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$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 18 — Dec 251
Thu 12/18
Thu 12/25
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 November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$573
(FlightHub)

One-way from

$304
(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.
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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. 17% potential increase in price ($173 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 18, 2025.

This Air Canada deal was found by Cheapflights users on 11/17. 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.
Mon 12/14:05 pmSTL - CGN
2 stops37h 05mAir Canada
Mon 12/86:55 pmCGN - STL
2 stops51h 34mAir Canada
Deal found 11/17$587
This Mytrip deal was found by Cheapflights users on 11/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 pmORD - CGN
2 stops19h 55mMultiple Airlines
Sun 12/710:45 pmCGN - ORD
2 stops25h 35mMultiple Airlines
Deal found 11/17$689
This Kissandfly.com deal was found by Cheapflights users on 11/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:30 pmORD - CGN
1 stop14h 40mBritish Airways
Wed 12/312:00 pmCGN - ORD
1 stop12h 00mBritish Airways
Deal found 11/16$706
This Mytrip deal was found by Cheapflights users on 11/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:40 pmORD - CGN
1 stop19h 40mMultiple Airlines
Wed 12/107:40 pmCGN - ORD
2 stops29h 15mMultiple Airlines
Deal found 11/17$795
This Mytrip deal was found by Cheapflights users on 11/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 pmORD - CGN
2 stops23h 25mMultiple Airlines
Thu 11/276:15 pmCGN - ORD
2 stops27h 45mMultiple Airlines
Deal found 11/16$832
This Mytrip deal was found by Cheapflights users on 11/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:30 pmORD - CGN
2 stops19h 55mMultiple Airlines
Wed 1/77:40 pmCGN - ORD
3 stops28h 40mMultiple Airlines
Deal found 11/16$835
This oojo deal was found by Cheapflights users on 11/17. 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.
Sat 12/611:50 amORD - CGN
1 stop22h 25mTurkish Airlines
Wed 12/106:15 pmCGN - ORD
1 stop22h 50mTurkish Airlines
Deal found 11/17$863
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:46 pmSTL - CGN
2 stops16h 24mBritish Airways
Mon 12/85:15 pmCGN - STL
2 stops30h 35mBritish Airways
Deal found 11/18$1,294

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 18, 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

Wed 2/11

9:45 pm-4:10 pm

1 stop11h 25m

Cologne Köln/Bonn

Wed 2/18

5:15 pm-5:53 pm

2 stops31h 38m

$581

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 2/19

1:11 pm-12:35 pm

2 stops16h 24m

Cologne Köln/Bonn

Mon 2/23

1:20 pm-10:00 pm

2 stops15h 40m

$584

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Mon 12/1

4:05 pm-12:10 pm

2 stops37h 05m

Cologne Köln/Bonn

Mon 12/8

6:55 pm-3:29 pm

2 stops51h 34m

$587

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

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-10:00 pm

2 stops15h 45m

$620

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 3/24

12:50 pm-5:15 pm

1 stop22h 25m

Cologne Köln/Bonn

Sun 3/29

7:10 pm-9:40 am

1 stop21h 30m

$630

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 2/11

11:50 am-5:15 pm

1 stop22h 25m

Cologne Köln/Bonn

Wed 2/18

6:15 pm-10:05 am

1 stop22h 50m

$631

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 2/6

8:20 pm-5:15 pm

1 stop37h 55m

Cologne Köln/Bonn

Fri 2/13

11:35 am-6:25 pm

1 stop37h 50m

$644

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 24 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, 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 18, 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.

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 Air Canada, British Airways, and Lufthansa 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 11h 19m. 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

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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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$739FlexibilityNo cancel feeOn-time70%

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