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Karlsruhe

$303+ Cheap flights from Boston (BOS) to Karlsruhe (FKB)

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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — FKB
Jan 1 — Jan 81
Thu 1/1
Thu 1/8
1 adult, Economy
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Cheap flight deals from Boston to Karlsruhe

One-way flights from Boston to Karlsruhe
Search for one-way flight options from Boston to Karlsruhe. Find affordable one-way fares based on user searches. Data last updated December 2, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:05 pmBOS - FKB
3 stops21h 45mMultiple Airlines
Deal found 12/2$303

Find flight deals from Boston to Karlsruhe

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Karlsruhe (FKB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 2, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Popular in

April

Cheapest in

May

Average price

$853
Provider with most accurate pricing for Boston Logan Intl-Karlsruhe Söllingen flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Karlsruhe Söllingen flights.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Karlsruhe 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 2, 2025.
Use the filters below to find and compare flights from Boston to Karlsruhe that are best for you.

Fly from

Boston

Fly to

Karlsruhe

Route

Depart

Return

Price

BostonKarlsruhe

BOS - FKB

BOSFKB

Boston Logan Intl

Mon 3/30

6:05 pm-9:50 pm

3 stops21h 45m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

  • Most accurate provider: When it comes to deals on Boston-Karlsruhe flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Boston-Karlsruhe flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Boston-Karlsruhe flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Karlsruhe flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Karlsruhe flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Karlsruhe

Have a flexible travel schedule? Discover the best time to fly to Karlsruhe from Boston 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 Boston to Karlsruhe

What is the cheapest month to book a flight from Boston to Karlsruhe?

Currently, November is the cheapest month in which you can book a flight from Boston to Karlsruhe (average of $238). Flying from Boston to Karlsruhe in June is currently the most expensive (average of $595). 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.

Related info for your journey

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

  • Can I find deals for flights from Boston to Karlsruhe that include hotel bookings?

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

  • How can I find direct flights from Boston to Karlsruhe?

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

  • Can I find deals for business class flights from Boston to Karlsruhe?

    Yes. Cheapflights offers flight deals from Boston to Karlsruhe 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 Boston to Karlsruhe?

    Currently, November is the cheapest month in which you can book a flight from Boston to Karlsruhe (average of $238). Flying from Boston to Karlsruhe in June is currently the most expensive (average of $595). 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

Traveling to a place near Karlsruhe?

Book flights to Karlsruhe if you plan to visit one of these locations
Offenburg

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