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Bonn

$231+ Cheap flights from Chicago (CHI) to Bonn, Germany

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — FRA
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Bonn are usually found in January or March, booked 34 days in advance, depart on a Monday or Sunday and return on a Sunday

Cheap flight deals from Chicago to Bonn

Keep the following information in mind while searching for Chicago to Bonn flight deals. Data was last updated August 20, 2025.

Round-trip from

$454
(oojo)

One-way from

$231
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$688
From Chicago (CHI) to Bonn
Search Deals
One-way flight from Chicago (CHI) to Bonn
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Chicago to Bonn

Cheapest flights from Chicago to Bonn
Explore the most affordable flight options available from Chicago to Bonn. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This oojo deal was found by Cheapflights users on 8/19. 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.
Mon 10/278:20 pmORD - DUS
1 stop31h 10mScandinavian Airlines
Thu 11/611:50 amDUS - ORD
2 stops35h 55mScandinavian Airlines
Deal found 8/19$456
This oojo deal was found by Cheapflights users on 8/19. 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.
Sat 11/18:20 pmORD - DUS
1 stop31h 10mScandinavian Airlines
Fri 11/711:50 amDUS - ORD
2 stops35h 55mScandinavian Airlines
Deal found 8/19$494
This Mytrip deal was found by Cheapflights users on 8/20. 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.
Sun 10/127:15 pmORD - DUS
2 stops34h 45mScandinavian Airlines
Tue 10/2811:50 amDUS - ORD
2 stops39h 15mScandinavian Airlines
Deal found 8/20$502
This FlightHub deal was found by Cheapflights users on 8/19. 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 10/197:15 pmORD - DUS
1 stop16h 30mScandinavian Airlines
Wed 10/297:25 pmDUS - ORD
1 stop29h 20mScandinavian Airlines
Deal found 8/19$507
This oojo deal was found by Cheapflights users on 8/19. 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.
Fri 12/267:20 pmORD - DUS
1 stop12h 25mScandinavian Airlines
Wed 1/77:25 pmDUS - ORD
1 stop28h 20mScandinavian Airlines
Deal found 8/19$536
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:20 pmORD - DUS
1 stop12h 25mScandinavian Airlines
Mon 12/110:10 amDUS - ORD
1 stop13h 35mScandinavian Airlines
Deal found 8/18$563
This Cheapflightsfares deal was found by Cheapflights users on 8/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:20 pmORD - DUS
2 stops32h 50mScandinavian Airlines
Mon 11/2410:10 amDUS - ORD
1 stop13h 35mScandinavian Airlines
Deal found 8/19$567
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:23 pmMDW - DUS
2 stops13h 22mDelta
Thu 11/66:15 amDUS - MDW
2 stops18h 28mDelta
Deal found 8/19$901
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:30 amMDW - DUS
2 stops15h 10mDelta
Tue 11/256:40 amDUS - MDW
2 stops16h 43mDelta
Deal found 8/19$913
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:30 amMDW - DUS
2 stops15h 10mDelta
Mon 11/246:40 amDUS - MDW
2 stops18h 56mDelta
Deal found 8/19$963
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/196:23 pmMDW - DUS
2 stops14h 22mDelta
Wed 10/296:40 amDUS - MDW
2 stops17h 03mDelta
Deal found 8/18$1,031
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/111:06 pmMDW - DUS
2 stops11h 34mDelta
Sat 10/188:15 amDUS - MDW
2 stops17h 10mDelta
Deal found 8/20$1,211

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Bonn 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 August 20, 2025.
Use the filters below to find and compare flights from Chicago to Bonn that are best for you.

