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$319+ Cheap flights from Cologne (CGN) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
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Cheap flight deals from Cologne to Illinois

Cheapest flights from Cologne to Illinois
Explore the most affordable flight options available from Cologne to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 29, 2026.

This Billigflug deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/11:00 pm
CGN
-
ORD
1 stop12h 15m
Multiple Airlines
mié. 7/12:15 pm
ORD
-
CGN
2 stops15h 05m
Multiple Airlines
Deal found 1/28$562
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/11:00 pm
CGN
-
ORD
2 stops29h 26m
United Airlines
mié. 7/14:00 pm
ORD
-
CGN
2 stops18h 20m
United Airlines
Deal found 1/28$577
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/198:20 pm
CGN
-
ORD
1 stop24h 40m
Multiple Airlines
lun. 2/239:50 pm
ORD
-
CGN
1 stop12h 20m
Multiple Airlines
Deal found 1/27$586
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/195:05 pm
CGN
-
ORD
1 stop29h 20m
British Airways
lun. 2/239:45 pm
ORD
-
CGN
1 stop11h 25m
British Airways
Deal found 1/27$604
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/245:05 pm
CGN
-
STL
2 stops37h 17m
British Airways
jue. 3/196:50 pm
STL
-
CGN
2 stops14h 50m
British Airways
Deal found 1/27$614
This Booking.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/79:10 am
CGN
-
ORD
1 stop16h 15m
Lufthansa
mié. 2/119:50 pm
ORD
-
CGN
1 stop14h 05m
Lufthansa
Deal found 1/28$615
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/195:05 pm
CGN
-
STL
2 stops55h 08m
British Airways
lun. 2/236:36 pm
STL
-
CGN
2 stops38h 54m
British Airways
Deal found 1/27$617
This Lufthansa deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/149:10 am
CGN
-
ORD
1 stop12h 00m
Lufthansa
mié. 2/186:00 pm
ORD
-
CGN
1 stop11h 50m
Lufthansa
Deal found 1/28$617
This Expedia deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/196:45 am
CGN
-
ORD
2 stops20h 25m
Air Canada
lun. 2/237:15 am
ORD
-
CGN
2 stops21h 55m
Air Canada
Deal found 1/27$624
This Billigflug deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/79:10 am
CGN
-
ORD
1 stop12h 00m
Multiple Airlines
mié. 2/112:00 pm
ORD
-
CGN
2 stops15h 10m
Multiple Airlines
Deal found 1/28$629
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/255:15 pm
CGN
-
STL
2 stops30h 58m
British Airways
mar. 3/176:08 pm
STL
-
CGN
2 stops16h 22m
British Airways
Deal found 1/27$637
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/261:35 pm
CGN
-
STL
2 stops17h 24m
United Airlines
mar. 3/247:00 pm
STL
-
CGN
2 stops16h 10m
United Airlines
Deal found 1/27$688

Find flight deals from Cologne to Illinois

Keep the following information in mind while searching for Cologne to Illinois flight deals. Data was last updated enero 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$562
(Billigflug)

One-way from

$319
(Kiwi.com)

Popular in

May

Cheapest in

February
Provider with most accurate pricing for Cologne Köln/Bonn-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Chicago (CHI) flights.
Search Deals
From Cologne Köln/Bonn to Illinois
Search Deals
One-way flight from Cologne Köln/Bonn to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cologne to Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated enero 29, 2026.
Use the filters below to find and compare flights from Cologne to Illinois that are best for you.

Fly from

Cologne

Fly to

Illinois

Route

Depart

Return

Price

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

vie. 5/1

1:00 pm-11:26 am

2 stops29h 26m

Chicago O'Hare Intl

mié. 7/1

4:00 pm-5:20 pm

2 stops18h 20m

$577

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

jue. 2/19

8:20 pm-2:00 pm

1 stop24h 40m

Chicago O'Hare Intl

lun. 2/23

9:50 pm-5:10 pm

1 stop12h 20m

$586

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

jue. 2/19

5:05 pm-3:25 pm

1 stop29h 20m

Chicago O'Hare Intl

lun. 2/23

9:45 pm-4:10 pm

1 stop11h 25m

$604

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

jue. 2/19

5:05 pm-8:55 am

2 stops46h 50m

Lambert-St Louis

lun. 2/23

6:18 pm-4:10 pm

2 stops14h 52m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

mar. 2/24

5:05 pm-11:22 pm

2 stops37h 17m

Lambert-St Louis

mar. 3/17

11:59 am-4:30 pm

2 stops22h 31m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

dom. 3/1

4:35 pm-11:22 pm

2 stops37h 47m

Lambert-St Louis

lun. 3/16

6:57 pm-4:10 pm

2 stops15h 13m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

dom. 3/1

4:35 pm-9:12 pm

2 stops35h 37m

Lambert-St Louis

dom. 3/22

9:35 am-4:30 pm

2 stops24h 55m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

dom. 3/1

4:35 pm-11:22 pm

2 stops37h 47m

Lambert-St Louis

jue. 3/19

6:50 pm-3:40 pm

2 stops14h 50m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

dom. 3/1

4:35 pm-7:30 pm

2 stops33h 55m

Lambert-St Louis

lun. 3/23

1:34 pm-4:10 pm

2 stops20h 36m

$614

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

dom. 3/1

4:35 pm-11:04 pm

2 stops37h 29m

Lambert-St Louis

mar. 3/17

11:46 am-4:30 pm

2 stops22h 44m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 24 results
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Best time to book a flight from Cologne to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Cologne with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cologne to Illinois

What is the cheapest month to book a flight from Cologne to Illinois?

Currently, February is the cheapest month in which you can book a flight from Cologne to Illinois (average of $344). Flying from Cologne to Illinois in January is currently the most expensive (average of $552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Cologne to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cologne to Illinois?

    Cologne Köln/Bonn (CGN), located 9.5 mi from the city center, is the airport you fly out of when you book flights from Cologne to Illinois.

  • How long is the flight from Cologne to Illinois?

    There are many flights that can get you from Cologne to Illinois in 29h 20m. Fly via United Airlines or British Airways to get the fastest option. The distance from Cologne to Illinois is about 4244 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Cologne to Illinois that include hotel bookings?

    Yes. In addition to deals on Cologne to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Cologne to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cologne to Illinois.

  • Can I find deals for business class flights from Cologne to Illinois?

    Yes. Cheapflights offers flight deals from Cologne to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cologne to Illinois?

    Currently, February is the cheapest month in which you can book a flight from Cologne to Illinois (average of $344). Flying from Cologne to Illinois in January is currently the most expensive (average of $552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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