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Cologne

$456+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$624
(Ovago)

One-way from

$456
(British Airways)

Popular in

November

Cheapest in

February

Average price

$777
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. 5% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This Ovago deal was found by Cheapflights users on 9/13. 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.
Tue 10/285:40 pmORD - CGN
2 stops16h 50mBritish Airways
Tue 11/45:05 pmCGN - ORD
1 stop27h 45mBritish Airways
Deal found 9/13$563
This Ovago deal was found by Cheapflights users on 9/12. 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.
Tue 11/189:45 pmORD - CGN
1 stop11h 45mBritish Airways
Sun 11/234:35 pmCGN - ORD
1 stop28h 15mBritish Airways
Deal found 9/12$608
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Tue 10/283:35 pmORD - CGN
2 stops18h 10mMultiple Airlines
Tue 11/49:10 amCGN - ORD
2 stops17h 50mMultiple Airlines
Deal found 9/13$623
This British Airways deal was found by Cheapflights users on 9/15. 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.
Sun 10/124:55 pmORD - CGN
1 stop20h 30mBritish Airways
Mon 10/275:15 pmCGN - ORD
1 stop32h 30mBritish Airways
Deal found 9/15$638
This British Airways deal was found by Cheapflights users on 9/14. 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.
Sat 10/119:15 pmORD - CGN
1 stop29h 30mBritish Airways
Mon 10/275:15 pmCGN - ORD
1 stop27h 35mBritish Airways
Deal found 9/14$688
This British Airways deal was found by Cheapflights users on 9/13. 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 11/265:10 pmORD - CGN
1 stop16h 00mBritish Airways
Sun 11/304:35 pmCGN - ORD
1 stop28h 15mBritish Airways
Deal found 9/13$698
This British Airways deal was found by Cheapflights users on 9/15. 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.
Sun 10/129:15 pmORD - CGN
1 stop16h 10mBritish Airways
Tue 10/285:05 pmCGN - ORD
1 stop32h 40mBritish Airways
Deal found 9/15$713
This British Airways deal was found by Cheapflights users on 9/15. 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.
Mon 10/139:15 pmORD - CGN
1 stop16h 15mBritish Airways
Mon 10/275:15 pmCGN - ORD
1 stop32h 30mBritish Airways
Deal found 9/15$723
This British Airways deal was found by Cheapflights users on 9/14. 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.
Sat 10/119:15 pmORD - CGN
1 stop16h 35mBritish Airways
Tue 10/285:05 pmCGN - ORD
1 stop27h 45mBritish Airways
Deal found 9/14$763
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:09 pmSTL - CGN
2 stops21h 11mBritish Airways
Tue 10/219:15 pmCGN - STL
2 stops30h 11mBritish Airways
Deal found 9/14$780
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Tue 10/141:30 pmSTL - CGN
3 stops26h 40mMultiple Airlines
Tue 10/211:35 pmCGN - STL
2 stops32h 43mMultiple Airlines
Deal found 9/14$905

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 September 15, 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

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 10/28

5:40 pm-4:30 pm

2 stops16h 50m

Cologne Köln/Bonn

Tue 11/4

5:05 pm-1:50 pm

1 stop27h 45m

$563

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 11/18

9:45 pm-4:30 pm

1 stop11h 45m

Cologne Köln/Bonn

Sun 11/23

4:35 pm-1:50 pm

1 stop28h 15m

$608

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 10/28

3:35 pm-3:45 pm

2 stops18h 10m

Cologne Köln/Bonn

Tue 11/4

9:10 am-8:00 pm

2 stops17h 50m

$623

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 10/11

9:15 pm-9:45 am

1 stop29h 30m

Cologne Köln/Bonn

Mon 10/27

5:15 pm-2:50 pm

1 stop27h 35m

$688

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 11/26

5:10 pm-4:10 pm

1 stop16h 00m

Cologne Köln/Bonn

Sun 11/30

4:35 pm-1:50 pm

1 stop28h 15m

$698

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 10/12

7:15 pm-8:25 pm

1 stop18h 10m

Cologne Köln/Bonn

Tue 10/28

5:05 pm-2:50 pm

1 stop27h 45m

$713

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 10/13

9:15 pm-8:30 pm

1 stop16h 15m

Cologne Köln/Bonn

Mon 10/27

5:15 pm-7:45 pm

1 stop32h 30m

$723

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 10/14

5:09 pm-9:20 pm

2 stops21h 11m

Cologne Köln/Bonn

Tue 10/21

9:15 pm-8:26 pm

2 stops30h 11m

$780

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 10/14

1:30 pm-11:10 pm

3 stops26h 40m

Cologne Köln/Bonn

Tue 10/21

1:35 pm-3:18 pm

2 stops32h 43m

$905

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 11/15

9:45 pm-3:40 pm

1 stop10h 55m

$508

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 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, October is the cheapest month in which you can book a flight from Illinois to Cologne (average of $649). Flying from Illinois to Cologne in June is currently the most expensive (average of $1,249). 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Cologne as you normally would.

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 16h 50m. 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, October is the cheapest month in which you can book a flight from Illinois to Cologne (average of $649). Flying from Illinois to Cologne in June is currently the most expensive (average of $1,249). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$739FlexibilityNo cancel feeOn-time70%

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