BOS - KLU

$1,194 Find Cheap Flights from Boston to Klagenfurt - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,193
Typical prices: $1,194-$1,521
Air Canada
Thu 12/6Thu 12/13
BOS - KLU • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Boston and Klagenfurt. You'll need to take a connecting flight to reach the destination.
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Cheap Flights from Boston to Klagenfurt (BOS-KLU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Klagenfurt

Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
6:00 pm - 10:55 amBOS  Boston Logan Intl-KLU Klagenfurt
34h 55m3 stops Lisbon Humberto Delgado Barcelona-El Prat Vienna Intl
Multiple Airlines Logo
11:15 am - 2:40 pmKLU  Klagenfurt-BOS Boston Logan Intl
33h 25m3 stops Vienna Intl Brussels Bruxelles-National Lisbon Humberto Delgado
$1,194Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
3:10 pm - 10:55 amBOS  Boston Logan Intl-KLU Klagenfurt
13h 45m2 stops Toronto Pearson Intl Vienna Intl
Multiple Airlines Logo
11:15 am - 6:35 pmKLU  Klagenfurt-BOS Boston Logan Intl
13h 20m2 stops Vienna Intl Munich Franz Josef Strauss
$1,203Multiple Airlines
Fri, Dec 4 - Fri, Dec 11
Multiple Airlines Logo
6:00 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
34h 30m3 stops Lisbon Humberto Delgado London Heathrow Vienna Intl
Multiple Airlines Logo
1:00 pm - 2:55 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 55m3 stops Cologne Köln/Bonn Barcelona-El Prat Lisbon Humberto Delgado
$1,217Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
11:15 am - 10:55 amBOS  Boston Logan Intl-KLU Klagenfurt
17h 40m2 stops Toronto Pearson Intl Vienna Intl
Multiple Airlines Logo
11:15 am - 11:59 pmKLU  Klagenfurt-BOS Boston Logan Intl
18h 44m3 stops Vienna Intl Munich Franz Josef Strauss Washington, D.C. Dulles Intl
$1,240Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Austrian Airlines Logo
6:55 pm - 10:55 amBOS  Boston Logan Intl-KLU Klagenfurt
10h 00m1 stop Vienna Intl
Austrian Airlines Logo
11:15 am - 5:41 pmKLU  Klagenfurt-BOS Boston Logan Intl
36h 26m2 stops Vienna Intl Newark
$1,242Austrian Airlines
Fri, Dec 4 - Fri, Dec 11
Lufthansa Logo
8:40 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
31h 50m2 stops Munich Franz Josef Strauss Vienna Intl
Lufthansa Logo
11:15 am - 6:35 pmKLU  Klagenfurt-BOS Boston Logan Intl
13h 20m2 stops Vienna Intl Munich Franz Josef Strauss
$1,344Lufthansa
Fri, Dec 4 - Fri, Dec 11
Multiple Airlines Logo
7:40 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
32h 50m3 stops Toronto Pearson Intl London Heathrow Vienna Intl
Multiple Airlines Logo
11:15 am - 9:50 pmKLU  Klagenfurt-BOS Boston Logan Intl
16h 35m2 stops Vienna Intl London Heathrow
$1,551Multiple Airlines
Thu, Nov 5 - Mon, Nov 9
Austrian Airlines Logo
2:40 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
13h 50m2 stops Washington, D.C. Dulles Intl Vienna Intl
Austrian Airlines Logo
11:40 am - 1:30 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 50m1 stop Vienna Intl
$2,292Austrian Airlines
Thu, Nov 5 - Mon, Nov 9
Lufthansa Logo
4:05 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
12h 25m2 stops Frankfurt am Main Vienna Intl
Lufthansa Logo
11:40 am - 1:45 pmKLU  Klagenfurt-BOS Boston Logan Intl
32h 05m2 stops Vienna Intl Frankfurt am Main
$2,368Lufthansa
Booking Insights

Price, demand and travel trends for Boston to Klagenfurt flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Boston to Klagenfurt?

Austrian Airlines ($1,242) and Lufthansa ($1,344) are the cheapest airlines to fly round-trip from Boston to Klagenfurt according to KAYAK data over the last 5 days.

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Key details for Boston to Klagenfurt flights

Cheapest flight

$1,193
Round-trip flight from Boston to Klagenfurt

When to book flights from Boston to Klagenfurt

Are your dates flexible? Find out the best times to travel from Boston to Klagenfurt based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boston to Klagenfurt flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Boston to Klagenfurt?

    Only Economy Class is available on flights from Boston to Klagenfurt.

  • How long is a flight from Boston to Klagenfurt?

    A nonstop flight from Boston to Klagenfurt takes 00m, covering 3,998 miles.

  • Do I need a passport to fly from Boston to Klagenfurt?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Boston to Klagenfurt changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,193 to $2,368. That means the highest observed fare was about 98% higher than the lowest one.

  • What car rental options are available at Klagenfurt Airport (KLU)?

    Klagenfurt Airport (KLU) hosts 5 major car rental companies, with daily rates starting from around $22 for economy cars. Top options include:

    • Sixt
    • Europcar
    • Budget
    • Thrifty
    • Hertz

  • Which airports can I use when flying from Boston to Klagenfurt?

    Flights from Boston to Klagenfurt usually depart from Boston Logan Intl (BOS) and arrive at Klagenfurt (KLU).

  • Can I save money by using flexible dates for flights from Boston to Klagenfurt?

    Yes. Flexible dates can save you up to 22% on flights from Boston to Klagenfurt. Monday is the cheapest departure day at $1,194 round-trip on average, while Saturday is the most expensive at $1,521, a difference of $327.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Boston and Klagenfurt?

    Klagenfurt is 6 hours ahead of Boston (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Boston to Klagenfurt flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Saturday. On this route, Monday flights average $1,194, about $327 less than Saturday fares (21% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Klagenfurt Airport.

    • Hotel Aragia
    • Pension Zlami

More options for your flight from Boston to Klagenfurt

Complete your trip to Klagenfurt with a hotel stay or car rental

Car rentals in Klagenfurt
Hotels in Klagenfurt