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Cheap flights from Illinois to Cologne from $456

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 12/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Cologne

Cheap round-trip flights

British Airways Logo
5:10 pm - 4:10 pmORD-CGN
16h 00m1 stop
British Airways Logo
5:15 pm - 1:50 pmCGN-ORD
27h 35m1 stop
$565British Airways
Find Deal
Mon, Nov 17 - Mon, Nov 24
British Airways Logo
10:12 pm - 4:30 pmORD-CGN
35h 18m2 stops
British Airways Logo
5:15 pm - 1:50 pmCGN-ORD
27h 35m1 stop
$581British Airways
Find Deal
Mon, Nov 17 - Mon, Nov 24
British Airways Logo
5:10 pm - 4:10 pmORD-CGN
16h 00m1 stop
British Airways Logo
12:00 pm - 1:50 pmCGN-ORD
32h 50m1 stop
$593British Airways
Find Deal
Mon, Nov 10 - Wed, Nov 26
Multiple Airlines Logo
3:35 pm - 5:20 pmORD-CGN
18h 45m2 stops
Multiple Airlines Logo
7:35 pm - 4:20 pmCGN-ORD
27h 45m2 stops
$656Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Dec 1
Multiple Airlines Logo
10:00 am - 5:20 pmORD-CGN
24h 20m3 stops
Multiple Airlines Logo
7:35 pm - 4:20 pmCGN-ORD
27h 45m2 stops
$663Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Dec 1
American Airlines Logo
4:06 pm - 4:10 pmORD-CGN
17h 04m2 stops
American Airlines Logo
12:00 pm - 5:00 pmCGN-ORD
12h 00m1 stop
$726American Airlines
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Mon, Nov 10 - Wed, Nov 26
Turkish Airlines Logo
11:50 am - 10:35 amORD-CGN
15h 45m1 stop
Turkish Airlines Logo
11:35 am - 10:05 amCGN-ORD
29h 30m1 stop
$760Turkish Airlines
Find Deal
Thu, Nov 20 - Mon, Dec 1
American Airlines Logo
2:51 pm - 4:30 pmORD-CGN
18h 39m2 stops
American Airlines Logo
11:45 am - 2:00 pmCGN-ORD
33h 15m2 stops
$807American Airlines
Find Deal
Sun, Dec 14 - Tue, Dec 30
Turkish Airlines Logo
12:50 pm - 5:15 pmORD-CGN
22h 25m1 stop
Turkish Airlines Logo
11:35 am - 10:05 amCGN-ORD
29h 30m1 stop
$856Turkish Airlines
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Sat, Nov 1 - Sat, Nov 8
United Airlines Logo
3:14 pm - 12:30 pmSTL-CGN
15h 16m2 stops
United Airlines Logo
9:10 am - 3:29 pmCGN-STL
37h 19m2 stops
$1,135United Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8

Turkish Airlines flights from Illinois to Cologne

Our best Turkish Airlines deals on Illinois to Cologne flight tickets
Turkish Airlines
Nov 20
ORD11:50 amChicago O'Hare Intl
15h 45m
1 stop
CGN10:35 amCologne Köln/Bonn
Dec 1
CGN11:35 amCologne Köln/Bonn
29h 30m
1 stop
ORD10:05 amChicago O'Hare Intl
$760
Find similar
Turkish Airlines
Nov 1
ORD12:50 pmChicago O'Hare Intl
22h 25m
1 stop
CGN5:15 pmCologne Köln/Bonn
Nov 8
CGN11:35 amCologne Köln/Bonn
29h 30m
1 stop
ORD10:05 amChicago O'Hare Intl
$856
Find similar
Turkish Airlines
Oct 18
ORD11:45 pmChicago O'Hare Intl
26h 45m
1 stop
CGN9:30 amCologne Köln/Bonn
Oct 25
CGN7:10 pmCologne Köln/Bonn
31h 15m
1 stop
ORD7:25 pmChicago O'Hare Intl
$868
Find similar

