HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bonn

$273+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — FRA
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Bonn with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Chicago to Bonn are usually found in November or January, booked 54 days in advance, depart on a Monday or Sunday and return on a Sunday

Cheap 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 December 23, 2025.

This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:42 amORD - DUS
2 stops22h 38mBritish Airways
Wed 12/317:05 amDUS - ORD
2 stops20h 32mBritish Airways
Deal found 12/22$990
This FlightHub deal was found by Cheapflights users on 12/21. 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.
Thu 12/259:55 pmORD - DUS
1 stop28h 40mLOT
Sat 12/277:50 pmDUS - ORD
2 stops55h 05mLOT
Deal found 12/21$1,162
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:20 pmORD - DUS
1 stop12h 25mScandinavian Airlines
Thu 1/110:10 amDUS - ORD
1 stop13h 35mScandinavian Airlines
Deal found 12/22$1,194
This American Airlines deal was found by Cheapflights users on 12/22. 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.
Thu 12/258:40 pmORD - DUS
1 stop18h 45mAmerican Airlines
Thu 1/17:05 amDUS - ORD
2 stops17h 51mAmerican Airlines
Deal found 12/22$1,239
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/228:40 pmORD - DUS
1 stop11h 30mAmerican Airlines
Tue 12/306:15 amDUS - ORD
1 stop17h 45mAmerican Airlines
Deal found 12/21$1,252
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:36 pmORD - DUS
2 stops37h 34mBritish Airways
Tue 12/306:15 amDUS - ORD
2 stops18h 41mBritish Airways
Deal found 12/22$1,259
This Delta deal was found by Cheapflights users on 12/21. 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 12/216:08 pmMDW - DUS
2 stops12h 37mDelta
Thu 12/258:15 amDUS - MDW
2 stops21h 07mDelta
Deal found 12/21$2,922
This Air France deal was found by Cheapflights users on 12/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:08 pmMDW - DUS
2 stops12h 37mMultiple Airlines
Sat 12/278:15 amDUS - MDW
2 stops16h 04mMultiple Airlines
Deal found 12/21$4,328

Find flight deals from Chicago to Bonn

Keep the following information in mind while searching for Chicago to Bonn flight deals. Data was last updated December 23, 2025.

Round-trip from

$537
(FlightHub)

One-way from

$273
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$810
From Chicago (CHI) to Bonn
Search Deals
One-way flight from Chicago (CHI) to Bonn
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 23, 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

Wed 4/22

7:15 pm-12:55 pm

2 stops34h 40m

Duesseldorf Intl

Sun 4/26

3:20 pm-4:10 pm

1 stop31h 50m

$569

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Thu 2/5

7:20 pm-6:45 pm

1 stop16h 25m

Duesseldorf Intl

Tue 2/10

7:25 pm-4:45 pm

1 stop28h 20m

$576

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Thu 2/5

7:20 pm-10:00 pm

2 stops19h 40m

Duesseldorf Intl

Tue 2/10

8:50 pm-4:45 pm

2 stops26h 55m

$591

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 1/21

7:20 pm-11:10 am

2 stops32h 50m

Duesseldorf Intl

Wed 1/28

10:10 am-4:45 pm

1 stop13h 35m

$593

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sat 4/11

7:15 pm-12:55 pm

2 stops34h 40m

Duesseldorf Intl

Fri 4/17

3:20 pm-4:10 pm

1 stop31h 50m

$609

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 3/25

8:20 pm-11:10 am

2 stops32h 50m

Duesseldorf Intl

Wed 4/8

1:35 pm-4:10 pm

2 stops57h 35m

$615

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sun 2/8

8:20 pm-10:25 pm

1 stop19h 05m

Duesseldorf Intl

Fri 2/20

2:10 pm-10:05 am

1 stop26h 55m

$635

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 2/4

7:20 pm-11:10 am

2 stops32h 50m

Duesseldorf Intl

Wed 2/11

10:10 am-9:35 pm

2 stops18h 25m

$638

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Mon 1/12

7:20 pm-11:10 am

2 stops32h 50m

Duesseldorf Intl

Sun 1/25

9:35 pm-9:35 pm

2 stops31h 00m

$667

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Sun 2/8

1:26 pm-1:45 pm

2 stops17h 19m

Duesseldorf Intl

Fri 2/20

8:15 am-5:37 pm

2 stops16h 22m

$852

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 34 results
1
2
3
4

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 December 19, 2025.

