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Bonn

$535+ Cheap flights from St. Louis (STL) to Bonn, Germany

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from St. Louis to Bonn

Best flights from St. Louis to Bonn
Discover carefully curated flight deals from St. Louis to Bonn that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

This AirNGo deal was found by Cheapflights users on 12/14. 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.
Fri 1/164:05 pmSTL - DUS
2 stops15h 35mAir Canada
Wed 1/212:30 pmDUS - STL
2 stops31h 59mAir Canada
Deal found 12/14$535
This Flightnetwork deal was found by Cheapflights users on 12/14. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/164:05 pmSTL - DUS
2 stops15h 35mMultiple Airlines
Wed 1/216:30 amDUS - STL
1 stop14h 25mMultiple Airlines
Deal found 12/14$552
This Booking.com deal was found by Cheapflights users on 12/14. 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.
Fri 1/163:50 pmSTL - DUS
1 stop19h 15mLufthansa
Wed 1/216:30 amDUS - STL
1 stop14h 25mLufthansa
Deal found 12/14$590
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Fri 1/303:50 pmSTL - DUS
1 stop19h 15mUnited Airlines
Tue 2/36:20 amDUS - STL
2 stops15h 10mUnited Airlines
Deal found 12/12$600
This Air Canada deal was found by Cheapflights users on 12/12. 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.
Fri 1/304:05 pmSTL - DUS
2 stops19h 00mAir Canada
Tue 2/310:50 amDUS - STL
2 stops35h 25mAir Canada
Deal found 12/12$580
This FlightHub deal was found by Cheapflights users on 12/14. 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 4/123:30 pmSTL - DUS
2 stops14h 10mLufthansa
Tue 4/2112:40 pmDUS - STL
2 stops15h 23mLufthansa
Deal found 12/14$880

Find flight deals from St. Louis to Bonn

Keep the following information in mind while searching for St. Louis to Bonn flight deals. Data was last updated December 15, 2025.

Round-trip from

$535
(AirNGo)

Popular in

July

Cheapest in

October
From Lambert-St Louis to Bonn
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($284 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis 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 15, 2025.
Use the filters below to find and compare flights from St. Louis to Bonn that are best for you.

Fly from

St. Louis

Fly to

Bonn

Route

Depart

Return

Price

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Fri 1/16

4:05 pm-2:40 pm

2 stops15h 35m

Duesseldorf Intl

Wed 1/21

2:30 pm-3:29 pm

2 stops31h 59m

$535

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Fri 1/16

4:05 pm-2:40 pm

2 stops15h 35m

Duesseldorf Intl

Wed 1/21

6:30 am-1:55 pm

1 stop14h 25m

$552

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Fri 1/30

4:05 pm-6:05 pm

2 stops19h 00m

Duesseldorf Intl

Tue 2/3

10:50 am-3:15 pm

2 stops35h 25m

$580

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Fri 1/16

3:50 pm-6:05 pm

1 stop19h 15m

Duesseldorf Intl

Wed 1/21

6:30 am-1:55 pm

1 stop14h 25m

$590

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Fri 1/30

3:50 pm-6:05 pm

1 stop19h 15m

Duesseldorf Intl

Tue 2/3

6:20 am-2:30 pm

2 stops15h 10m

$600

St. LouisDüsseldorf

STL - DUS

STLDUS

Lambert-St Louis

Sun 4/12

3:30 pm-12:40 pm

2 stops14h 10m

Duesseldorf Intl

Tue 4/21

12:40 pm-9:03 pm

2 stops15h 23m

$880

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Best time to book a flight from St. Louis to Bonn

Have a flexible travel schedule? Discover the best time to fly to Bonn from St. Louis 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 St. Louis to Bonn

What is the cheapest month to book a flight from St. Louis to Bonn?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Bonn (average of $650). Flying from St. Louis to Bonn in April is currently the most expensive (average of $883). 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 STL to BN9?

Find hourly flight availability from St. Louis 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 15, 2025.

One of the essential ways to save on airfare from St. Louis to Bonn is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 53% on airfare.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Bonn. 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 St. Louis to Bonn?

    For a flight from St. Louis to Bonn, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Bonn per day. 7 airlines have flights to Bonn from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Bonn?

    Air Canada can get you from St. Louis to Bonn in just under 15h 35m. Your travel time can differ by up to . The distance from St. Louis to Bonn is about 4466 mi.

  • What are the cheapest flights from St. Louis to Bonn?

    While on average a flight from St. Louis to Bonn is generally $1,664, our data shows the cheapest flight currently is $438. When looking at the most popular route, (Lambert-St Louis - Duesseldorf Intl), you can expect to pay $552 for that flight.

  • Can I find deals for flights from St. Louis to Bonn that include hotel bookings?

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

  • How can I find direct flights from St. Louis to Bonn?

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

  • Can I find deals for business class flights from St. Louis to Bonn?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Bonn?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Bonn (average of $650). Flying from St. Louis to Bonn in April is currently the most expensive (average of $883). 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 St. Louis to Bonn

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from St. Louis to Bonn

Discover the top 7 airlines that operate flights from St. Louis 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$488Average$1,024FlexibilityNo cancel feeOn-time71%
DeltaCheapest$610Average$1,099FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$693Average$969FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$776Average$1,135FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$821Average$1,339FlexibilityNo cancel feeOn-time76%
KLMCheapest$841Average$1,115FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$921Average$1,319FlexibilityNo cancel feeOn-time67%

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