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.

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

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

$505 Cheap Flights from Cologne to Illinois in 2026

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Find the cheapest flights from Cologne to Illinois

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8:50 pm - 1:20 pm

CGN

ORD

23h 30m

1 stop

9:40 pm - 7:30 pm

ORD

CGN

14h 50m

1 stop

$599Multiple Airlines

Sun, Apr 12 - Sun, Apr 19

1:05 pm - 6:15 pm

CGN

ORD

12h 10m

1 stop

9:40 pm - 7:30 pm

ORD

CGN

14h 50m

1 stop

$601Lufthansa

Mon, Apr 13 - Sun, Apr 19

8:30 am - 8:13 pm

CGN

ORD

18h 43m

2 stops

9:40 pm - 7:30 pm

ORD

CGN

14h 50m

1 stop

$617Lufthansa

Sun, Apr 12 - Sun, Apr 19

8:50 pm - 1:20 pm

CGN

ORD

23h 30m

1 stop

4:20 pm - 7:55 pm

ORD

CGN

20h 35m

1 stop

$677Austrian Airlines

Sun, Apr 12 - Sun, Apr 19

1:05 pm - 2:23 pm

CGN

STL

32h 18m

2 stops

8:00 am - 5:40 pm

STL

CGN

26h 40m

2 stops

$1,021United Airlines

Tue, Aug 4 - Fri, Aug 21

8:30 am - 2:02 pm

CGN

STL

36h 32m

2 stops

12:10 pm - 12:25 pm

STL

CGN

17h 15m

2 stops

$1,084Air Canada

Mon, Aug 3 - Mon, Aug 24

8:30 am - 2:02 pm

CGN

STL

36h 32m

2 stops

8:55 am - 8:55 pm

STL

CGN

29h 00m

2 stops

$1,086Air Canada

Mon, Aug 3 - Thu, Aug 20

1:05 pm - 9:26 pm

CGN

STL

15h 21m

2 stops

6:00 am - 5:20 pm

STL

CGN

28h 20m

2 stops

$1,154United Airlines

Fri, Jul 31 - Wed, Aug 19

2:50 pm - 9:13 pm

CGN

STL

37h 23m

2 stops

7:45 am - 9:25 am

STL

CGN

18h 40m

2 stops

$1,159Turkish Airlines

Mon, Apr 13 - Fri, Apr 17

2:50 pm - 9:13 pm

CGN

STL

37h 23m

2 stops

7:45 am - 9:25 am

STL

CGN

42h 40m

2 stops

$1,207Turkish Airlines

Thu, Apr 16 - Mon, Apr 20

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An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Daily price changes in your inbox - only with Price Alerts.