Booking 54 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, March is the cheapest month in which you can book a flight from Chicago to Bonn (average of $392). Flying from Chicago to Bonn in June is currently the most expensive (average of $738). 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 December 23, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to Bonn at noon. If you’re flexible enough to do this you can expect to save up to 8% on your trip compared to booking a flight in the afternoon.

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 December 16, 2024.

Travelers seeking maximum savings on their Chicago to Bonn flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday afternoons 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 December 23, 2025.

The most flights from CHI to BN9 are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Chicago to Bonn?

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 December 23, 2025.
Read through reviews of airlines operating flights from Chicago to Bonn, such as Scandinavian Airlines, United Airlines, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,620 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Overall

7.4

Comfort

7.3

Crew

8.0

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
1,620 reviews
Scandinavian Airlines
7.4
Good
1,620 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Overall

7.4

Comfort

7.3

Crew

8.0

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
9,103 reviews
Scandinavian Airlines
7.4
Good
1,620 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Overall

7.4

Comfort

7.3

Crew

8.0

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
7,649 reviews
Scandinavian Airlines
7.4
Good
1,620 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Overall

7.4

Comfort

7.3

Crew

8.0

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
7,605 reviews
Scandinavian Airlines
7.4
Good
1,620 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Overall

7.4

Comfort

7.3

Crew

8.0

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 19m. 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 cheapest airlines to fly from Chicago to Bonn one-way?

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as $295. Users have also found prices from $301 and $385 on Scandinavian Airlines and Aer Lingus, respectively.

  • 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 Air Canada (56%), Lufthansa (51%) or United Airlines (50%) 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 $2,696 for a flight from Chicago to Bonn. The cheapest flight overall is $421 while the most popular route, (Chicago O'Hare Intl - Duesseldorf Intl) is currently priced at $515.

  • 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, March is the cheapest month in which you can book a flight from Chicago to Bonn (average of $392). Flying from Chicago to Bonn in June is currently the most expensive (average of $738). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Bonn

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Frankfurt flights
O'Hare Intl to Munich flights
O'Hare Intl to Berlin flights
St. Louis to Frankfurt flights
Midway to Frankfurt flights
O'Hare Intl to Duesseldorf Intl flights
Midway to Munich flights
O'Hare Intl to Frankfurt-Hahn flights
Midway to Berlin flights
O'Hare Intl to Hamburg flights
O'Hare Intl to Stuttgart flights
O'Hare Intl to Cologne flights
St. Louis to Munich flights
St. Louis to Berlin flights
Midway to Duesseldorf Intl flights
O'Hare Intl to Nuremberg flights
Midway to Hamburg flights
St. Louis to Cologne flights
O'Hare Intl to Bremen flights
St. Louis to Duesseldorf Intl flights
Peoria to Frankfurt flights
O'Hare Intl to Leipzig flights
Moline to Frankfurt flights
St. Louis to Dresden flights
O'Hare Intl to Dresden flights
O'Hare Intl to Hannover flights
O'Hare Intl to Rostock flights
Peoria to Munich flights
Springfield to Frankfurt flights
Midway to Stuttgart flights
St. Louis to Hamburg flights
O'Hare Intl to Münster flights
Moline to Duesseldorf Intl flights
Champaign to Frankfurt flights
St. Louis to Nuremberg flights
St. Louis to Stuttgart flights
O'Hare Intl to Saarbruecken flights
O'Hare Intl to Weeze flights
O'Hare Intl to Memmingen flights
O'Hare Intl to Dortmund flights
O'Hare Intl to Paderborn flights
O'Hare Intl to Karlsruhe flights
Midway to Nuremberg flights
Midway to Hannover flights
Midway to Dresden flights
Midway to Bremen flights
Evansville to Stuttgart flights

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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$137Average$786FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$429Average$799FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$462Average$709FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$485Average$721FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$489Average$635FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$491Average$849FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$562Average$879FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$577Average$901FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$579Average$900FlexibilityNo cancel feeOn-time69%
KLMCheapest$596Average$886FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.