This oojo deal was found by Cheapflights users on 1/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:10 pm
ORD
-
CGN
2 stops17h 20m
British Airways
Tue 3/105:05 pm
CGN
-
ORD
1 stop27h 45m
British Airways
Deal found 1/18$518
This oojo deal was found by Cheapflights users on 1/18. 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 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 3/175:05 pm
CGN
-
ORD
1 stop32h 40m
British Airways
Deal found 1/18$521
This oojo deal was found by Cheapflights users on 1/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:31 pm
STL
-
CGN
2 stops14h 59m
British Airways
Sun 3/14:35 pm
CGN
-
STL
2 stops35h 37m
British Airways
Deal found 1/18$546
This British Airways deal was found by Cheapflights users on 1/15. 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 stop33h 10m
British Airways
Deal found 1/15$574
This FlightHub deal was found by Cheapflights users on 1/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
STL
-
CGN
2 stops37h 05m
Multiple Airlines
Mon 3/161:20 pm
CGN
-
STL
2 stops16h 31m
Multiple Airlines
Deal found 1/16$580
This Air Canada deal was found by Cheapflights users on 1/15. 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.
Thu 1/294:05 pm
STL
-
CGN
2 stops17h 15m
Air Canada
Mon 2/26:55 pm
CGN
-
STL
2 stops51h 20m
Air Canada
Deal found 1/15$638
This KAYAK deal was found by Cheapflights users on 1/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2411:22 am
STL
-
CGN
2 stops38h 33m
Austrian Airlines
Thu 2/58:20 pm
CGN
-
STL
2 stops34h 39m
Austrian Airlines
Deal found 1/17$669
This oojo deal was found by Cheapflights users on 1/17. 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 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 stops30h 43m
British Airways
Deal found 1/17$696
This United Airlines deal was found by Cheapflights users on 1/17. 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.
Fri 11/201:30 pm
STL
-
CGN
2 stops20h 45m
United Airlines
Sat 11/289:10 am
CGN
-
STL
2 stops20h 44m
United Airlines
Deal found 1/17$776
This Air Canada deal was found by Cheapflights users on 1/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
STL
-
CGN
2 stops13h 05m
Air Canada
Mon 3/168:40 am
CGN
-
STL
3 stops18h 27m
Air Canada
Deal found 1/17$828

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 18, 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

Sun 2/22

5:10 pm-4:30 pm

1 stop16h 20m

Cologne Köln/Bonn

Tue 3/10

5:05 pm-7:45 pm

1 stop32h 40m

$493

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 2/17

4:10 pm-4:10 pm

2 stops41h 00m

Cologne Köln/Bonn

Tue 2/24

5:05 pm-6:45 pm

1 stop32h 40m

$506

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

4:01 pm-4:30 pm

2 stops17h 29m

Cologne Köln/Bonn

Tue 3/10

5:05 pm-2:50 pm

1 stop27h 45m

$518

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

2:04 pm-4:30 pm

2 stops19h 26m

Cologne Köln/Bonn

Tue 3/17

5:05 pm-7:45 pm

1 stop32h 40m

$518

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

6:31 pm-4:30 pm

2 stops14h 59m

Cologne Köln/Bonn

Sun 3/1

4:35 pm-9:12 pm

2 stops35h 37m

$546

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 3/5

4:05 pm-12:10 pm

2 stops37h 05m

Cologne Köln/Bonn

Mon 3/16

1:20 pm-11:51 pm

2 stops16h 31m

$580

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 1/29

4:05 pm-4:20 pm

2 stops17h 15m

Cologne Köln/Bonn

Mon 2/2

6:55 pm-3:15 pm

2 stops51h 20m

$638

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Sat 1/24

11:22 am-8:55 am

2 stops38h 33m

Cologne Köln/Bonn

Thu 2/5

8:20 pm-11:59 pm

2 stops34h 39m

$669

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-5:58 pm

2 stops30h 43m

$696

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 3/5

4:05 pm-12:10 pm

2 stops13h 05m

Cologne Köln/Bonn

Mon 3/16

8:40 am-9:07 pm

3 stops18h 27m

$828

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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 $417). 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 and Air Canada fly from Illinois to Cologne in about 16h 20m. The time it takes to get you to your destination can typically vary by up to 55m. 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 $417). 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 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$584Average$779FlexibilityNo cancel feeOn-time70%

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