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Bonn

$304+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — FRA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Bonn are usually found in January or May, booked 43 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 July 3, 2025.

Round-trip from

$533
(oojo)

One-way from

$304
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$1,086
From Chicago (CHI) to Bonn
Search Deals
One-way flight from Chicago (CHI) to Bonn
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Highest demand for flights based on searches. 19% potential increase in price ($184 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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.
Tue 9/307:15 pmORD - DUS
1 stop12h 35mScandinavian Airlines
Tue 10/76:05 amDUS - ORD
1 stop17h 05mScandinavian Airlines
Deal found 7/2$534
This Finnair deal was found by Cheapflights users on 7/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:30 pmORD - DUS
1 stop13h 30mMultiple Airlines
Wed 8/206:20 amDUS - ORD
1 stop14h 55mMultiple Airlines
Deal found 7/1$539
This Booking.com deal was found by Cheapflights users on 7/1. 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.
Wed 8/69:15 pmORD - DUS
1 stop16h 50mBritish Airways
Wed 8/2010:50 amDUS - ORD
1 stop12h 05mBritish Airways
Deal found 7/1$545
This oojo deal was found by Cheapflights users on 7/1. 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 8/288:50 pmORD - DUS
1 stop13h 05mTAP AIR PORTUGAL
Sat 9/65:45 pmDUS - ORD
1 stop29h 25mTAP AIR PORTUGAL
Deal found 7/1$547
This Iberia deal was found by Cheapflights users on 7/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/134:30 pmORD - DUS
1 stop19h 40mIberia
Tue 10/76:20 amDUS - ORD
2 stops23h 19mIberia
Deal found 7/2$586
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 8/63:48 pmORD - DUS
2 stops15h 17mUnited Airlines
Wed 8/2010:45 amDUS - ORD
1 stop11h 10mUnited Airlines
Deal found 7/1$601
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Wed 11/262:00 pmORD - DUS
2 stops13h 25mAir Canada
Mon 12/12:30 pmDUS - ORD
2 stops31h 25mAir Canada
Deal found 7/2$607
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 8/133:21 pmORD - DUS
2 stops13h 29mAmerican Airlines
Wed 8/2010:25 amDUS - ORD
1 stop12h 20mAmerican Airlines
Deal found 7/1$615
This Delta deal was found by Cheapflights users on 7/2. 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.
Wed 8/67:21 pmMDW - DUS
2 stops15h 19mDelta
Wed 8/206:40 amDUS - MDW
2 stops17h 57mDelta
Deal found 7/2$963
This Air France deal was found by Cheapflights users on 7/2. 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.
Fri 12/191:00 pmMDW - DUS
2 stops11h 40mKLM
Sat 1/38:15 amDUS - MDW
2 stops15h 08mKLM
Deal found 7/2$2,078

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 July 3, 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

Tue 9/30

7:15 pm-2:50 pm

1 stop12h 35m

Duesseldorf Intl

Tue 10/7

6:05 am-4:10 pm

1 stop17h 05m

$534

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 8/13

9:30 pm-6:00 pm

1 stop13h 30m

Duesseldorf Intl

Wed 8/20

6:20 am-2:15 pm

1 stop14h 55m

$539

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Mon 8/4

9:15 pm-6:00 pm

1 stop13h 45m

Duesseldorf Intl

Wed 8/20

7:15 am-3:55 pm

1 stop15h 40m

$546

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Thu 8/28

8:50 pm-4:55 pm

1 stop13h 05m

Duesseldorf Intl

Sat 9/6

5:45 pm-4:10 pm

1 stop29h 25m

$547

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 8/13

4:30 pm-7:10 pm

1 stop19h 40m

Duesseldorf Intl

Tue 10/7

6:20 am-10:39 pm

2 stops23h 19m

$586

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 8/6

3:48 pm-2:05 pm

2 stops15h 17m

Duesseldorf Intl

Wed 8/20

10:45 am-2:55 pm

1 stop11h 10m

$601

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Wed 8/13

3:21 pm-11:50 am

2 stops13h 29m

Duesseldorf Intl

Wed 8/20

10:25 am-3:45 pm

1 stop12h 20m

$615

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Wed 8/6

7:21 pm-5:40 pm

2 stops15h 19m

Duesseldorf Intl

Wed 8/20

6:40 am-5:37 pm

2 stops17h 57m

$963

ChicagoDüsseldorf

MDW - DUS

MDWDUS

Chicago Midway

Fri 12/19

1:00 pm-7:40 am

2 stops11h 40m

Duesseldorf Intl

Sat 1/3

8:15 am-4:23 pm

2 stops15h 08m

$2,078

ChicagoDüsseldorf

ORD - DUS

ORDDUS

Chicago O'Hare Intl

Sat 7/19

6:15 pm-10:20 pm

2 stops45h 05m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 19 results
1
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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 June 27, 2025.

Booking 42 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 $1,090). 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 July 3, 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 July 3, 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 July 3, 2025.
Read through reviews of airlines operating flights from Chicago to Bonn, such as Delta, KLM, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.3
Good
1,416 reviews
Delta
8.0
Very good
7,982 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Chicago to Bonn one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as $328. Users have also found prices from $360 and $383 on British Airways and Air Canada, 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 Lufthansa (63%), Air Canada (57%) or United Airlines (57%) 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 $5,441 for a flight from Chicago to Bonn. The cheapest flight overall is $429 while the most popular route, (Chicago O'Hare Intl - Duesseldorf Intl) is currently priced at $521.

  • 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 $1,090). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$881FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$264Average$630FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$453Average$683FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$492Average$754FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$505Average$864FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$560Average$741FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$591Average$802FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$609Average$697FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$610Average$1,046FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$631Average$931FlexibilityNo cancel feeOn-time76%

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