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$514+ Cheap flights from Cologne (CGN) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$517
(British Airways)

Popular in

May

Cheapest in

September

Average price

$636
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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Highest demand for flights based on searches. 9% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This British Airways deal was found by Cheapflights users on 4/16. 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.
Thu 4/249:55 pmCGN - ORD
1 stop20h 50mBritish Airways
Mon 4/2810:20 pmORD - CGN
1 stop15h 10mBritish Airways
Deal found 4/16$514
This Air Canada deal was found by Cheapflights users on 4/17. 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.
Sat 5/174:30 pmCGN - ORD
2 stops22h 32mAir Canada
Sun 5/2510:40 amORD - CGN
2 stops23h 25mAir Canada
Deal found 4/17$528
This Booking.com deal was found by Cheapflights users on 4/16. 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.
Thu 4/2410:15 amCGN - ORD
1 stop13h 45mMultiple Airlines
Thu 5/18:20 pmORD - CGN
1 stop17h 50mMultiple Airlines
Deal found 4/16$530
This British Airways deal was found by Cheapflights users on 4/17. 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.
Fri 5/210:00 pmCGN - STL
2 stops23h 53mBritish Airways
Tue 5/67:30 pmSTL - CGN
2 stops18h 55mBritish Airways
Deal found 4/17$577
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/301:26 pmORD - CGN
2 stops14h 44mUnited Airlines
Deal found 4/16$684
This oojo deal was found by Cheapflights users on 4/17. 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.
Thu 5/18:05 pmCGN - ORD
1 stop29h 10mLufthansa
Fri 5/309:40 pmORD - CGN
1 stop12h 55mLufthansa
Deal found 4/17$769
This Austrian Airlines deal was found by Cheapflights users on 4/16. 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.
Tue 5/279:35 amCGN - ORD
2 stops15h 35mAustrian Airlines
Mon 6/24:20 pmORD - CGN
1 stop33h 30mAustrian Airlines
Deal found 4/16$902
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Fri 5/26:05 amCGN - STL
3 stops20h 38mMultiple Airlines
Tue 5/61:30 pmSTL - CGN
3 stops26h 40mMultiple Airlines
Deal found 4/17$1,146
This Flysmarter deal was found by Cheapflights users on 4/17. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/26:05 amCGN - STL
3 stops20h 53mAir Canada
Tue 5/63:43 pmSTL - CGN
2 stops13h 32mAir Canada
Deal found 4/17$1,395
This Lufthansa deal was found by Cheapflights users on 4/17. 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.
Sat 5/36:05 amCGN - STL
2 stops16h 42mLufthansa
Wed 5/73:30 pmSTL - CGN
2 stops13h 45mLufthansa
Deal found 4/17$1,396
This SWISS deal was found by Cheapflights users on 4/16. 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.
Tue 5/276:50 amCGN - ORD
1 stop16h 05mSWISS
Mon 6/27:05 pmORD - CGN
1 stop19h 30mSWISS
Deal found 4/16$1,568
This flugladen.de deal was found by Cheapflights users on 4/17. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:10 pmCGN - ORD
1 stop29h 45mTurkish Airlines
Sat 10/2511:25 amORD - CGN
1 stop17h 20mTurkish Airlines
Deal found 4/17$3,601

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 April 17, 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

Sat 5/17

10:20 am-6:15 pm

1 stop14h 55m

Chicago O'Hare Intl

Sat 5/24

9:15 pm-8:50 pm

1 stop16h 35m

$517

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 5/17

4:30 pm-8:02 am

2 stops22h 32m

Chicago O'Hare Intl

Sun 5/25

10:40 am-5:05 pm

2 stops23h 25m

$528

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Fri 5/2

10:00 pm-2:53 pm

2 stops23h 53m

Lambert-St Louis

Tue 5/6

7:30 pm-9:25 pm

2 stops18h 55m

$577

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Fri 5/23

6:20 am-3:55 pm

1 stop16h 35m

Chicago O'Hare Intl

Fri 5/30

1:26 pm-11:10 am

2 stops14h 44m

$676

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 5/17

7:40 am-2:10 pm

1 stop13h 30m

Chicago O'Hare Intl

Thu 5/22

2:24 pm-11:10 am

2 stops13h 46m

$682

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 5/1

8:05 pm-6:15 pm

1 stop29h 10m

Chicago O'Hare Intl

Fri 5/30

9:40 pm-5:35 pm

1 stop12h 55m

$769

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Tue 5/27

9:35 am-6:10 pm

2 stops15h 35m

Chicago O'Hare Intl

Mon 6/2

4:20 pm-8:50 am

1 stop33h 30m

$902

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Fri 5/2

6:05 am-7:43 pm

3 stops20h 38m

Lambert-St Louis

Tue 5/6

1:30 pm-11:10 pm

3 stops26h 40m

$1,146

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Fri 5/2

6:05 am-7:58 pm

3 stops20h 53m

Lambert-St Louis

Tue 5/6

3:43 pm-12:15 pm

2 stops13h 32m

$1,395

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sat 5/3

6:05 am-3:47 pm

2 stops16h 42m

Lambert-St Louis

Wed 5/7

3:30 pm-12:15 pm

2 stops13h 45m

$1,396

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 15 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 April 17, 2025.
Read through reviews of airlines operating flights from Cologne to Illinois, such as Austrian Airlines, SWISS and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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
775 reviews
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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
1,580 reviews
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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
8,667 reviews
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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
3,769 reviews
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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.
Air Canada
7.0
Good
9,142 reviews
Austrian Airlines
7.6
Good
775 reviews

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.7

Crew

8.1

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 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 $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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$855Average$892FlexibilityNo cancel feeOn-time76%

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