How long is the flight from Illinois to Cologne?

Airlines like British Airways 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 . The distance between Illinois and Cologne is about 4244 mi.

In terms of precipitation, rainfall in Cologne ranges from 2.0 - 3.5 inches per month. June is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Cologne when rainfall is around 2.0 in.

If weather is an important factor for your trip to Cologne, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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.

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.

$304+ Flights from Illinois to Cologne

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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 3, 2025.

Mon 12/88:35 pmORD - CGN

1 stop30h 35mBritish Airways

Sun 12/144:35 pmCGN - ORD

2 stops35h 55mBritish Airways

Deal found 12/1

$868

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

Mon 12/811:50 amORD - CGN

1 stop15h 45mTurkish Airlines

Sun 12/1411:35 amCGN - ORD

1 stop29h 30mTurkish Airlines

Deal found 12/1

$1,041

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

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

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

Mon 12/16:43 pmSTL - CGN

2 stops17h 12mLufthansa

Mon 12/81:20 pmCGN - STL

2 stops17h 22mLufthansa

Deal found 12/1

$1,638

Best flights from Illinois to Cologne
Discover carefully curated flight deals from Illinois to Cologne that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 3, 2025.

Wed 1/149:45 pmORD - CGN

1 stop11h 25mBritish Airways

Wed 1/215:15 pmCGN - ORD

1 stop27h 35mBritish Airways

Deal found 11/30

$498

Sat 1/174:05 pmSTL - CGN

2 stops18h 05mMultiple Airlines

Sat 1/249:10 amCGN - STL

2 stops21h 49mMultiple Airlines

Deal found 12/3

$553

Thu 3/52:00 pmSTL - CGN

2 stops18h 40mBritish Airways

Mon 3/165:15 pmCGN - STL

2 stops30h 46mBritish Airways

Deal found 12/3

$570

Tue 2/2411:46 amSTL - CGN

2 stops21h 44mBritish Airways

Sun 3/14:35 pmCGN - STL

2 stops37h 43mBritish Airways

Deal found 12/3

$570

Sun 3/13:50 pmORD - CGN

1 stop11h 35mMultiple Airlines

Thu 3/510:05 pmCGN - ORD

2 stops26h 15mMultiple Airlines

Deal found 12/2

$682

Sat 1/175:25 pmORD - CGN

2 stops40h 05mBritish Airways

Sat 1/245:10 pmCGN - ORD

2 stops45h 02mBritish Airways

Deal found 12/3

$570

Sat 1/179:55 pmORD - CGN

2 stops16h 00mMultiple Airlines

Fri 1/2312:55 amCGN - ORD

3 stops26h 05mMultiple Airlines

Deal found 12/3

$687

Thu 1/159:45 pmORD - CGN

1 stop10h 55mBritish Airways

Thu 1/225:05 pmCGN - ORD

2 stops31h 37mBritish Airways

Deal found 11/30

$577

Fri 1/169:45 pmORD - CGN

1 stop11h 35mBritish Airways

Fri 1/234:35 pmCGN - ORD

2 stops32h 12mBritish Airways

Deal found 12/2

$580

Tue 1/68:18 pmORD - CGN

2 stops36h 52mBritish Airways

Tue 1/135:05 pmCGN - ORD

2 stops45h 07mBritish Airways

Deal found 12/2

$585

Tue 2/242:06 pmSTL - CGN

2 stops19h 24mMultiple Airlines

Sun 3/14:35 pmCGN - STL

3 stops25h 38mMultiple Airlines

Deal found 12/1

$866

Fri 2/65:04 pmSTL - CGN

2 stops16h 16mBritish Airways

Tue 2/105:05 pmCGN - STL

2 stops32h 09mBritish Airways

Deal found 11/30

$761

Last-minute flights from Illinois to Cologne
Discover last-minute flight deals from Illinois to Cologne. Data last updated December 3, 2025 and is based on user searches.

