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Cheap flights from Illinois to Cologne from $284

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 10/22. 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
0 bags

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Find the cheapest flights from Illinois to Cologne

Cheap round-trip flights

British Airways Logo
10:35 pm - 9:10 amORD-CGN
27h 35m1 stop
British Airways Logo
9:15 pm - 11:50 amCGN-ORD
21h 35m1 stop
$564British Airways
Find Deal
Tue, Oct 7 - Mon, Oct 13
British Airways Logo
1:43 pm - 9:25 pmORD-CGN
24h 42m2 stops
British Airways Logo
9:15 pm - 11:50 amCGN-ORD
21h 35m1 stop
$568British Airways
Find Deal
Tue, Oct 7 - Mon, Oct 13
British Airways Logo
1:43 pm - 9:25 pmORD-CGN
24h 42m2 stops
British Airways Logo
9:15 pm - 4:13 pmCGN-ORD
25h 58m2 stops
$578British Airways
Find Deal
Tue, Oct 7 - Mon, Oct 13
British Airways Logo
10:35 pm - 8:25 pmORD-CGN
14h 50m1 stop
British Airways Logo
10:15 pm - 11:50 amCGN-ORD
20h 35m1 stop
$593British Airways
Find Deal
Sun, Aug 31 - Wed, Sep 10
Logo
7:25 pm - 10:20 pmORD-CGN
19h 55m2 stops
Logo
1:35 pm - 6:15 pmCGN-ORD
35h 40m2 stops
$727
Find Deal
Sun, Sep 21 - Sun, Sep 28
Logo
7:25 pm - 5:05 pmORD-CGN
14h 40m2 stops
Logo
1:35 pm - 6:15 pmCGN-ORD
35h 40m2 stops
$747
Find Deal
Wed, Sep 24 - Sun, Sep 28
Turkish Airlines Logo
11:45 pm - 6:10 pmORD-CGN
35h 25m1 stop
Turkish Airlines Logo
7:10 pm - 9:40 amCGN-ORD
21h 30m1 stop
$781Turkish Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 22
Turkish Airlines Logo
11:45 pm - 9:30 amORD-CGN
26h 45m1 stop
Turkish Airlines Logo
2:50 pm - 9:40 amCGN-ORD
25h 50m1 stop
$789Turkish Airlines
Find Deal
Wed, Aug 20 - Thu, Aug 28
American Airlines Logo
3:21 pm - 9:25 pmORD-CGN
23h 04m2 stops
American Airlines Logo
3:30 pm - 5:00 pmCGN-ORD
32h 30m1 stop
$848American Airlines
Find Deal
Tue, Aug 19 - Tue, Sep 9
American Airlines Logo
3:21 pm - 9:25 pmORD-CGN
23h 04m2 stops
American Airlines Logo
3:30 pm - 9:15 amCGN-ORD
24h 45m2 stops
$858American Airlines
Find Deal
Tue, Aug 19 - Tue, Sep 9

Turkish Airlines flights from Illinois to Cologne

Our best Turkish Airlines deals on Illinois to Cologne flight tickets
Turkish Airlines
Sep 8
ORD11:45 pmChicago O'Hare Intl
35h 25m
1 stop
CGN6:10 pmCologne Köln/Bonn
Sep 22
CGN7:10 pmCologne Köln/Bonn
21h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$781
Find similar
Turkish Airlines
Aug 20
ORD11:45 pmChicago O'Hare Intl
26h 45m
1 stop
CGN9:30 amCologne Köln/Bonn
Aug 28
CGN2:50 pmCologne Köln/Bonn
25h 50m
1 stop
ORD9:40 amChicago O'Hare Intl
$789
Find similar
Turkish Airlines
Aug 27
ORD11:45 pmChicago O'Hare Intl
35h 25m
1 stop
CGN6:10 pmCologne Köln/Bonn
Aug 31
CGN7:10 pmCologne Köln/Bonn
33h 50m
1 stop
ORD10:00 pmChicago O'Hare Intl
$843
Find similar

