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Cheap flights from Illinois to Cologne from $363

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 8/24. 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.
Lufthansa Logo
9:50 pm - 5:15 pm
ORD
-
CGN
12h 25m
1 stop
Lufthansa Logo
1:20 pm - 6:25 pm
CGN
-
ORD
12h 05m
1 stop
$851Lufthansa
Wed, Nov 4 - Wed, Nov 18
Lufthansa Logo
9:50 pm - 7:15 pm
ORD
-
CGN
14h 25m
1 stop
Lufthansa Logo
9:10 am - 9:13 pm
CGN
-
ORD
19h 03m
2 stops
$863Lufthansa
Wed, Nov 4 - Wed, Nov 18
Multiple Airlines Logo
7:15 am - 12:50 pm
ORD
-
CGN
22h 35m
2 stops
Multiple Airlines Logo
1:20 pm - 11:10 am
CGN
-
ORD
28h 50m
2 stops
$874Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
Turkish Airlines Logo
11:25 am - 9:25 am
ORD
-
CGN
15h 00m
1 stop
Turkish Airlines Logo
11:30 am - 7:20 pm
CGN
-
ORD
37h 50m
1 stop
$885Turkish Airlines
Wed, Oct 14 - Wed, Oct 28
Multiple Airlines Logo
9:00 pm - 10:30 pm
ORD
-
CGN
18h 30m
1 stop
Multiple Airlines Logo
10:00 pm - 7:15 pm
CGN
-
ORD
28h 15m
2 stops
$894Multiple Airlines
Thu, Sep 3 - Mon, Sep 7
Turkish Airlines Logo
11:25 am - 9:25 am
ORD
-
CGN
15h 00m
1 stop
Turkish Airlines Logo
10:25 am - 9:40 am
CGN
-
ORD
30h 15m
1 stop
$932Turkish Airlines
Thu, Sep 3 - Mon, Sep 7
Lufthansa Logo
3:35 pm - 5:20 pm
ORD
-
CGN
18h 45m
1 stop
Lufthansa Logo
8:30 am - 6:15 pm
CGN
-
ORD
16h 45m
1 stop
$945Lufthansa
Wed, Aug 5 - Fri, Aug 14
Lufthansa Logo
3:35 pm - 7:30 pm
ORD
-
CGN
20h 55m
1 stop
Lufthansa Logo
8:30 am - 9:30 pm
CGN
-
ORD
20h 00m
2 stops
$955Lufthansa
Wed, Aug 5 - Fri, Aug 14
United Airlines Logo
8:55 am - 12:25 pm
STL
-
CGN
20h 30m
2 stops
United Airlines Logo
8:30 am - 8:07 pm
CGN
-
STL
18h 37m
2 stops
$1,076United Airlines
Wed, Jul 1 - Tue, Jul 7
Air Canada Logo
8:55 am - 5:40 pm
STL
-
CGN
25h 45m
2 stops
Air Canada Logo
8:30 am - 6:41 pm
CGN
-
STL
41h 11m
2 stops
$1,257Air Canada
Fri, Sep 4 - Sun, Sep 13

Air Canada flights from Illinois to Cologne

Our best Air Canada deals on Illinois to Cologne flight tickets
Air Canada
Aug 5
ORD3:40 pmChicago O'Hare Intl
18h 40m
2 stops
CGN5:20 pmCologne Köln/Bonn
Aug 14
CGN1:05 pmCologne Köln/Bonn
16h 00m
2 stops
ORD10:05 pmChicago O'Hare Intl
$975
Air Canada
Oct 14
ORD3:45 pmChicago O'Hare Intl
13h 40m
2 stops
CGN12:25 pmCologne Köln/Bonn
Oct 28
CGN9:10 amCologne Köln/Bonn
35h 45m
2 stops
ORD2:55 pmChicago O'Hare Intl
$991
Air Canada
Jul 14
ORD2:08 pmChicago O'Hare Intl
20h 12m
2 stops
CGN5:20 pmCologne Köln/Bonn
Jul 21
CGN8:30 amCologne Köln/Bonn
30h 20m
2 stops
ORD7:50 amChicago O'Hare Intl
$1,027

United Airlines flights from Illinois to Cologne

Our best United Airlines deals on Illinois to Cologne flight tickets
United Airlines
Jul 14
ORD2:25 pmChicago O'Hare Intl
15h 00m
2 stops
CGN12:25 pmCologne Köln/Bonn
Jul 21
CGN8:30 amCologne Köln/Bonn
16h 45m
1 stop
ORD6:15 pmChicago O'Hare Intl
$1,024
United Airlines
Jul 7
ORD9:40 pmChicago O'Hare Intl
12h 40m
1 stop
CGN5:20 pmCologne Köln/Bonn
Jul 31
CGN1:05 pmCologne Köln/Bonn
16h 10m
2 stops
ORD10:15 pmChicago O'Hare Intl
$1,070
United Airlines
Jul 7
ORD1:55 pmChicago O'Hare Intl
15h 30m
2 stops
CGN12:25 pmCologne Köln/Bonn
Jul 31
CGN1:05 pmCologne Köln/Bonn
17h 26m
2 stops
ORD11:31 pmChicago O'Hare Intl
$1,074

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 June 5, 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
Quickest round-trip

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 11/4

9:50 pm-5:15 pm

1 stop12h 25m

Cologne Köln/Bonn

Wed 11/18

1:20 pm-6:25 pm

1 stop12h 05m

$851

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 11/4

9:50 pm-7:15 pm

1 stop14h 25m

Cologne Köln/Bonn

Wed 11/18

9:10 am-9:13 pm

2 stops19h 03m

$863

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 11/4

7:15 am-12:50 pm

2 stops22h 35m

Cologne Köln/Bonn

Wed 11/18

1:20 pm-11:10 am

2 stops28h 50m

$874

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 10/14

11:25 am-9:25 am

1 stop15h 00m

Cologne Köln/Bonn

Wed 10/28

11:30 am-7:20 pm

1 stop37h 50m

$885

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 9/3

9:00 pm-10:30 pm

1 stop18h 30m

Cologne Köln/Bonn

Mon 9/7

10:00 pm-7:15 pm

2 stops28h 15m

$894

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 9/3

11:25 am-9:25 am

1 stop15h 00m

Cologne Köln/Bonn

Mon 9/7

10:25 am-9:40 am

1 stop30h 15m

$932

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 8/5

3:35 pm-5:20 pm

1 stop18h 45m

Cologne Köln/Bonn

Fri 8/14

8:30 am-6:15 pm

1 stop16h 45m

$945

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 8/5

3:35 pm-7:30 pm

1 stop20h 55m

Cologne Köln/Bonn

Fri 8/14

8:30 am-9:30 pm

2 stops20h 00m

$955

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 7/1

8:55 am-12:25 pm

2 stops20h 30m

Cologne Köln/Bonn

Tue 7/7

8:30 am-8:07 pm

2 stops18h 37m

$1,076

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Fri 9/4

8:55 am-5:40 pm

2 stops25h 45m

Cologne Köln/Bonn

Sun 9/13

8:30 am-6:41 pm

2 stops41h 11m

$1,257

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 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 33% of people opting to fly with this airline when traveling to Cologne. Keep in mind that there are 9 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

12h 25m

Direct flights

None
The fastest flight from Illinois to Cologne takes 12h 25m
There are no direct flights from Illinois to Cologne. There are no popular flight routes from Illinois to Cologne.
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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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