Tue 1/69:15 pmORD - CGN

2 stops35h 55mBritish Airways

Tue 1/135:05 pmCGN - ORD

1 stop32h 40mBritish Airways

Deal found 12/2

$552

Wed 1/149:45 pmORD - CGN

1 stop11h 25mBritish Airways

Wed 1/215:15 pmCGN - ORD

1 stop27h 35mBritish Airways

Deal found 11/30

$498

Thu 1/155:10 pmORD - CGN

1 stop15h 30mBritish Airways

Thu 1/225:05 pmCGN - ORD

1 stop32h 40mBritish Airways

Deal found 11/30

$571

Thu 1/156:30 pmORD - CGN

2 stops20h 30mMultiple Airlines

Thu 1/227:40 pmCGN - ORD

3 stops28h 40mMultiple Airlines

Deal found 11/30

$641

Fri 1/169:45 pmORD - CGN

1 stop11h 35mBritish Airways

Fri 1/234:35 pmCGN - ORD

2 stops32h 12mBritish Airways

Deal found 12/2

$580

Sat 1/174:05 pmSTL - CGN

2 stops18h 05mMultiple Airlines

Sat 1/249:10 amCGN - STL

2 stops21h 49mMultiple Airlines

Deal found 12/3

$553

Sat 1/175:25 pmORD - CGN

2 stops40h 05mBritish Airways

Sat 1/245:10 pmCGN - ORD

2 stops45h 02mBritish Airways

Deal found 12/3

$570

One-way flights from Illinois to Cologne
Search for one-way flight options from Illinois to Cologne. Find affordable one-way fares based on user searches. Data last updated December 3, 2025.

Sun 1/186:30 pmORD - CGN

2 stops13h 25mMultiple Airlines

Deal found 12/3

$304

Sun 1/185:10 pmORD - CGN

1 stop16h 20mBritish Airways

Deal found 12/3

$369

Mon 1/195:10 pmORD - CGN

1 stop16h 00mBritish Airways

Deal found 12/3

$384

Mon 12/152:26 pmORD - CGN

3 stops45h 54mMultiple Airlines

Deal found 11/30

$398

Thu 1/159:45 pmORD - CGN

1 stop10h 55mBritish Airways

Deal found 12/3

$434

Tue 1/209:45 pmORD - CGN

1 stop11h 45mBritish Airways

Deal found 12/3

$460

Mon 1/191:45 pmORD - CGN

2 stops19h 25mAmerican Airlines

Deal found 12/3

$483

Thu 1/153:11 pmSTL - CGN

2 stops18h 09mUnited Airlines

Deal found 12/1

$527

Thu 1/154:14 pmORD - CGN

2 stops16h 26mAmerican Airlines

Deal found 12/3

$533

Tue 12/237:01 pmORD - CGN

3 stops44h 44mMultiple Airlines

Deal found 12/1

$557

Mon 12/2210:40 amSTL - CGN

2 stops38h 40mMultiple Airlines

Deal found 12/1

$625

Sun 12/2110:57 amSTL - CGN

3 stops40h 38mMultiple Airlines

Deal found 12/1

$785

Find flight deals from Illinois to Cologne

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$498 (oojo)
One-way from	$304 (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

Search Deals

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).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 1/14

9:45 pm-4:10 pm

1 stop11h 25m

Cologne Köln/Bonn

Wed 1/21

5:15 pm-1:50 pm

1 stop27h 35m

$498

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

Thu 3/5

2:00 pm-3:40 pm

2 stops18h 40m

Cologne Köln/Bonn

Mon 3/16

5:15 pm-6:01 pm

2 stops30h 46m

$570

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 1/15

9:45 pm-3:40 pm

1 stop10h 55m

Cologne Köln/Bonn

Thu 1/22

5:05 pm-5:42 pm

2 stops31h 37m

$577

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

Tue 1/6

8:18 pm-4:10 pm

2 stops36h 52m

Cologne Köln/Bonn

Tue 1/13

5:05 pm-7:12 am

2 stops45h 07m

$585

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 27 results

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?

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

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 11h 25m. 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, 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Illinois to Cologne

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$584	Average$747	FlexibilityNo cancel fee	On-time70%

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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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Cologne with Cheapflights

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3. Compare prices and book

Cheap flight deals from Illinois to Cologne

Cheapest flights from Illinois to CologneExplore 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 3, 2025.

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 3, 2025.

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 3, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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Use the filters below to find and compare flights from Illinois to Cologne that are best for you.

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.

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?

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 3, 2025.

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?

How long is the flight from Illinois to Cologne?

Can I find deals for flights from Illinois to Cologne that include hotel bookings?

How can I find direct flights from Illinois to Cologne?

Can I find deals for business class flights from Illinois to Cologne?

What is the cheapest month to book a flight from Illinois to Cologne?

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Alternative routes for Illinois to Cologne

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Top airline flying from Illinois to Cologne

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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 3, 2025.