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Cheap flights from Illinois to Cologne from $324

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 9/13. 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

Find the cheapest flights from Illinois to Cologne

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:15 pm - 1:05 am
ORD
-
CGN
22h 50m
2 stops
Multiple Airlines Logo
9:40 pm - 4:10 pm
CGN
-
ORD
25h 30m
2 stops
$659Multiple Airlines
Wed, Oct 7 - Sun, Oct 11
Multiple Airlines Logo
7:25 pm - 11:20 pm
ORD
-
CGN
20h 55m
2 stops
Multiple Airlines Logo
11:15 pm - 7:48 pm
CGN
-
ORD
27h 33m
3 stops
$742Multiple Airlines
Sun, Sep 6 - Tue, Sep 22
Lufthansa Logo
9:50 pm - 4:55 pm
ORD
-
CGN
12h 05m
1 stop
Lufthansa Logo
1:10 pm - 6:25 pm
CGN
-
ORD
12h 15m
1 stop
$775Lufthansa
Sun, Nov 1 - Wed, Nov 25
Multiple Airlines Logo
7:15 pm - 1:05 am
ORD
-
CGN
22h 50m
2 stops
Multiple Airlines Logo
4:25 pm - 4:10 pm
CGN
-
ORD
30h 45m
3 stops
$778Multiple Airlines
Wed, Oct 7 - Sun, Oct 11
Multiple Airlines Logo
7:25 pm - 9:55 pm
ORD
-
CGN
19h 30m
2 stops
Multiple Airlines Logo
8:50 pm - 7:50 pm
CGN
-
ORD
30h 00m
2 stops
$787Multiple Airlines
Fri, Oct 9 - Wed, Oct 14
Multiple Airlines Logo
9:50 pm - 4:55 pm
ORD
-
CGN
12h 05m
1 stop
Multiple Airlines Logo
8:20 pm - 7:52 pm
CGN
-
ORD
30h 32m
2 stops
$791Multiple Airlines
Sun, Nov 1 - Wed, Nov 25
United Airlines Logo
9:50 pm - 4:55 pm
ORD
-
CGN
12h 05m
1 stop
United Airlines Logo
1:35 pm - 6:25 pm
CGN
-
ORD
11h 50m
1 stop
$798United Airlines
Sun, Nov 8 - Thu, Nov 12
United Airlines Logo
9:50 pm - 5:15 pm
ORD
-
CGN
12h 25m
1 stop
United Airlines Logo
1:35 pm - 6:25 pm
CGN
-
ORD
11h 50m
1 stop
$802United Airlines
Sun, Nov 8 - Thu, Nov 12
Multiple Airlines Logo
7:25 pm - 10:50 pm
ORD
-
CGN
20h 25m
3 stops
Multiple Airlines Logo
10:50 pm - 12:40 pm
CGN
-
ORD
20h 50m
2 stops
$814Multiple Airlines
Mon, Sep 14 - Wed, Sep 16
Lufthansa Logo
9:50 pm - 4:55 pm
ORD
-
CGN
12h 05m
1 stop
Lufthansa Logo
1:10 pm - 6:25 pm
CGN
-
ORD
12h 15m
1 stop
$823Lufthansa
Wed, Nov 25 - Sat, Dec 5

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Turkish Airlines flights from Illinois to Cologne

Our best Turkish Airlines deals on Illinois to Cologne flight tickets
Turkish Airlines
Sep 15
ORD11:25 amChicago O'Hare Intl
15h 00m
1 stop
CGN9:25 amCologne Köln/Bonn
Sep 22
CGN7:15 pmCologne Köln/Bonn
21h 25m
1 stop
ORD9:40 amChicago O'Hare Intl
$840
Turkish Airlines
Sep 6
ORD11:25 amChicago O'Hare Intl
15h 00m
1 stop
CGN9:25 amCologne Köln/Bonn
Sep 22
CGN7:15 pmCologne Köln/Bonn
21h 25m
1 stop
ORD9:40 amChicago O'Hare Intl
$846
Turkish Airlines
Oct 13
ORD11:25 amChicago O'Hare Intl
15h 00m
1 stop
CGN9:25 amCologne Köln/Bonn
Oct 28
CGN6:10 pmCologne Köln/Bonn
22h 50m
1 stop
ORD11:00 amChicago O'Hare Intl
$859

