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Cologne

$275+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Mytrip deal was found by Cheapflights users on 12/2. 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 12/108:00 amORD - CGN
2 stops29h 35mMultiple Airlines
Wed 12/177:40 pmCGN - ORD
3 stops31h 30mMultiple Airlines
Deal found 12/2$887
This oojo deal was found by Cheapflights users on 12/2. 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 12/1011:50 amORD - CGN
1 stop15h 45mTurkish Airlines
Wed 12/1711:35 amCGN - ORD
1 stop29h 30mTurkish Airlines
Deal found 12/2$1,166
This oojo deal was found by Cheapflights users on 12/2. 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 12/48:20 pmORD - CGN
1 stop31h 15mTurkish Airlines
Sun 12/711:35 amCGN - ORD
1 stop29h 30mTurkish Airlines
Deal found 12/2$1,185
This Mytrip deal was found by Cheapflights users on 12/2. 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 12/46:30 pmORD - CGN
2 stops20h 30mMultiple Airlines
Sun 12/710:45 pmCGN - ORD
2 stops25h 35mMultiple Airlines
Deal found 12/2$1,188
This Cheapflightsfares deal was found by Cheapflights users on 12/3. 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.
Fri 12/54:20 pmORD - CGN
1 stop11h 45mMultiple Airlines
Sun 12/71:15 pmCGN - ORD
1 stop12h 10mMultiple Airlines
Deal found 12/3$1,763
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/185:50 pmORD - CGN
1 stop11h 20mUnited Airlines
Mon 12/228:40 amCGN - ORD
1 stop12h 05mUnited Airlines
Deal found 12/3$1,814

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$549
(oojo)

One-way from

$275
(Mytrip)

Popular in

November

Cheapest in

February

Average price

$697
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
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
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 December 2025
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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 December 4, 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

Sat 1/17

4:05 pm-5:10 pm

2 stops18h 05m

Cologne Köln/Bonn

Sat 1/24

9:10 am-11:59 pm

2 stops21h 49m

$553

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Tue 2/24

11:46 am-4:30 pm

2 stops21h 44m

Cologne Köln/Bonn

Sun 3/1

4:35 pm-11:18 pm

2 stops37h 43m

$570

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 1/17

5:25 pm-4:30 pm

2 stops40h 05m

Cologne Köln/Bonn

Sat 1/24

5:10 pm-7:12 am

2 stops45h 02m

$570

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 1/29

9:45 pm-3:40 pm

1 stop10h 55m

Cologne Köln/Bonn

Mon 2/2

5:15 pm-1:50 pm

1 stop27h 35m

$571

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 1/16

9:45 pm-4:20 pm

1 stop11h 35m

Cologne Köln/Bonn

Fri 1/23

4:35 pm-5:47 pm

2 stops32h 12m

$580

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 3/1

3:50 pm-10:25 am

1 stop11h 35m

Cologne Köln/Bonn

Thu 3/5

10:05 pm-5:20 pm

2 stops26h 15m

$682

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 1/17

9:55 pm-8:55 pm

2 stops16h 00m

Cologne Köln/Bonn

Fri 1/23

12:55 am-8:00 pm

3 stops26h 05m

$687

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 1/17

8:20 pm-5:15 pm

1 stop37h 55m

Cologne Köln/Bonn

Wed 1/21

11:35 am-10:05 am

1 stop29h 30m

$722

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 1/16

2:00 pm-8:25 am

3 stops35h 25m

Cologne Köln/Bonn

Fri 1/23

10:25 pm-3:10 pm

2 stops23h 45m

$730

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 2/6

5:04 pm-4:20 pm

2 stops16h 16m

Cologne Köln/Bonn

Tue 2/10

5:05 pm-6:14 pm

2 stops32h 09m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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 December 4, 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 British Airways fly from Illinois to Cologne in about 21h 44m. The time it takes to get you to your destination can typically vary by up to . The distance between Illinois and Cologne is about 4494 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, 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$584Average$747FlexibilityNo cancel feeOn-time70%

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