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$426+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ORD
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
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 February 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$476
(Billigflug)

One-way from

$426
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$583
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. 9% potential increase in price ($66 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 February 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 February 23, 2025.

This AirNGo deal was found by Cheapflights users on 2/22. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:35 amCGN - ORD
1 stop14h 10mBritish Airways
Mon 3/1011:42 amORD - CGN
2 stops17h 23mBritish Airways
Deal found 2/22$473
This Billigflug deal was found by Cheapflights users on 2/22. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/176:05 amCGN - ORD
1 stop19h 10mLufthansa
Mon 4/219:40 pmORD - CGN
1 stop11h 10mLufthansa
Deal found 2/22$476
This American Airlines deal was found by Cheapflights users on 2/22. 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 3/311:35 amCGN - ORD
1 stop12h 25mAmerican Airlines
Mon 3/109:47 amORD - CGN
2 stops19h 18mAmerican Airlines
Deal found 2/22$482
This Billigflug deal was found by Cheapflights users on 2/22. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/176:05 amCGN - ORD
1 stop19h 10mMultiple Airlines
Mon 4/212:05 pmORD - CGN
2 stops14h 05mMultiple Airlines
Deal found 2/22$483
This Gotogate deal was found by Cheapflights users on 2/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/87:30 amCGN - ORD
2 stops19h 07mAir Canada
Wed 3/129:50 amORD - CGN
2 stops29h 25mAir Canada
Deal found 2/22$520
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/39:10 amCGN - ORD
1 stop16h 15mUnited Airlines
Mon 3/107:00 pmORD - CGN
1 stop11h 45mUnited Airlines
Deal found 2/22$666
This Austrian Airlines deal was found by Cheapflights users on 2/22. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/77:00 amCGN - ORD
1 stop13h 20mAustrian Airlines
Sat 6/144:20 pmORD - CGN
1 stop33h 30mAustrian Airlines
Deal found 2/22$1,113
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/85:55 pmCGN - ORD
2 stops28h 35mTAP AIR PORTUGAL
Wed 3/1212:48 pmORD - CGN
3 stops22h 22mTAP AIR PORTUGAL
Deal found 2/22$1,202
This Gotogate deal was found by Cheapflights users on 2/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/246:15 pmCGN - ORD
1 stop31h 20mTurkish Airlines
Fri 2/288:30 pmORD - CGN
1 stop31h 15mTurkish Airlines
Deal found 2/22$1,477
This Billigflug deal was found by Cheapflights users on 2/22. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/99:10 amCGN - STL
2 stops16h 40mMultiple Airlines
Thu 3/133:25 pmSTL - CGN
2 stops15h 20mMultiple Airlines
Deal found 2/22$1,500
This Flysmarter deal was found by Cheapflights users on 2/22. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/99:10 amCGN - STL
2 stops18h 57mAir Canada
Thu 3/131:05 pmSTL - CGN
3 stops17h 40mAir Canada
Deal found 2/22$1,544
This Expedia deal was found by Cheapflights users on 2/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/98:15 pmCGN - STL
2 stops33h 17mLufthansa
Thu 3/1312:05 pmSTL - CGN
2 stops15h 55mLufthansa
Deal found 2/22$1,869

Find flights from Cologne to Illinois within your budget

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 February 23, 2025.

Fly from

Cologne

Fly to

Illinois

Route

Depart

Return

Price

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 4/17

6:05 am-6:15 pm

1 stop19h 10m

Chicago O'Hare Intl

Mon 4/21

9:40 pm-3:50 pm

1 stop11h 10m

$476

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Thu 4/17

6:05 am-6:15 pm

1 stop19h 10m

Chicago O'Hare Intl

Mon 4/21

2:05 pm-11:10 am

2 stops14h 05m

$483

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Fri 3/7

11:10 am-12:26 am

2 stops20h 16m

Chicago O'Hare Intl

Tue 3/11

1:49 pm-10:25 am

2 stops14h 36m

$487

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 3/8

7:30 am-7:37 pm

2 stops19h 07m

Chicago O'Hare Intl

Wed 3/12

9:50 am-9:15 pm

2 stops29h 25m

$520

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 6/7

7:00 am-1:20 pm

1 stop13h 20m

Chicago O'Hare Intl

Sat 6/14

4:20 pm-8:50 am

1 stop33h 30m

$1,113

CologneChicago

CGN - ORD

CGNORD

Cologne Köln/Bonn

Sat 3/8

5:55 pm-3:30 pm

2 stops28h 35m

Chicago O'Hare Intl

Wed 3/12

12:48 pm-5:10 pm

3 stops22h 22m

$1,202

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sun 3/9

9:10 am-7:50 pm

2 stops16h 40m

Lambert-St Louis

Thu 3/13

3:25 pm-12:45 pm

2 stops15h 20m

$1,500

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sun 3/9

9:10 am-10:07 pm

2 stops18h 57m

Lambert-St Louis

Thu 3/13

1:05 pm-12:45 pm

3 stops17h 40m

$1,544

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sun 3/9

8:15 pm-11:32 pm

2 stops33h 17m

Lambert-St Louis

Thu 3/13

12:05 pm-10:00 am

2 stops15h 55m

$1,869

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Thu 3/6

7:55 pm-11:49 pm

3 stops58h 54m

$426

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 13 results
1
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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.

Travel insights for flights from Cologne to Illinois

Get recent, data-driven insights about flights from Cologne to Illinois including ideal travel times, pricing trends, and more.

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 February 23, 2025.
Read through reviews of airlines operating flights from Cologne to Illinois, such as Austrian Airlines, United Airlines and TAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Austrian Airlines
7.5
Good
771 reviews
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

United Airlines
7.4
Good
8,754 reviews
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

TAP AIR PORTUGAL
7.2
Good
1,840 reviews
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Air Canada
7.0
Good
8,757 reviews
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Lufthansa
6.7
Okay
6,990 reviews
Austrian Airlines
7.5
Good
771 reviews

Crew

8.1

Comfort

7.3

Food

6.7

Overall

7.5

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$627Average$892FlexibilityNo cancel feeOn-time76%
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