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$347+ Cheap flights from Cologne (CGN) to Illinois

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from Cologne to Illinois

Keep the following information in mind while searching for Cologne to Illinois flight deals. Data was last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$496
(Billigflug)

One-way from

$347
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$790
Provider with most accurate pricing for Cologne Köln/Bonn-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Chicago (CHI) flights.
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From Cologne Köln/Bonn to Illinois
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One-way flight from Cologne Köln/Bonn to Illinois
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Highest demand for flights based on searches. 7% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Cologne to Illinois

Cheapest flights from Cologne to Illinois
Explore the most affordable flight options available from Cologne to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/710:50 amCGN - ORD
1 stop13h 10mBritish Airways
Sun 4/136:30 pmORD - CGN
2 stops18h 55mBritish Airways
Deal found 3/30$496
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/79:15 pmCGN - ORD
1 stop21h 30mMultiple Airlines
Sun 4/1310:20 pmORD - CGN
1 stop15h 05mMultiple Airlines
Deal found 3/30$512
This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/317:40 amCGN - ORD
2 stops14h 07mAir Canada
Thu 6/126:30 pmORD - CGN
2 stops15h 35mAir Canada
Deal found 3/30$542
This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:20 amCGN - STL
2 stops20h 38mAir Canada
Wed 5/217:30 amSTL - CGN
2 stops20h 40mAir Canada
Deal found 3/30$590
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:20 amCGN - ORD
1 stop13h 25mUnited Airlines
Fri 5/304:05 pmORD - CGN
1 stop12h 05mUnited Airlines
Deal found 3/30$649
This KAYAK deal was found by Cheapflights users on 3/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/206:05 amCGN - ORD
2 stops14h 40mLufthansa
Sat 4/267:50 pmORD - CGN
2 stops38h 20mLufthansa
Deal found 3/30$685
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/710:50 amCGN - ORD
1 stop12h 05mAmerican Airlines
Sun 4/1310:20 pmORD - CGN
1 stop15h 05mAmerican Airlines
Deal found 3/30$778
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:05 amCGN - STL
3 stops20h 53mMultiple Airlines
Wed 5/217:30 amSTL - CGN
3 stops27h 15mMultiple Airlines
Deal found 3/30$873

Cheapflights Fare Finder

Customize your flight search to find flights from Cologne to Illinois 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 March 31, 2025.
Use the filters below to find and compare flights from Cologne to Illinois that are best for you.

Fly from

Cologne

Fly to

Illinois

Route

Depart

Return

Price

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 4/16

12:55 pm-11:29 pm

2 stops17h 34m

Chicago O'Hare Intl

Sun 4/20

9:40 pm-11:00 pm

1 stop18h 20m

$496

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 5/31

7:40 am-2:47 pm

2 stops14h 07m

Chicago O'Hare Intl

Thu 6/12

6:30 pm-5:05 pm

2 stops15h 35m

$542

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Wed 5/14

6:20 am-7:58 pm

2 stops20h 38m

Lambert-St Louis

Wed 5/21

7:30 am-11:10 am

2 stops20h 40m

$590

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 5/1

6:20 am-12:45 pm

1 stop13h 25m

Chicago O'Hare Intl

Fri 5/30

4:05 pm-11:10 am

1 stop12h 05m

$649

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sun 4/20

6:05 am-1:45 pm

2 stops14h 40m

Chicago O'Hare Intl

Sat 4/26

7:50 pm-5:10 pm

2 stops38h 20m

$685

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Tue 4/15

9:15 pm-1:50 pm

1 stop23h 35m

Chicago O'Hare Intl

Fri 5/30

9:15 pm-9:15 am

1 stop29h 00m

$690

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Wed 5/14

6:05 am-7:58 pm

3 stops20h 53m

Lambert-St Louis

Wed 5/21

7:30 am-5:45 pm

2 stops27h 15m

$873

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Mon 4/28

7:40 am-11:36 pm

2 stops22h 56m

$347

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 7/31

5:55 pm-11:25 am

2 stops24h 30m

$785

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 7/31

6:20 am-11:37 pm

3 stops24h 17m

$2,720

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Best time to book a flight from Cologne to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Cologne to Illinois (average of $245). Flying from Cologne to Illinois in March is currently the most expensive (average of $323). 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated March 31, 2025.
Read through reviews of airlines operating flights from Cologne to Illinois, such as United Airlines, Air Canada and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,614 reviews
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Air Canada
7.0
Good
9,004 reviews
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Lufthansa
6.7
Okay
6,960 reviews
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
British Airways
6.6
Okay
6,713 reviews
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

    Cologne Köln/Bonn (CGN), located 9.5 mi from the city center, is the airport you fly out of when you book flights from Cologne to Illinois.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Cologne to Illinois (average of $245). Flying from Cologne to Illinois in March is currently the most expensive (average of $323). 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 airline flying from Cologne to Illinois

Discover the top airline that operate flights from Cologne to Illinois. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$855Average$892FlexibilityNo cancel feeOn-time76%
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