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Klagenfurt

$323+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KLU
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
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 noviembre 6, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$713
(Ovago)

One-way from

$323
(Kiwi.com)
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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One-way flight from Boston Logan Intl to Klagenfurt
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Find flight deals from Boston to Klagenfurt

Best flights from Boston to Klagenfurt
Discover carefully curated flight deals from Boston to Klagenfurt that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated noviembre 6, 2025.

This Ovago deal was found by Cheapflights users on 11/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/101:30 pmBOS - KLU
2 stops18h 20mAustrian Airlines
vie. 2/206:00 amKLU - BOS
1 stop14h 05mAustrian Airlines
Deal found 11/5$713
This Gurufare deal was found by Cheapflights users on 11/5. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/118:40 pmBOS - KLU
2 stops11h 10mMultiple Airlines
vie. 2/206:00 amKLU - BOS
2 stops17h 21mMultiple Airlines
Deal found 11/5$756
This Air Canada deal was found by Cheapflights users on 11/5. 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.
sáb. 2/1410:15 amBOS - KLU
2 stops18h 20mAir Canada
lun. 2/236:00 amKLU - BOS
2 stops38h 52mAir Canada
Deal found 11/5$835
This KAYAK deal was found by Cheapflights users on 11/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/124:15 pmBOS - KLU
2 stops15h 35mLufthansa
jue. 2/193:15 pmKLU - BOS
2 stops28h 20mLufthansa
Deal found 11/5$853
This Ovago deal was found by Cheapflights users on 11/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/111:30 pmBOS - KLU
2 stops18h 20mAustrian Airlines
vie. 2/206:00 amKLU - BOS
1 stop14h 05mAustrian Airlines
Deal found 11/5$713
This KAYAK deal was found by Cheapflights users on 11/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/81:24 pmBOS - KLU
2 stops18h 26mAustrian Airlines
vie. 2/206:00 amKLU - BOS
1 stop14h 05mAustrian Airlines
Deal found 11/5$719
This KAYAK deal was found by Cheapflights users on 11/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/108:40 pmBOS - KLU
2 stops11h 10mMultiple Airlines
vie. 2/206:00 amKLU - BOS
2 stops13h 35mMultiple Airlines
Deal found 11/5$813
This United deal was found by Cheapflights users on 11/5. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/119:30 amBOS - KLU
2 stops22h 20mMultiple Airlines
sáb. 2/214:00 pmKLU - BOS
2 stops51h 35mMultiple Airlines
Deal found 11/5$827
This Austrian Airlines deal was found by Cheapflights users on 11/6. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/277:25 pmBOS - KLU
1 stop13h 30mAustrian Airlines
mar. 3/313:00 pmKLU - BOS
1 stop28h 50mAustrian Airlines
Deal found 11/6$1,064

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 noviembre 6, 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

mar. 2/10

1:30 pm-1:50 pm

2 stops18h 20m

Klagenfurt

vie. 2/20

6:00 am-2:05 pm

1 stop14h 05m

$713

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

mié. 2/11

1:30 pm-1:50 pm

2 stops18h 20m

Klagenfurt

vie. 2/20

6:00 am-2:05 pm

1 stop14h 05m

$713

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

dom. 2/8

1:24 pm-1:50 pm

2 stops18h 26m

Klagenfurt

vie. 2/20

6:00 am-2:05 pm

1 stop14h 05m

$719

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

mié. 2/11

8:40 pm-1:50 pm

2 stops11h 10m

Klagenfurt

vie. 2/20

6:00 am-5:21 pm

2 stops17h 21m

$756

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

mar. 2/10

8:40 pm-1:50 pm

2 stops11h 10m

Klagenfurt

vie. 2/20

6:00 am-1:35 pm

2 stops13h 35m

$813

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

mié. 2/11

9:30 am-1:50 pm

2 stops22h 20m

Klagenfurt

sáb. 2/21

4:00 pm-1:35 pm

2 stops51h 35m

$827

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

sáb. 2/14

10:15 am-10:35 am

2 stops18h 20m

Klagenfurt

lun. 2/23

6:00 am-2:52 pm

2 stops38h 52m

$835

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

jue. 2/12

4:15 pm-1:50 pm

2 stops15h 35m

Klagenfurt

jue. 2/19

3:15 pm-1:35 pm

2 stops28h 20m

$853

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

vie. 3/27

7:25 pm-1:55 pm

1 stop13h 30m

Klagenfurt

mar. 3/31

3:00 pm-1:50 pm

1 stop28h 50m

$1,064

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

vie. 12/12

7:25 pm-9:20 am

2 stops55h 55m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 11 results
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  • 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.

  • How long is the flight from Boston to Klagenfurt?

    Airlines like Austrian Airlines fly from Boston to Klagenfurt in about 18h 20m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 3998 mi.

  • 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.

See more FAQs

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