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Klagenfurt

$1,160+ Cheap flights from Boston (BOS) to Klagenfurt (KLU)

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KLU
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Boston to Klagenfurt

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Klagenfurt (KLU). 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 October 28, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$882
(Air Canada)
Provider with most accurate pricing for Boston Logan Intl-Klagenfurt flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Klagenfurt flights.
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From Boston Logan Intl to Klagenfurt
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Find flight deals from Boston to Klagenfurt

Cheapest flights from Boston to Klagenfurt
Explore the most affordable flight options available from Boston to Klagenfurt. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 12/1310:25 pmBOS - KLU
3 stops19h 00mMultiple Airlines
Sat 12/279:30 amKLU - BOS
3 stops40h 40mMultiple Airlines
Deal found 10/28$1,177
This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/133:40 pmBOS - KLU
2 stops16h 15mMultiple Airlines
Sun 12/283:15 pmKLU - BOS
2 stops52h 10mMultiple Airlines
Deal found 10/26$2,100
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:35 pmBOS - KLU
2 stops39h 20mMultiple Airlines
Sun 12/283:15 pmKLU - BOS
2 stops34h 27mMultiple Airlines
Deal found 10/28$2,604
This Flightnetwork deal was found by Cheapflights users on 10/28. 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.
Sat 12/138:40 pmBOS - KLU
2 stops11h 15mLufthansa
Sat 12/274:00 pmKLU - BOS
2 stops51h 25mLufthansa
Deal found 10/28$2,856

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Klagenfurt 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 October 28, 2025.
Use the filters below to find and compare flights from Boston to Klagenfurt that are best for you.

Fly from

Boston

Fly to

Klagenfurt

Route

Depart

Return

Price

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 12/13

10:25 pm-11:25 pm

2 stops19h 00m

Klagenfurt

Sat 12/27

9:30 am-8:10 pm

3 stops40h 40m

$1,254

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 12/13

3:40 pm-1:55 pm

2 stops16h 15m

Klagenfurt

Sun 12/28

3:15 pm-1:25 pm

2 stops52h 10m

$2,100

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sun 12/14

4:35 pm-1:55 pm

2 stops39h 20m

Klagenfurt

Sun 12/28

3:15 pm-7:42 pm

2 stops34h 27m

$2,604

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 12/13

8:40 pm-11:25 pm

2 stops20h 45m

Klagenfurt

Sun 12/28

3:15 pm-6:35 pm

2 stops33h 20m

$4,065

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 12/13

7:50 pm-11:25 pm

3 stops21h 35m

$1,160

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

  • Most accurate provider: When it comes to deals on Boston-Klagenfurt flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Boston-Klagenfurt flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Boston-Klagenfurt flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Klagenfurt 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-Klagenfurt 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 Klagenfurt

Have a flexible travel schedule? Discover the best time to fly to Klagenfurt 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.

Related info for your journey

Find useful and relevant information for your journey from Boston to Klagenfurt. 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 Klagenfurt that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Klagenfurt by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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