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Cheap flights from Illinois to Cologne from $335

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 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 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
11:25 am - 6:10 pm
ORD
-
CGN
23h 45m
1 stop
Turkish Airlines Logo
7:10 pm - 9:40 am
CGN
-
ORD
21h 30m
1 stop
$628Turkish Airlines
Mon, Apr 13 - Tue, Apr 28
Turkish Airlines Logo
8:10 pm - 6:10 pm
ORD
-
CGN
15h 00m
1 stop
Turkish Airlines Logo
10:25 am - 9:40 am
CGN
-
ORD
30h 15m
1 stop
$629Turkish Airlines
Mon, Apr 20 - Tue, Apr 28
Turkish Airlines Logo
11:25 am - 9:25 am
ORD
-
CGN
15h 00m
1 stop
Turkish Airlines Logo
7:10 pm - 9:40 am
CGN
-
ORD
21h 30m
1 stop
$639Turkish Airlines
Mon, Apr 13 - Tue, Apr 28
Turkish Airlines Logo
8:10 pm - 6:10 pm
ORD
-
CGN
15h 00m
1 stop
Turkish Airlines Logo
2:50 pm - 9:40 am
CGN
-
ORD
25h 50m
1 stop
$726Turkish Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
2:20 pm - 12:50 am
ORD
-
CGN
27h 30m
2 stops
Multiple Airlines Logo
8:45 pm - 3:55 pm
CGN
-
ORD
26h 10m
2 stops
$762Multiple Airlines
Mon, Apr 13 - Tue, Apr 28
Multiple Airlines Logo
2:20 pm - 12:50 am
ORD
-
CGN
27h 30m
2 stops
Multiple Airlines Logo
8:45 pm - 3:55 pm
CGN
-
ORD
26h 10m
2 stops
$774Multiple Airlines
Mon, Apr 13 - Tue, Apr 28
Lufthansa Logo
9:40 pm - 5:20 pm
ORD
-
CGN
12h 40m
1 stop
Lufthansa Logo
8:30 am - 6:15 pm
CGN
-
ORD
16h 45m
1 stop
$866Lufthansa
Sun, May 3 - Tue, May 12
Lufthansa Logo
11:37 am - 12:25 pm
STL
-
CGN
17h 48m
2 stops
Lufthansa Logo
1:05 pm - 11:57 pm
CGN
-
STL
17h 52m
2 stops
$965Lufthansa
Wed, Apr 29 - Tue, May 5
Air Canada Logo
2:40 pm - 12:25 pm
STL
-
CGN
14h 45m
2 stops
Air Canada Logo
1:05 pm - 2:00 pm
CGN
-
STL
31h 55m
2 stops
$1,036Air Canada
Mon, Aug 17 - Thu, Sep 10
Air Canada Logo
2:40 pm - 12:25 pm
STL
-
CGN
14h 45m
2 stops
Air Canada Logo
1:05 pm - 2:00 pm
CGN
-
STL
31h 55m
2 stops
$1,037Air Canada
Mon, Aug 17 - Thu, Sep 10

Lufthansa flights from Illinois to Cologne

Our best Lufthansa deals on Illinois to Cologne flight tickets
Lufthansa
May 3
ORD9:40 pmChicago O'Hare Intl
12h 40m
1 stop
CGN5:20 pmCologne Köln/Bonn
May 12
CGN8:30 amCologne Köln/Bonn
16h 45m
1 stop
ORD6:15 pmChicago O'Hare Intl
$866
Lufthansa
Apr 29
STL11:37 amLambert-St Louis
17h 48m
2 stops
CGN12:25 pmCologne Köln/Bonn
May 5
CGN1:05 pmCologne Köln/Bonn
17h 52m
2 stops
STL11:57 pmLambert-St Louis
$965
Lufthansa
Aug 17
STL1:18 pmLambert-St Louis
16h 07m
2 stops
CGN12:25 pmCologne Köln/Bonn
Sep 10
CGN1:05 pmCologne Köln/Bonn
15h 17m
2 stops
STL9:22 pmLambert-St Louis
$970

Turkish Airlines flights from Illinois to Cologne

Our best Turkish Airlines deals on Illinois to Cologne flight tickets
Turkish Airlines
Apr 13
ORD11:25 amChicago O'Hare Intl
23h 45m
1 stop
CGN6:10 pmCologne Köln/Bonn
Apr 28
CGN7:10 pmCologne Köln/Bonn
21h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$628
Turkish Airlines
Apr 20
ORD8:10 pmChicago O'Hare Intl
15h 00m
1 stop
CGN6:10 pmCologne Köln/Bonn
Apr 28
CGN10:25 amCologne Köln/Bonn
30h 15m
1 stop
ORD9:40 amChicago O'Hare Intl
$629
Turkish Airlines
Apr 13
ORD11:25 amChicago O'Hare Intl
23h 45m
1 stop
CGN6:10 pmCologne Köln/Bonn
Apr 28
CGN7:10 pmCologne Köln/Bonn
21h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$636

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 April 3, 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

Cheapest round-trip

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 4/13

11:25 am-6:10 pm

1 stop23h 45m

Cologne Köln/Bonn

Tue 4/28

7:10 pm-9:40 am

1 stop21h 30m

$628

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 4/20

8:10 pm-6:10 pm

1 stop15h 00m

Cologne Köln/Bonn

Tue 4/28

10:25 am-9:40 am

1 stop30h 15m

$629

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 4/13

11:25 am-9:25 am

1 stop15h 00m

Cologne Köln/Bonn

Tue 4/28

7:10 pm-9:40 am

1 stop21h 30m

$639

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 4/16

8:10 pm-6:10 pm

1 stop15h 00m

Cologne Köln/Bonn

Mon 4/20

2:50 pm-9:40 am

1 stop25h 50m

$726

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 4/13

2:20 pm-12:50 am

2 stops27h 30m

Cologne Köln/Bonn

Tue 4/28

8:45 pm-3:55 pm

2 stops26h 10m

$762

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 4/13

2:20 pm-12:50 am

2 stops27h 30m

Cologne Köln/Bonn

Tue 4/28

8:45 pm-3:55 pm

2 stops26h 10m

$774
Quickest round-trip

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 5/3

9:40 pm-5:20 pm

1 stop12h 40m

Cologne Köln/Bonn

Tue 5/12

8:30 am-6:15 pm

1 stop16h 45m

$866

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 4/29

11:37 am-12:25 pm

2 stops17h 48m

Cologne Köln/Bonn

Tue 5/5

1:05 pm-11:57 pm

2 stops17h 52m

$965

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Mon 8/17

2:40 pm-12:25 pm

2 stops14h 45m

Cologne Köln/Bonn

Thu 9/10

1:05 pm-2:00 pm

2 stops31h 55m

$1,036

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Mon 8/17

2:40 pm-12:25 pm

2 stops14h 45m

Cologne Köln/Bonn

Thu 9/10

1:05 pm-2:00 pm

2 stops31h 55m

$1,037

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 35% of people opting to fly with this airline when traveling to Cologne. Keep in mind that there are 12 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 50m

Direct flights

None
The fastest flight from Illinois to Cologne takes 11h 50m
There are no direct flights from Illinois to Cologne. There are no popular flight routes from Illinois to Cologne.
Search flight deals

Frequently asked questions about flying from Illinois to Cologne

  • 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 $636Free CancellationRating
6.7
7,848 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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