British Airways flights from Illinois to Cologne

Our best British Airways deals on Illinois to Cologne flight tickets
British Airways
Oct 7
ORD10:35 pmChicago O'Hare Intl
27h 35m
1 stop
CGN9:10 amCologne Köln/Bonn
Oct 13
CGN9:15 pmCologne Köln/Bonn
21h 35m
1 stop
ORD11:50 amChicago O'Hare Intl
$564
Find similar
British Airways
Oct 7
ORD1:43 pmChicago O'Hare Intl
24h 42m
2 stops
CGN9:25 pmCologne Köln/Bonn
Oct 13
CGN9:15 pmCologne Köln/Bonn
21h 35m
1 stop
ORD11:50 amChicago O'Hare Intl
$568
Find similar
British Airways
Oct 7
ORD1:43 pmChicago O'Hare Intl
24h 42m
2 stops
CGN9:25 pmCologne Köln/Bonn
Oct 13
CGN9:15 pmCologne Köln/Bonn
25h 58m
2 stops
ORD4:13 pmChicago O'Hare Intl
$578
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 August 7, 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

Tue 10/7

10:35 pm-9:10 am

1 stop27h 35m

Cologne Köln/Bonn

Mon 10/13

9:15 pm-11:50 am

1 stop21h 35m

$564

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 10/7

1:43 pm-9:25 pm

2 stops24h 42m

Cologne Köln/Bonn

Mon 10/13

9:15 pm-11:50 am

1 stop21h 35m

$568

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 10/7

1:43 pm-9:25 pm

2 stops24h 42m

Cologne Köln/Bonn

Mon 10/13

9:15 pm-4:13 pm

2 stops25h 58m

$578

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 8/31

10:35 pm-8:25 pm

1 stop14h 50m

Cologne Köln/Bonn

Wed 9/10

10:15 pm-11:50 am

1 stop20h 35m

$593

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 9/21

7:25 pm-10:20 pm

2 stops19h 55m

Cologne Köln/Bonn

Sun 9/28

1:35 pm-6:15 pm

2 stops35h 40m

$727

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 9/24

7:25 pm-5:05 pm

2 stops14h 40m

Cologne Köln/Bonn

Sun 9/28

1:35 pm-6:15 pm

2 stops35h 40m

$747

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 9/8

11:45 pm-6:10 pm

1 stop35h 25m

Cologne Köln/Bonn

Mon 9/22

7:10 pm-9:40 am

1 stop21h 30m

$781

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 8/20

11:45 pm-9:30 am

1 stop26h 45m

Cologne Köln/Bonn

Thu 8/28

2:50 pm-9:40 am

1 stop25h 50m

$789

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 8/19

3:21 pm-9:25 pm

2 stops23h 04m

Cologne Köln/Bonn

Tue 9/9

3:30 pm-5:00 pm

1 stop32h 30m

$848

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 8/19

3:21 pm-9:25 pm

2 stops23h 04m

Cologne Köln/Bonn

Tue 9/9

3:30 pm-9:15 am

2 stops24h 45m

$858

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 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

Best Price Found

$284

Fastest flight time

11h 25m

Direct flights

None

Airports in Cologne

1 airport
The best one-way flight to Cologne from Illinois in the past 72 hours is $284. The best round-trip flight deal from Illinois to Cologne found on momondo in the last 72 hours is $564.
The fastest flight from Illinois to Cologne takes 11h 25m
There are no direct flights from Illinois to Cologne. Popular non-direct routes for this connection are Lambert-St Louis Airport - Cologne Köln/Bonn Airport and Chicago O'Hare Intl Airport - Cologne Köln/Bonn Airport.
There is 1 airport near Cologne: Cologne Köln/Bonn (CGN)
Search flight deals

  • 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
6.6
7,245 reviews
Search British Airways flights
United AirlinesPriceFrom $594Free CancellationRating
7.4
8,917 reviews
Search United Airlines 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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