What is the cheapest day to fly from Boston to Klagenfurt?

Travelers seeking maximum savings on their Boston to Klagenfurt flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Klagenfurt ranges from 1.6 - 4.3 inches per month. June is typically the wettest month, when rainfall can reach 4.3 in. January is typically the driest time to visit Klagenfurt when rainfall is around 1.6 in.

If weather is an important factor for your trip to Klagenfurt, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

What is the cheapest time of day to fly from BOS to KLU?

When flying from Boston to Klagenfurt, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

$1,353+ Flights from Boston to Klagenfurt

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Cheap flight deals from Boston to Klagenfurt

Round-trip from	$1,353 (Lufthansa)

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 July 30, 2025.

Sun 8/108:05 pmBOS - KLU

2 stops21h 20mLufthansa

Sun 8/173:00 pmKLU - BOS

2 stops54h 40mLufthansa

Deal found 7/29

$1,353

Sun 8/1012:03 pmBOS - KLU

2 stops29h 22mAustrian Airlines

Sun 8/173:00 pmKLU - BOS

1 stop28h 50mAustrian Airlines

Deal found 7/29

$2,885

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 July 30, 2025.

Sun 8/108:05 pmBOS - KLU

2 stops21h 20mLufthansa

Sun 8/173:00 pmKLU - BOS

2 stops54h 40mLufthansa

Deal found 7/29

$1,353

Sun 8/1012:03 pmBOS - KLU

2 stops29h 22mAustrian Airlines

Sun 8/173:00 pmKLU - BOS

1 stop28h 50mAustrian Airlines

Deal found 7/29

$2,885

Last-minute flights from Boston to Klagenfurt
Discover last-minute flight deals from Boston to Klagenfurt. Data last updated July 30, 2025 and is based on user searches.

Sun 8/108:05 pmBOS - KLU

2 stops21h 20mLufthansa

Sun 8/173:00 pmKLU - BOS

2 stops54h 40mLufthansa

Deal found 7/29

$1,353

Sun 8/1012:03 pmBOS - KLU

2 stops29h 22mAustrian Airlines

Sun 8/173:00 pmKLU - BOS

1 stop28h 50mAustrian Airlines

Deal found 7/29

$2,885

Fly from

Fly to

Route

Depart

Return

Price

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sun 8/10

8:05 pm-11:25 pm

2 stops21h 20m

Klagenfurt

Sun 8/17

3:00 pm-3:40 pm

2 stops54h 40m

$1,353

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sun 8/10

12:03 pm-11:25 pm

2 stops29h 22m

Klagenfurt

Sun 8/17

3:00 pm-1:50 pm

1 stop28h 50m

$2,885

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.

Reviews of airlines servicing Klagenfurt

Get a feel of what it's like to fly with Austrian Airlines and Lufthansa from Boston to Klagenfurt by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Austrian Airlines

7.6

Good

823 reviews

Reviews

1 / 20

10.0

Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!

Austrian Airlines

7.6

Good

823 reviews

Austrian Airlines

7.6

Good

823 reviews

Reviews

1 / 20

10.0

Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!

Lufthansa

6.8

Okay

7,269 reviews

Austrian Airlines

7.6

Good

823 reviews

Reviews

1 / 20

10.0

Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!

Related info for your journey

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.

Browse thousands of different options on Cheapflights for your next trip

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$1,353+ Cheap flights from Boston (BOS) to Klagenfurt (KLU)

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to Klagenfurt with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boston to Klagenfurt

Round-trip from

Find flight deals from Boston to Klagenfurt

Cheapest flights from Boston to KlagenfurtExplore 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 July 30, 2025.

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 July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Klagenfurt that are best for you.

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.

Reviews of airlines servicing Klagenfurt

Get a feel of what it's like to fly with Austrian Airlines and Lufthansa from Boston to Klagenfurt by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

How can I find direct flights from Boston to Klagenfurt?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Klagenfurt

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Book with Flexibility

Travel Smart

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 July 30, 2025.