Fly from

Chicago

Fly to

Bonn

Route

Depart

Return

Price

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Mon 10/27

8:20 pm-9:30 am

1 stop31h 10m

Duesseldorf Intl

Thu 11/6

11:50 am-4:45 pm

2 stops35h 55m

$456

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sat 11/1

8:20 pm-9:30 am

1 stop31h 10m

Duesseldorf Intl

Fri 11/7

11:50 am-4:45 pm

2 stops35h 55m

$494

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sun 10/12

7:15 pm-1:00 pm

2 stops34h 45m

Duesseldorf Intl

Tue 10/28

11:50 am-9:05 pm

2 stops39h 15m

$502

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sun 10/19

7:15 pm-6:45 pm

1 stop16h 30m

Duesseldorf Intl

Wed 10/29

7:25 pm-6:45 pm

1 stop29h 20m

$507

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Fri 12/26

7:20 pm-2:45 pm

1 stop12h 25m

Duesseldorf Intl

Wed 1/7

7:25 pm-4:45 pm

1 stop28h 20m

$536

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 11/26

7:20 pm-2:45 pm

1 stop12h 25m

Duesseldorf Intl

Mon 12/1

10:10 am-4:45 pm

1 stop13h 35m

$563

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Mon 10/27

6:23 pm-5:40 pm

2 stops17h 17m

Duesseldorf Intl

Thu 11/6

6:15 am-5:43 pm

2 stops18h 28m

$901

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Sun 11/16

9:30 am-7:40 am

2 stops15h 10m

Duesseldorf Intl

Tue 11/25

6:40 am-4:23 pm

2 stops16h 43m

$913

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Mon 11/17

10:35 am-7:40 am

2 stops14h 05m

Duesseldorf Intl

Tue 11/25

6:40 am-6:07 pm

2 stops18h 27m

$913

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Sun 11/16

9:30 am-7:40 am

2 stops15h 10m

Duesseldorf Intl

Mon 11/24

6:40 am-6:36 pm

2 stops18h 56m

$963

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 31 results
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Best time to book a flight from Chicago to Bonn

Have a flexible travel schedule? Discover the best time to fly to Bonn from Chicago 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 Chicago to Bonn

How far ahead should I book a flight from Chicago to Bonn?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Bonn. Price data was last updated on August 8, 2025.

Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Bonn. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to Bonn?

Currently, January is the cheapest month in which you can book a flight from Chicago to Bonn (average of $729). Flying from Chicago to Bonn in June is currently the most expensive (average of $1,089). 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 CHI to BN9?

Find hourly flight availability from Chicago to Bonn. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Chicago to Bonn, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Chicago to Bonn?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Bonn. Price data was last updated on October 6, 2024.

Travelers seeking maximum savings on their Chicago to Bonn flight should consider departing on Monday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Bonn

Explore weekly flight availability from Chicago to Bonn. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 20, 2025.

The most flights from CHI to BN9 are scheduled on a Monday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

Reviews of airlines servicing Bonn

Get insights into the airlines that provide service to Bonn. 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 Bonn. Reviews last updated August 20, 2025.
Read through reviews of airlines operating flights from Chicago to Bonn, such as Scandinavian Airlines, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
Scandinavian Airlines
7.4
Good
1,471 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
United Airlines
7.4
Good
8,928 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
American Airlines
7.2
Good
10,000 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
Lufthansa
6.8
Okay
7,337 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
British Airways
6.7
Okay
7,289 reviews
Scandinavian Airlines
7.4
Good
1,471 reviews

Crew

8.0

Food

6.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Boarding

7.6

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu

Related info for your journey

Find useful and relevant information for your journey from Chicago to Bonn. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Bonn?

    Departing from Chicago to Bonn will take you 17h 17m. Airlines will cover a distance of 4219 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most reliable airlines from Chicago to Bonn?

    No one likes to see their flight delayed. When booking a flight from Chicago to Bonn consider choosing Lufthansa (58%), Air Canada (52%) or United Airlines (52%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Bonn?

    On average you can expect to pay $2,714 for a flight from Chicago to Bonn. The cheapest flight overall is $451 while the most popular route, (Chicago O'Hare Intl - Duesseldorf Intl) is currently priced at $456.

  • Can I find deals for flights from Chicago to Bonn that include hotel bookings?

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

  • How can I find direct flights from Chicago to Bonn?

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

  • Can I find deals for business class flights from Chicago to Bonn?

    Yes. Cheapflights offers flight deals from Chicago to Bonn 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 Chicago to Bonn?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Bonn (average of $729). Flying from Chicago to Bonn in June is currently the most expensive (average of $1,089). 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 Chicago to Bonn

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Chicago to Bonn

Discover the top 10 airlines that operate flights from Chicago to Bonn. 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$881FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$333Average$630FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$460Average$693FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$485Average$754FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$505Average$842FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$560Average$768FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$591Average$853FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$594Average$1,135FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$609Average$696FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$630Average$899FlexibilityNo cancel feeOn-time76%

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