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Cologne

$284+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CGN
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
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 June 23, 2025.

Round-trip from

$464
(Flightnetwork)

One-way from

$284
(Flightnetwork)

Popular in

November

Cheapest in

February

Average price

$1,106
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 June 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 June 23, 2025.

This Flightnetwork deal was found by Cheapflights users on 6/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/49:15 pmORD - CGN
1 stop16h 15mBritish Airways
Tue 8/199:15 pmCGN - ORD
1 stop21h 40mBritish Airways
Deal found 6/21$464
This Iberia deal was found by Cheapflights users on 6/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/47:15 pmORD - CGN
1 stop18h 15mMultiple Airlines
Mon 8/189:15 pmCGN - ORD
2 stops23h 15mMultiple Airlines
Deal found 6/22$642
This American Airlines deal was found by Cheapflights users on 6/22. 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 6/308:30 pmORD - CGN
1 stop17h 00mAmerican Airlines
Thu 7/1010:15 amCGN - ORD
1 stop12h 40mAmerican Airlines
Deal found 6/22$771
This Booking.com deal was found by Cheapflights users on 6/21. 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.
Mon 8/43:50 pmORD - CGN
2 stops18h 15mAir Canada
Tue 8/197:40 amCGN - ORD
2 stops14h 15mAir Canada
Deal found 6/21$904
This Turkish Airlines deal was found by Cheapflights users on 6/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/511:25 amORD - CGN
1 stop15h 05mTurkish Airlines
Wed 7/97:10 pmCGN - ORD
1 stop21h 30mTurkish Airlines
Deal found 6/21$1,121

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 June 23, 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

Mon 8/4

9:15 pm-8:30 pm

1 stop16h 15m

Cologne Köln/Bonn

Tue 8/19

9:15 pm-11:55 am

1 stop21h 40m

$464

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 8/4

7:15 pm-8:30 pm

1 stop18h 15m

Cologne Köln/Bonn

Mon 8/18

9:15 pm-1:30 pm

2 stops23h 15m

$642

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Wed 8/13

9:15 pm-9:00 pm

2 stops16h 45m

Cologne Köln/Bonn

Mon 8/18

10:50 am-10:59 pm

2 stops19h 09m

$771

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Mon 8/4

3:50 pm-5:05 pm

2 stops18h 15m

Cologne Köln/Bonn

Tue 8/19

7:40 am-2:55 pm

2 stops14h 15m

$904

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sat 7/5

11:25 am-9:30 am

1 stop15h 05m

Cologne Köln/Bonn

Wed 7/9

7:10 pm-9:40 am

1 stop21h 30m

$1,121

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 8/5

7:10 pm-9:25 pm

1 stop19h 15m

$284

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Sun 11/23

5:00 pm-6:25 pm

1 stop18h 25m

$287

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 7/4

3:09 pm-9:35 pm

3 stops47h 26m

$382

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Tue 7/1

7:50 pm-6:10 pm

1 stop15h 20m

$875

ChicagoCologne

ORD - CGN

ORDCGN

Chicago O'Hare Intl

Fri 7/4

9:40 pm-6:55 pm

1 stop14h 15m

$1,110

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 12 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 $1,261). 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 June 23, 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 June 23, 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
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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
805 reviews
Austrian Airlines
7.6
Good
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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
1,645 reviews
Austrian Airlines
7.6
Good
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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
8,831 reviews
Austrian Airlines
7.6
Good
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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
3,867 reviews
Austrian Airlines
7.6
Good
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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
805 reviews

Entertainment

6.8

Boarding

7.6

Crew

8.1

Comfort

7.3

Food

6.8

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 $284. Users have also found prices from $287 and $875 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 June is currently the most expensive (average of $1,261). 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 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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$739FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$610Average$1,126FlexibilityNo cancel feeOn-time69%

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