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Cheap flights from Illinois to Cologne from $316

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Cologne departing on 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Illinois to Cologne

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
8:10 pm - 1:50 pm
ORD
-
CGN
34h 40m
1 stop
Turkish Airlines Logo
7:10 pm - 9:40 am
CGN
-
ORD
21h 30m
1 stop
$643Turkish Airlines
Tue, Apr 14 - Sat, Apr 18
Turkish Airlines Logo
8:20 pm - 10:35 am
ORD
-
CGN
31h 15m
1 stop
Turkish Airlines Logo
11:35 am - 11:05 am
CGN
-
ORD
29h 30m
1 stop
$658Turkish Airlines
Mon, Mar 2 - Mon, Mar 16
Multiple Airlines Logo
7:25 pm - 9:05 pm
ORD
-
CGN
18h 40m
2 stops
Multiple Airlines Logo
7:35 pm - 9:25 pm
CGN
-
ORD
32h 50m
3 stops
$660Multiple Airlines
Tue, Apr 14 - Sat, Apr 18
British Airways Logo
5:00 pm - 4:10 pm
ORD
-
CGN
16h 10m
2 stops
British Airways Logo
5:15 pm - 2:50 pm
CGN
-
ORD
27h 35m
1 stop
$671British Airways
Mon, Mar 2 - Mon, Mar 16
British Airways Logo
4:10 pm - 4:10 pm
ORD
-
CGN
17h 00m
2 stops
British Airways Logo
5:15 pm - 6:00 pm
CGN
-
ORD
30h 45m
2 stops
$674British Airways
Mon, Mar 2 - Mon, Mar 16
Multiple Airlines Logo
7:25 pm - 9:05 pm
ORD
-
CGN
18h 40m
2 stops
Multiple Airlines Logo
2:15 pm - 4:00 pm
CGN
-
ORD
32h 45m
2 stops
$703Multiple Airlines
Tue, Apr 14 - Sat, Apr 18
Lufthansa Logo
11:39 am - 12:35 pm
STL
-
CGN
17h 56m
2 stops
Lufthansa Logo
1:15 pm - 10:59 pm
CGN
-
STL
16h 44m
2 stops
$745Lufthansa
Tue, Feb 24 - Sun, Mar 1
Lufthansa Logo
11:39 am - 12:35 pm
STL
-
CGN
17h 56m
2 stops
Lufthansa Logo
1:15 pm - 10:59 pm
CGN
-
STL
16h 44m
2 stops
$746Lufthansa
Tue, Feb 24 - Sun, Mar 1
United Airlines Logo
2:45 pm - 5:15 pm
STL
-
CGN
19h 30m
2 stops
United Airlines Logo
9:10 am - 5:44 pm
CGN
-
STL
15h 34m
2 stops
$788United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
12:15 pm - 12:10 pm
STL
-
CGN
16h 55m
2 stops
United Airlines Logo
6:45 am - 7:14 pm
CGN
-
STL
18h 29m
2 stops
$980United Airlines
Thu, Mar 5 - Mon, Mar 16

United Airlines flights from Illinois to Cologne

Our best United Airlines deals on Illinois to Cologne flight tickets
United Airlines
Feb 25
STL2:45 pmLambert-St Louis
19h 30m
2 stops
CGN5:15 pmCologne Köln/Bonn
Mar 1
CGN9:10 amCologne Köln/Bonn
15h 34m
2 stops
STL5:44 pmLambert-St Louis
$788
United Airlines
Feb 25
STL3:15 pmLambert-St Louis
14h 35m
2 stops
CGN12:50 pmCologne Köln/Bonn
Mar 1
CGN1:15 pmCologne Köln/Bonn
16h 44m
2 stops
STL10:59 pmLambert-St Louis
$789
United Airlines
Mar 5
STL12:15 pmLambert-St Louis
16h 55m
2 stops
CGN12:10 pmCologne Köln/Bonn
Mar 16
CGN6:45 amCologne Köln/Bonn
18h 29m
2 stops
STL7:14 pmLambert-St Louis
$980

