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

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

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

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 Cologne Köln/Bonn Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois 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 Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$425 Cheap Flights from Cologne to Illinois in 2026

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Find the cheapest flights from Cologne to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 pm - 1:20 pm

CGN

ORD

23h 40m

1 stop

6:00 pm - 7:30 pm

ORD

CGN

18h 30m

1 stop

$685Multiple Airlines

Mon, Jun 15 - Sun, Jun 21

8:40 pm - 1:20 pm

CGN

ORD

23h 40m

1 stop

6:00 pm - 12:25 pm

ORD

CGN

11h 25m

1 stop

$688Multiple Airlines

Mon, Jun 15 - Sun, Jun 21

8:30 am - 2:00 pm

CGN

ORD

12h 30m

1 stop

6:00 pm - 7:30 pm

ORD

CGN

18h 30m

1 stop

$689Lufthansa

Sun, Jun 7 - Mon, Jun 15

8:40 pm - 1:20 pm

CGN

ORD

23h 40m

1 stop

9:40 pm - 5:20 pm

ORD

CGN

12h 40m

1 stop

$691Multiple Airlines

Wed, Sep 23 - Wed, Oct 7

8:10 pm - 12:35 pm

CGN

ORD

23h 25m

1 stop

3:35 pm - 7:30 pm

ORD

CGN

20h 55m

1 stop

$696Lufthansa

Thu, Aug 20 - Sun, Aug 23

8:40 pm - 1:20 pm

CGN

ORD

23h 40m

1 stop

4:20 pm - 8:50 am

ORD

CGN

33h 30m

1 stop

$698Austrian Airlines

Mon, Jun 8 - Sun, Jun 14

1:05 pm - 6:15 pm

CGN

ORD

12h 10m

1 stop

10:50 am - 12:25 pm

ORD

CGN

18h 35m

2 stops

$707United Airlines

Fri, Sep 4 - Sun, Sep 20

6:20 am - 6:41 pm

CGN

STL

19h 21m

2 stops

12:10 pm - 12:25 pm

STL

CGN

17h 15m

2 stops

$1,546Air Canada

Thu, Oct 8 - Sun, Oct 11

6:20 am - 6:41 pm

CGN

STL

19h 21m

2 stops

12:10 pm - 12:25 pm

STL

CGN

17h 15m

2 stops

$1,547Air Canada

Thu, Oct 8 - Sun, Oct 11

1:05 pm - 9:09 pm

CGN

STL

15h 04m

2 stops

6:49 pm - 5:40 pm

STL

CGN

15h 51m

2 stops

$3,951United Airlines

Fri, Oct 2 - Fri, Oct 9

Lufthansa flights from Cologne to Illinois

Our best Lufthansa deals on Cologne to Illinois flight tickets

Lufthansa

Jun 7

CGN8:30 amCologne Köln/Bonn

12h 30m

1 stop

ORD2:00 pmChicago O'Hare Intl

Jun 15

ORD6:00 pmChicago O'Hare Intl

18h 30m

1 stop

CGN7:30 pmCologne Köln/Bonn

$689

Lufthansa

Aug 20

CGN8:10 pmCologne Köln/Bonn

23h 25m

1 stop

ORD12:35 pmChicago O'Hare Intl

Aug 23

ORD3:35 pmChicago O'Hare Intl

20h 55m

1 stop

CGN7:30 pmCologne Köln/Bonn

$696

Lufthansa

Jun 7

CGN8:30 amCologne Köln/Bonn

16h 45m

1 stop

ORD6:15 pmChicago O'Hare Intl

Jun 14

ORD9:40 pmChicago O'Hare Intl

14h 50m

1 stop

CGN7:30 pmCologne Köln/Bonn

$706

United Airlines flights from Cologne to Illinois

Our best United Airlines deals on Cologne to Illinois flight tickets

United Airlines

Sep 4

CGN1:05 pmCologne Köln/Bonn

12h 10m

1 stop

ORD6:15 pmChicago O'Hare Intl

Sep 20

ORD10:50 amChicago O'Hare Intl

18h 35m

2 stops

CGN12:25 pmCologne Köln/Bonn

$707

United Airlines

Jun 15

CGN1:05 pmCologne Köln/Bonn

27h 31m

2 stops

ORD9:36 amChicago O'Hare Intl

Jun 21

ORD8:40 pmChicago O'Hare Intl

37h 40m

2 stops

CGN5:20 pmCologne Köln/Bonn

$779

United Airlines

Jul 25

CGN8:30 amCologne Köln/Bonn

12h 30m

1 stop

ORD2:00 pmChicago O'Hare Intl

Aug 21

ORD6:00 pmChicago O'Hare Intl

16h 40m

1 stop