British Airways flights from Illinois to Cologne

Our best British Airways deals on Illinois to Cologne flight tickets
British Airways
Nov 17
ORD5:10 pmChicago O'Hare Intl
16h 00m
1 stop
CGN4:10 pmCologne Köln/Bonn
Nov 24
CGN5:15 pmCologne Köln/Bonn
27h 35m
1 stop
ORD1:50 pmChicago O'Hare Intl
$565
Find similar
British Airways
Nov 17
ORD10:12 pmChicago O'Hare Intl
35h 18m
2 stops
CGN4:30 pmCologne Köln/Bonn
Nov 24
CGN5:15 pmCologne Köln/Bonn
27h 35m
1 stop
ORD1:50 pmChicago O'Hare Intl
$581
Find similar
British Airways
Nov 10
ORD5:10 pmChicago O'Hare Intl
16h 00m
1 stop
CGN4:10 pmCologne Köln/Bonn
Nov 26
CGN12:00 pmCologne Köln/Bonn
32h 50m
1 stop
ORD1:50 pmChicago O'Hare Intl
$593
Find similar

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 September 19, 2025.
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

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 11/17

5:10 pm-4:10 pm

1 stop16h 00m

Cologne Köln/Bonn

Mon 11/24

5:15 pm-1:50 pm

1 stop27h 35m

$565

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 11/17

10:12 pm-4:30 pm

2 stops35h 18m

Cologne Köln/Bonn

Mon 11/24

5:15 pm-1:50 pm

1 stop27h 35m

$581

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 11/10

5:10 pm-4:10 pm

1 stop16h 00m

Cologne Köln/Bonn

Wed 11/26

12:00 pm-1:50 pm

1 stop32h 50m

$593

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 11/20

3:35 pm-5:20 pm

2 stops18h 45m

Cologne Köln/Bonn

Mon 12/1

7:35 pm-4:20 pm

2 stops27h 45m

$656

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 11/20

10:00 am-5:20 pm

3 stops24h 20m

Cologne Köln/Bonn

Mon 12/1

7:35 pm-4:20 pm

2 stops27h 45m

$663

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 11/10

4:06 pm-4:10 pm

2 stops17h 04m

Cologne Köln/Bonn

Wed 11/26

12:00 pm-5:00 pm

1 stop12h 00m

$726

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 11/20

11:50 am-10:35 am

1 stop15h 45m

Cologne Köln/Bonn

Mon 12/1

11:35 am-10:05 am

1 stop29h 30m

$760

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 12/14

2:51 pm-4:30 pm

2 stops18h 39m

Cologne Köln/Bonn

Tue 12/30

11:45 am-2:00 pm

2 stops33h 15m

$807

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 11/1

12:50 pm-5:15 pm

1 stop22h 25m

Cologne Köln/Bonn

Sat 11/8

11:35 am-10:05 am

1 stop29h 30m

$856

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Sat 11/1

3:14 pm-12:30 pm

2 stops15h 16m

Cologne Köln/Bonn

Sat 11/8

9:10 am-3:29 pm

2 stops37h 19m

$1,135

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 $579, 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 March is also very affordable. Most momondo users find prices during this month for around $643.

What is the cheapest day to depart on your flight to Cologne?

The cheapest day to depart from Illinois to Cologne is on a Thursday when prices can be found for as low as $872. On the other hand, Monday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,547.

What is the cheapest time of day to depart on your flight to Cologne?

The cheapest time of day to fly to Cologne is in the morning when flights can be purchased for as low as $879. In the afternoon is when there is more demand to fly to Cologne, so prices are often more expensive at around $1,181 per ticket.

Cheap Illinois to Cologne flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Cologne. There are no popular flight routes from Illinois to Cologne.
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  • 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 many operators does momondo search for flights from Illinois to Cologne Köln/Bonn Airport?

  • 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.

Best airlines flying from Illinois to Cologne

Compare and see reviews for airlines that fly from Illinois to Cologne with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $560Free CancellationRating
6.7
7,373 reviews
Search British Airways flights

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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