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Cologne

$508+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$598
(American Airlines)

One-way from

$508
(Cheapflightsfares)

Popular in

June

Cheapest in

February

Average price

$784
Provider with most accurate pricing for Chicago (CHI)-Cologne Köln/Bonn flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Cologne Köln/Bonn flights.
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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 ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/318:35 pmORD - CGN
1 stop16h 50mMultiple Airlines
Wed 9/1010:15 pmCGN - ORD
1 stop24h 40mMultiple Airlines
Deal found 4/30$598
This British Airways deal was found by Cheapflights users on 5/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/314:55 pmORD - CGN
1 stop20h 30mBritish Airways
Wed 9/1010:15 pmCGN - ORD
1 stop22h 40mBritish Airways
Deal found 5/1$599
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/510:25 pmORD - CGN
1 stop15h 05mAmerican Airlines
Tue 5/203:30 pmCGN - ORD
1 stop27h 15mAmerican Airlines
Deal found 4/30$648
This oojo deal was found by Cheapflights users on 5/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:55 amORD - CGN
1 stop15h 50mTurkish Airlines
Wed 11/196:15 pmCGN - ORD
1 stop31h 10mTurkish Airlines
Deal found 5/1$721
This Justfly.com deal was found by Cheapflights users on 5/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/12:00 pmORD - CGN
2 stops14h 10mAir Canada
Fri 8/156:20 amCGN - ORD
2 stops18h 55mAir Canada
Deal found 5/1$1,147

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 May 1, 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

Sun 8/31

8:35 pm-8:25 pm

1 stop16h 50m

Cologne Köln/Bonn

Wed 9/10

10:15 pm-3:55 pm

1 stop24h 40m

$598

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 8/31

4:55 pm-8:25 pm

1 stop20h 30m

Cologne Köln/Bonn

Wed 9/10

10:15 pm-1:55 pm

1 stop22h 40m

$599

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 10/9

11:25 am-9:30 am

1 stop15h 05m

Cologne Köln/Bonn

Sun 10/19

7:10 pm-10:00 pm

1 stop33h 50m

$730

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 6/10

7:10 pm-9:25 pm

1 stop19h 15m

Cologne Köln/Bonn

Tue 6/17

3:30 pm-3:55 pm

1 stop31h 25m

$777

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 8/1

2:00 pm-11:10 am

2 stops14h 10m

Cologne Köln/Bonn

Fri 8/15

6:20 am-6:15 pm

2 stops18h 55m

$1,147

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 7/8

2:02 pm-12:15 pm

2 stops15h 13m

Cologne Köln/Bonn

Sat 8/2

6:05 am-12:30 pm

1 stop13h 25m

$1,522

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 6/15

4:20 pm-7:40 pm

1 stop20h 20m

Cologne Köln/Bonn

Sun 6/22

8:50 pm-1:20 pm

1 stop23h 30m

$1,884

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 6/14

7:05 pm-7:25 pm

1 stop17h 20m

Cologne Köln/Bonn

Sat 6/21

7:05 am-3:55 pm

1 stop15h 50m

$2,143

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 7/17

7:10 pm-9:10 pm

1 stop19h 00m

$508

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Thu 7/17

3:14 pm-1:35 pm

2 stops15h 21m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 13 results
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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 May is currently the most expensive (average of $1,389). 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 May 1, 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.

Rainfall in Cologne by month

Plan your trip to Cologne by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cologne ranges from 2.0 - 3.5 inches per month. June is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Cologne when rainfall is around 2.0 in.

Temperature in Cologne by month

Plan your trip to Cologne by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cologne, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 May 1, 2025.
Get a feel of what it's like to fly with Austrian Airlines, SWISS and United Airlines from Illinois to Cologne by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
781 reviews
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,588 reviews
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
United Airlines
7.4
Good
8,696 reviews
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Turkish Airlines
7.3
Good
3,791 reviews
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
781 reviews

Comfort

7.3

Food

6.7

Entertainment

6.7

Crew

8.1

Boarding

7.6

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

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 $508. Users have also found prices from $519 and $607 on American Airlines and Turkish 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 May is currently the most expensive (average of $1,389). 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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Top 3 airlines flying from Illinois to Cologne

Discover the top 3 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$728FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$610Average$1,260FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$860Average$1,342FlexibilityNo cancel feeOn-time76%

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