Lufthansa flights from Illinois to Cologne

Our best Lufthansa deals on Illinois to Cologne flight tickets
Lufthansa
Nov 1
ORD9:50 pmChicago O'Hare Intl
12h 05m
1 stop
CGN4:55 pmCologne Köln/Bonn
Nov 25
CGN1:10 pmCologne Köln/Bonn
12h 15m
1 stop
ORD6:25 pmChicago O'Hare Intl
$775
Lufthansa
Nov 25
ORD9:50 pmChicago O'Hare Intl
12h 05m
1 stop
CGN4:55 pmCologne Köln/Bonn
Dec 5
CGN1:10 pmCologne Köln/Bonn
12h 15m
1 stop
ORD6:25 pmChicago O'Hare Intl
$823
Lufthansa
Nov 1
ORD9:50 pmChicago O'Hare Intl
12h 05m
1 stop
CGN4:55 pmCologne Köln/Bonn
Nov 8
CGN9:20 amCologne Köln/Bonn
16h 05m
1 stop
ORD6:25 pmChicago O'Hare Intl
$845

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 August 1, 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

Wed 10/7

7:15 pm-1:05 am

2 stops22h 50m

Cologne Köln/Bonn

Sun 10/11

9:40 pm-4:10 pm

2 stops25h 30m

$659

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 9/6

7:25 pm-11:20 pm

2 stops20h 55m

Cologne Köln/Bonn

Tue 9/22

11:15 pm-7:48 pm

3 stops27h 33m

$742

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 11/1

9:50 pm-4:55 pm

1 stop12h 05m

Cologne Köln/Bonn

Wed 11/25

1:10 pm-6:25 pm

1 stop12h 15m

$775

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 10/7

7:15 pm-1:05 am

2 stops22h 50m

Cologne Köln/Bonn

Sun 10/11

4:25 pm-4:10 pm

3 stops30h 45m

$778

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 10/9

7:25 pm-9:55 pm

2 stops19h 30m

Cologne Köln/Bonn

Wed 10/14

8:50 pm-7:50 pm

2 stops30h 00m

$787

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 11/1

9:50 pm-4:55 pm

1 stop12h 05m

Cologne Köln/Bonn

Wed 11/25

8:20 pm-7:52 pm

2 stops30h 32m

$791
Quickest round-trip

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 11/8

9:50 pm-4:55 pm

1 stop12h 05m

Cologne Köln/Bonn

Thu 11/12

1:35 pm-6:25 pm

1 stop11h 50m

$798

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 11/8

9:50 pm-5:15 pm

1 stop12h 25m

Cologne Köln/Bonn

Thu 11/12

1:35 pm-6:25 pm

1 stop11h 50m

$802

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 9/14

7:25 pm-10:50 pm

3 stops20h 25m

Cologne Köln/Bonn

Wed 9/16

10:50 pm-12:40 pm

2 stops20h 50m

$814

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 11/25

9:50 pm-4:55 pm

1 stop12h 05m

Cologne Köln/Bonn

Sat 12/5

1:10 pm-6:25 pm

1 stop12h 15m

$823

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 month to fly to Cologne?

The cheapest month to fly to Cologne from Illinois is in February. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you are unable to visit Cologne during the month of February, then departing from Illinois during the month January is also very affordable. Most momondo users find prices during this month for around $0.

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

12h 05m

Direct flights

None
The fastest flight from Illinois to Cologne takes 12h 05m
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 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.

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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