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$338+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$506
(Flighttix)

One-way from

$338
(Kiwi.com)

Popular in

May

Cheapest in

October

Average price

$584
From Cologne Köln/Bonn to Illinois
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One-way flight from Cologne Köln/Bonn to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 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 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 June 12, 2025.

This Flighttix deal was found by Cheapflights users on 6/10. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/199:55 pmCGN - ORD
1 stop21h 00mBritish Airways
Mon 6/235:45 pmORD - CGN
1 stop19h 45mBritish Airways
Deal found 6/10$506
This Billigflug deal was found by Cheapflights users on 6/10. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/199:55 pmCGN - ORD
1 stop23h 50mMultiple Airlines
Tue 6/248:30 pmORD - CGN
1 stop17h 55mMultiple Airlines
Deal found 6/10$537
This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/26:35 pmCGN - ORD
2 stops45h 34mAir Canada
Wed 7/302:07 pmORD - CGN
2 stops14h 03mAir Canada
Deal found 6/12$584
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/1410:15 amCGN - ORD
1 stop13h 45mAmerican Airlines
Thu 8/213:09 pmORD - CGN
2 stops15h 26mAmerican Airlines
Deal found 6/10$609
This Lufthansa deal was found by Cheapflights users on 6/12. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/26:05 amCGN - ORD
1 stop14h 55mLufthansa
Tue 7/296:00 pmORD - CGN
1 stop11h 15mLufthansa
Deal found 6/12$671
This Austrian Airlines deal was found by Cheapflights users on 6/12. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/28:25 pmCGN - ORD
2 stops23h 45mAustrian Airlines
Sun 8/34:20 pmORD - CGN
1 stop33h 30mAustrian Airlines
Deal found 6/12$677
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/36:05 amCGN - ORD
2 stops15h 50mUnited Airlines
Thu 7/316:00 pmORD - CGN
1 stop16h 35mUnited Airlines
Deal found 6/11$683
This British Airways deal was found by Cheapflights users on 6/12. 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.
Wed 7/210:15 pmCGN - STL
2 stops28h 20mBritish Airways
Sun 7/134:52 pmSTL - CGN
2 stops20h 33mBritish Airways
Deal found 6/12$716
This Flighttix deal was found by Cheapflights users on 6/11. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/217:40 amCGN - STL
2 stops20h 08mMultiple Airlines
Fri 7/185:30 pmSTL - CGN
2 stops15h 20mMultiple Airlines
Deal found 6/11$746
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 7/251:35 pmCGN - STL
2 stops17h 00mUnited Airlines
Fri 8/15:30 pmSTL - CGN
2 stops40h 35mUnited Airlines
Deal found 6/10$798
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Sun 7/67:10 pmCGN - ORD
1 stop21h 30mTurkish Airlines
Wed 7/3011:25 amORD - CGN
1 stop19h 25mTurkish Airlines
Deal found 6/12$962
This SWISS deal was found by Cheapflights users on 6/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/196:20 amCGN - ORD
1 stop16h 35mSWISS
Mon 6/237:05 pmORD - CGN
1 stop31h 05mSWISS
Deal found 6/10$1,018

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 June 12, 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 6/25

10:15 pm-11:55 am

1 stop20h 40m

Chicago O'Hare Intl

Sun 6/29

6:25 pm-8:25 pm

2 stops19h 00m

$506

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 8/14

10:15 am-5:00 pm

1 stop13h 45m

Chicago O'Hare Intl

Thu 8/21

5:00 pm-1:35 pm

1 stop13h 35m

$537

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 7/2

6:35 pm-9:09 am

2 stops45h 34m

Chicago O'Hare Intl

Wed 7/30

2:07 pm-11:10 am

2 stops14h 03m

$584

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 8/14

10:15 am-5:00 pm

1 stop13h 45m

Chicago O'Hare Intl

Thu 8/21

3:09 pm-1:35 pm

2 stops15h 26m

$609

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 7/2

6:05 am-2:00 pm

1 stop14h 55m

Chicago O'Hare Intl

Tue 7/29

6:00 pm-12:15 pm

1 stop11h 15m

$671

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 7/2

6:05 am-2:00 pm

1 stop14h 55m

Chicago O'Hare Intl

Tue 7/29

2:28 pm-12:15 pm

2 stops14h 47m

$673

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Wed 7/2

8:25 pm-1:10 pm

2 stops23h 45m

Chicago O'Hare Intl

Sun 8/3

4:20 pm-8:50 am

1 stop33h 30m

$677

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Wed 7/2

10:15 pm-7:35 pm

2 stops28h 20m

Lambert-St Louis

Sun 7/13

4:52 pm-8:25 pm

2 stops20h 33m

$716

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Fri 7/25

1:35 pm-11:35 pm

2 stops17h 00m

Lambert-St Louis

Fri 8/1

5:30 pm-5:05 pm

2 stops40h 35m

$798

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sun 7/6

7:10 pm-9:40 am

1 stop21h 30m

Chicago O'Hare Intl

Wed 7/30

11:25 am-1:50 pm

1 stop19h 25m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 19 results
1
2

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 $321). 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 June 12, 2025.
Read through reviews of airlines operating flights from Cologne to Illinois, such as Austrian Airlines, United Airlines and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
United Airlines
7.4
Good
8,790 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Turkish Airlines
7.3
Good
3,848 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Air Canada
7.1
Good
9,537 reviews
Austrian Airlines
7.6
Good
802 reviews

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

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.

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

    One-way options have recently been found by users for as low as $771 on Lufthansa. Other airlines that offer cheap prices include British Airways from $817 and Austrian Airlines from $865 one-way.

  • 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 $321). 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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Alternative routes for Cologne to Illinois

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$855Average$892FlexibilityNo cancel feeOn-time76%

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