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Cologne

$235+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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 21, 2026.

This oojo deal was found by Cheapflights users on 1/19. 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.
Tue 3/34:10 pm
ORD
-
CGN
2 stops17h 20m
British Airways
Tue 3/105:05 pm
CGN
-
ORD
2 stops29h 09m
British Airways
Deal found 1/19$506
This oojo deal was found by Cheapflights users on 1/21. 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 3/34:05 pm
ORD
-
CGN
2 stops17h 25m
British Airways
Tue 3/175:05 pm
CGN
-
ORD
1 stop32h 40m
British Airways
Deal found 1/21$518
This oojo deal was found by Cheapflights users on 1/19. 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.
Tue 2/246:18 pm
STL
-
CGN
2 stops15h 12m
British Airways
Sun 3/14:35 pm
CGN
-
STL
2 stops35h 37m
British Airways
Deal found 1/19$546
This British Airways deal was found by Cheapflights users on 1/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:10 pm
ORD
-
CGN
1 stop16h 00m
British Airways
Sun 3/14:35 pm
CGN
-
ORD
1 stop33h 10m
British Airways
Deal found 1/20$573
This Mytrip deal was found by Cheapflights users on 1/19. 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.
Thu 3/510:00 am
ORD
-
CGN
2 stops29h 00m
Multiple Airlines
Thu 3/1210:05 pm
CGN
-
ORD
2 stops27h 40m
Multiple Airlines
Deal found 1/19$576
This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/228:53 pm
ORD
-
CGN
2 stops36h 17m
British Airways
Mon 3/95:15 pm
CGN
-
ORD
2 stops28h 59m
British Airways
Deal found 1/20$579
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Sun 2/16:30 pm
ORD
-
CGN
2 stops23h 25m
Multiple Airlines
Sat 2/72:45 pm
CGN
-
ORD
2 stops31h 00m
Multiple Airlines
Deal found 1/20$615
This oojo deal was found by Cheapflights users on 1/21. 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 3/59:35 am
STL
-
CGN
2 stops23h 05m
British Airways
Mon 3/165:15 pm
CGN
-
STL
2 stops36h 33m
British Airways
Deal found 1/21$634
This KAYAK deal was found by Cheapflights users on 1/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:05 pm
STL
-
CGN
2 stops40h 05m
Lufthansa
Sat 3/148:40 am
CGN
-
STL
2 stops36h 49m
Lufthansa
Deal found 1/19$721
This Air Canada deal was found by Cheapflights users on 1/19. 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 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 1/19$828
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/304:05 pm
STL
-
CGN
2 stops13h 05m
Air Canada
Mon 2/26:55 pm
CGN
-
STL
2 stops51h 20m
Air Canada
Deal found 1/18$868
This American Airlines deal was found by Cheapflights users on 1/21. 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 2/242:00 pm
STL
-
CGN
2 stops19h 30m
Multiple Airlines
Sun 3/14:35 pm
CGN
-
STL
3 stops25h 36m
Multiple Airlines
Deal found 1/21$869

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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$506
(oojo)

One-way from

$235
(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 21, 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

4:10 pm-4:30 pm

2 stops17h 20m

Cologne Köln/Bonn

Tue 3/10

5:05 pm-4:14 pm

2 stops29h 09m

$506

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/3

5:10 pm-4:30 pm

1 stop16h 20m

Cologne Köln/Bonn

Tue 3/17

5:05 pm-4:14 pm

2 stops29h 09m

$509

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 2/22

5:10 pm-4:30 pm

1 stop16h 20m

Cologne Köln/Bonn

Mon 3/9

5:15 pm-7:45 pm

1 stop32h 30m

$520

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

6:18 pm-4:30 pm

2 stops15h 12m

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

9:35 am-3:40 pm

2 stops23h 05m

Cologne Köln/Bonn

Mon 3/16

5:15 pm-11:48 pm

2 stops36h 33m

$634

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 3/6

6:05 pm-5:10 pm

2 stops40h 05m

Cologne Köln/Bonn

Sat 3/14

8:40 am-3:29 pm

2 stops36h 49m

$721

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

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 1/30

4:05 pm-12:10 pm

2 stops13h 05m

Cologne Köln/Bonn

Mon 2/2

6:55 pm-3:15 pm

2 stops51h 20m

$868

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 4/19

7:25 pm-10:55 pm

2 stops20h 30m

$235

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 4/19

11:25 am-9:25 am

1 stop15h 00m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 14 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 fly from Illinois to Cologne in about 17h 20m. The time it takes to get you to your destination can typically vary by up to . The distance between Illinois and Cologne is about 4244 mi.

  • 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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Alternative routes for Illinois to Cologne

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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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$584Average$779FlexibilityNo cancel feeOn-time70%

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