British Airways flights from Illinois to Cologne

Our best British Airways deals on Illinois to Cologne flight tickets
British Airways
Mar 2
ORD5:00 pmChicago O'Hare Intl
16h 10m
2 stops
CGN4:10 pmCologne Köln/Bonn
Mar 16
CGN5:15 pmCologne Köln/Bonn
27h 35m
1 stop
ORD2:50 pmChicago O'Hare Intl
$671
British Airways
Mar 2
ORD4:10 pmChicago O'Hare Intl
17h 00m
2 stops
CGN4:10 pmCologne Köln/Bonn
Mar 16
CGN5:15 pmCologne Köln/Bonn
30h 45m
2 stops
ORD6:00 pmChicago O'Hare Intl
$674
British Airways
Feb 12
ORD8:10 amChicago O'Hare Intl
24h 30m
2 stops
CGN3:40 pmCologne Köln/Bonn
Feb 19
CGN5:05 pmCologne Köln/Bonn
29h 20m
1 stop
ORD3:25 pmChicago O'Hare Intl
$721

momondo 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, momondo users made 832,500 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from Illinois to Cologne that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 4/14

8:10 pm-1:50 pm

1 stop34h 40m

Cologne Köln/Bonn

Sat 4/18

7:10 pm-9:40 am

1 stop21h 30m

$643

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 3/2

8:20 pm-10:35 am

1 stop31h 15m

Cologne Köln/Bonn

Mon 3/16

11:35 am-11:05 am

1 stop29h 30m

$658

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 4/14

7:25 pm-9:05 pm

2 stops18h 40m

Cologne Köln/Bonn

Sat 4/18

7:35 pm-9:25 pm

3 stops32h 50m

$660

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 3/2

5:00 pm-4:10 pm

2 stops16h 10m

Cologne Köln/Bonn

Mon 3/16

5:15 pm-2:50 pm

1 stop27h 35m

$671

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 3/2

4:10 pm-4:10 pm

2 stops17h 00m

Cologne Köln/Bonn

Mon 3/16

5:15 pm-6:00 pm

2 stops30h 45m

$674

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 4/14

7:25 pm-9:05 pm

2 stops18h 40m

Cologne Köln/Bonn

Sat 4/18

2:15 pm-4:00 pm

2 stops32h 45m

$703

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-10:59 pm

2 stops16h 44m

$745

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-10:59 pm

2 stops16h 44m

$746

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 2/25

2:45 pm-5:15 pm

2 stops19h 30m

Cologne Köln/Bonn

Sun 3/1

9:10 am-5:44 pm

2 stops15h 34m

$788

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Thu 3/5

12:15 pm-12:10 pm

2 stops16h 55m

Cologne Köln/Bonn

Mon 3/16

6:45 am-7:14 pm

2 stops18h 29m

$980

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Cologne from

How to get the cheapest flight ticket from Illinois to Cologne

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Illinois to Cologne Köln/Bonn?

Turkish Airlines is the most popular carrier operating from Illinois to Cologne Köln/Bonn

What airlines fly to Cologne?

Lufthansa, United Airlines and Scandinavian Airlines are the top three most popular airlines that fly to Cologne from Illinois according to our data. Lufthansa is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Cologne. Keep in mind that there are 11 different airlines that fly to Cologne on a routine basis, so you have a few additional options to choose from.

Cheap Illinois to Cologne flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Cologne

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Illinois to Cologne takes 11h 30m
There are no direct flights from Illinois to Cologne. There are no popular flight routes from Illinois to Cologne.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Cologne Köln/Bonn Airport?

    Prices for flights from Illinois to Cologne Köln/Bonn Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Cologne Köln/Bonn Airport?

  • How old do you have to be to fly from Illinois to Cologne Köln/Bonn Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Cologne Köln/Bonn Airport.

  • What documentation or ID do you need to fly to Cologne Köln/Bonn Airport?

    The travel and health documents you'll need for your trip to Cologne Köln/Bonn Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cologne Köln/Bonn Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Cologne

Compare and see reviews for airlines that fly from Illinois to Cologne with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $584Free CancellationRating
6.7
7,731 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Cologne?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Cologne. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Cologne with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cologne from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Cologne?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cologne from Illinois.

I’m not ready to book a flight from Illinois to Cologne right now. Can momondo alert me if prices change?

Price alerts on flights to Cologne from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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