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Cologne

$325+ Cheap flights from Illinois to Cologne (CGN)

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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Illinois to Cologne

Keep the following information in mind while searching for Illinois to Cologne flight deals. Data was last updated July 3, 2025.

Round-trip from

$536
(Booking.com)

One-way from

$325
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$915
From Illinois to Cologne Köln/Bonn
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One-way flight from Illinois to Cologne Köln/Bonn
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Highest demand for flights based on searches. 7% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Illinois to Cologne

Cheapest flights from Illinois to Cologne
Explore the most affordable flight options available from Illinois to Cologne. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Booking.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/1210:35 pmORD - CGN
1 stop15h 50mBritish Airways
Tue 8/199:15 pmCGN - ORD
1 stop24h 25mBritish Airways
Deal found 7/2$536
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/181:59 pmORD - CGN
2 stops16h 36mAmerican Airlines
Mon 9/2210:50 amCGN - ORD
1 stop13h 10mAmerican Airlines
Deal found 7/1$726
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1611:45 pmORD - CGN
1 stop31h 05mTurkish Airlines
Mon 10/610:30 amCGN - ORD
1 stop18h 30mTurkish Airlines
Deal found 7/2$760
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:25 pmORD - CGN
2 stops17h 10mMultiple Airlines
Tue 8/199:35 amCGN - ORD
3 stops18h 40mMultiple Airlines
Deal found 7/2$798
This Orbitz deal was found by Cheapflights users on 7/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/168:01 pmSTL - CGN
2 stops17h 59mBritish Airways
Wed 8/1310:15 pmCGN - STL
2 stops24h 34mBritish Airways
Deal found 7/2$868
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/164:52 pmSTL - CGN
2 stops21h 08mAmerican Airlines
Sat 8/1610:20 amCGN - STL
2 stops17h 27mAmerican Airlines
Deal found 7/2$1,126
This Expedia deal was found by Cheapflights users on 7/2. 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.
Sat 8/165:30 pmSTL - CGN
2 stops35h 45mLufthansa
Sat 8/237:35 pmCGN - STL
2 stops27h 09mLufthansa
Deal found 7/2$1,134
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:33 amSTL - CGN
3 stops29h 52mMultiple Airlines
Sat 8/237:05 amCGN - STL
2 stops19h 55mMultiple Airlines
Deal found 7/2$1,186
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/48:00 amSTL - CGN
2 stops22h 50mTurkish Airlines
Thu 7/107:10 pmCGN - STL
2 stops27h 37mTurkish Airlines
Deal found 6/30$1,802

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Illinois to Cologne that are best for you.

Fly from

Illinois

Fly to

Cologne

Route

Depart

Return

Price

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 8/12

10:35 pm-9:25 pm

1 stop15h 50m

Cologne Köln/Bonn

Tue 8/19

9:15 pm-2:40 pm

1 stop24h 25m

$536

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 9/18

1:59 pm-1:35 pm

2 stops16h 36m

Cologne Köln/Bonn

Mon 9/22

10:50 am-5:00 pm

1 stop13h 10m

$726

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 8/16

11:45 pm-1:50 pm

1 stop31h 05m

Cologne Köln/Bonn

Mon 10/6

10:30 am-10:00 pm

1 stop18h 30m

$760

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 8/12

7:25 pm-7:35 pm

2 stops17h 10m

Cologne Köln/Bonn

Tue 8/19

9:35 am-9:15 pm

3 stops18h 40m

$798

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 7/16

8:01 pm-9:00 pm

2 stops17h 59m

Cologne Köln/Bonn

Wed 8/13

10:15 pm-3:49 pm

2 stops24h 34m

$868

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 7/16

4:52 pm-9:00 pm

2 stops21h 08m

Cologne Köln/Bonn

Sat 8/16

10:20 am-8:47 pm

2 stops17h 27m

$1,126

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Sat 8/16

5:30 pm-12:15 pm

2 stops35h 45m

Cologne Köln/Bonn

Sat 8/23

7:35 pm-3:44 pm

2 stops27h 09m

$1,134

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Sat 8/16

6:33 am-7:25 pm

3 stops29h 52m

Cologne Köln/Bonn

Sat 8/23

7:05 am-8:00 pm

2 stops19h 55m

$1,186

St. LouisCologne

STL - CGN

STLCGN

Lambert-St Louis

Wed 7/16

6:33 am-1:50 pm

2 stops24h 17m

Cologne Köln/Bonn

Sat 8/16

2:50 pm-10:45 pm

2 stops38h 55m

$2,031

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 8/17

6:00 pm-10:20 pm

3 stops45h 20m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 17 results
1
2

Best time to book a flight from Illinois to Cologne

Have a flexible travel schedule? Discover the best time to fly to Cologne from Illinois 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 Illinois to Cologne

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Cologne (average of $649). Flying from Illinois to Cologne in June is currently the most expensive (average of $1,257). 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.

What is the cheapest time of day to fly from IL to CGN?

Find hourly flight availability from Illinois to Cologne. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Cologne as you normally would.

Reviews of airlines servicing Cologne

Get insights into the airlines that provide service to Cologne. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cologne. Reviews last updated July 3, 2025.
See what other customers who have flown with Austrian Airlines, SWISS, and United Airlines from Illinois to Cologne have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
809 reviews
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.5
Good
1,654 reviews
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,845 reviews
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Turkish Airlines
7.3
Good
3,895 reviews
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
809 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

Find useful and relevant information for your journey from Illinois to Cologne. 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 into for flights to Cologne from Illinois?

    Located just 9.5 mi from the city center, Cologne Köln/Bonn (CGN) is the airport most travelers will use when flying to Cologne from Illinois.

  • What are the cheapest airlines to fly from Illinois to Cologne one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $391. Users have also found prices from $395 and $626 on American Airlines and United Airlines, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Cologne 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 Illinois to Cologne?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Cologne (average of $649). Flying from Illinois to Cologne in June is currently the most expensive (average of $1,257). 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.

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Top 2 airlines flying from Illinois to Cologne

Discover the top 2 airlines that operate flights from Illinois to Cologne. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$739FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$610Average$1,126FlexibilityNo cancel feeOn-time69%

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