CGN5:40 pmCologne Köln/Bonn

$911

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Mon 6/15

8:40 pm-1:20 pm

1 stop23h 40m

Chicago O'Hare Intl

Sun 6/21

6:00 pm-7:30 pm

1 stop18h 30m

$685

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Mon 6/15

8:40 pm-1:20 pm

1 stop23h 40m

Chicago O'Hare Intl

Sun 6/21

6:00 pm-12:25 pm

1 stop11h 25m

$688

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sun 6/7

8:30 am-2:00 pm

1 stop12h 30m

Chicago O'Hare Intl

Mon 6/15

6:00 pm-7:30 pm

1 stop18h 30m

$689

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 9/23

8:40 pm-1:20 pm

1 stop23h 40m

Chicago O'Hare Intl

Wed 10/7

9:40 pm-5:20 pm

1 stop12h 40m

$691

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 8/20

8:10 pm-12:35 pm

1 stop23h 25m

Chicago O'Hare Intl

Sun 8/23

3:35 pm-7:30 pm

1 stop20h 55m

$696

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Mon 6/8

8:40 pm-1:20 pm

1 stop23h 40m

Chicago O'Hare Intl

Sun 6/14

4:20 pm-8:50 am

1 stop33h 30m

$698

Quickest round-trip

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Fri 9/4

1:05 pm-6:15 pm

1 stop12h 10m

Chicago O'Hare Intl

Sun 9/20

10:50 am-12:25 pm

2 stops18h 35m

$707

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Thu 10/8

6:20 am-6:41 pm

2 stops19h 21m

Lambert-St Louis

Sun 10/11

12:10 pm-12:25 pm

2 stops17h 15m

$1,546

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Thu 10/8

6:20 am-6:41 pm

2 stops19h 21m

Lambert-St Louis

Sun 10/11

12:10 pm-12:25 pm

2 stops17h 15m

$1,547

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Fri 10/2

1:05 pm-9:09 pm

2 stops15h 04m

Lambert-St Louis

Fri 10/9

6:49 pm-5:40 pm

2 stops15h 51m

$3,951

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Cologne to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Cologne is in January. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $478.

Can stopping save me money on Cologne to Illinois flights?

You could potentially save up to 8% on your flight if you consider stops on a Cologne to Illinois flight.

Cheap Cologne to Illinois flight deals and tips

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

Fastest flight time	12h 10m
Direct flights	None

The fastest flight from Cologne to Illinois takes 12h 10m

There are no direct flights from Cologne to Illinois. There are no popular flight routes from Cologne to Illinois.

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Frequently asked questions about flying from Cologne to Illinois

When did momondo last update prices for flights from Cologne Köln/Bonn Airport to Illinois?
Prices for flights from Cologne Köln/Bonn Airport to Illinois are refreshed on a daily basis.
How old do you have to be to fly from Cologne Köln/Bonn Airport to Illinois?
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 Cologne Köln/Bonn Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois 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 Illinois. 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 Cologne to Illinois?

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

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

All flight searches from Cologne to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Cologne to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Cologne and alert you when they change.