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Cheap flights from Boston to Klagenfurt from $1,061

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Klagenfurt departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to Klagenfurt

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
11:40 am - 1:30 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 50m1 stop Vienna Intl
$1,061Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Multiple Airlines Logo
5:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
11:40 am - 1:30 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 50m1 stop Vienna Intl
$1,064Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Austrian Airlines Logo
6:55 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
9h 35m1 stop Vienna Intl
Austrian Airlines Logo
11:15 am - 5:25 pmKLU  Klagenfurt-BOS Boston Logan Intl
36h 10m2 stops Vienna Intl Newark
$1,065Austrian Airlines
Sun, Jan 3 - Sun, Jan 10
Multiple Airlines Logo
5:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
11:40 am - 10:37 pmKLU  Klagenfurt-BOS Boston Logan Intl
40h 57m2 stops Vienna Intl Toronto Pearson Intl
$1,069Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Austrian Airlines Logo
2:32 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
13h 58m2 stops Washington, D.C. Dulles Intl Vienna Intl
Austrian Airlines Logo
11:15 am - 5:25 pmKLU  Klagenfurt-BOS Boston Logan Intl
36h 10m2 stops Vienna Intl Newark
$1,070Austrian Airlines
Mon, Jan 4 - Sun, Jan 10
Multiple Airlines Logo
5:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
11:40 am - 1:30 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 50m1 stop Vienna Intl
$1,071Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Austrian Airlines Logo
2:40 pm - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
14h 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
$1,074Austrian Airlines
Wed, Oct 28 - Mon, Nov 2
Austrian Airlines Logo
9:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
20h 00m2 stops Washington, D.C. Dulles Intl Vienna Intl
Austrian Airlines Logo
11:40 am - 5:27 pmKLU  Klagenfurt-BOS Boston Logan Intl
35h 47m2 stops Vienna Intl Newark
$1,084Austrian Airlines
Wed, Oct 28 - Mon, Nov 2
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 - 1:45 pmKLU  Klagenfurt-BOS Boston Logan Intl
56h 30m2 stops Vienna Intl Frankfurt am Main
$1,088Lufthansa
Sun, Jan 3 - Sun, Jan 10
Multiple Airlines Logo
5:30 am - 10:30 amBOS  Boston Logan Intl-KLU Klagenfurt
24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
11:40 am - 1:30 pmKLU  Klagenfurt-BOS Boston Logan Intl
31h 50m1 stop Vienna Intl
$1,090Multiple Airlines
Thu, Oct 29 - Mon, Nov 2

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Austrian Airlines flights from Boston to Klagenfurt

Our best Austrian Airlines deals on Boston to Klagenfurt flight tickets
Austrian Airlines
Jan 3
BOS6:55 pmBoston Logan Intl
9h 35m
1 stop
KLU10:30 amKlagenfurt
Jan 10
KLU11:15 amKlagenfurt
36h 10m
2 stops
BOS5:25 pmBoston Logan Intl
$1,065
Austrian Airlines
Jan 4
BOS2:32 pmBoston Logan Intl
13h 58m
2 stops
KLU10:30 amKlagenfurt
Jan 10
KLU11:15 amKlagenfurt
36h 10m
2 stops
BOS5:25 pmBoston Logan Intl
$1,070
Austrian Airlines
Oct 28
BOS2:40 pmBoston Logan Intl
14h 50m
2 stops
KLU10:30 amKlagenfurt
Nov 2
KLU11:40 amKlagenfurt
31h 50m
1 stop
BOS1:30 pmBoston Logan Intl
$1,074

Lufthansa flights from Boston to Klagenfurt

Our best Lufthansa deals on Boston to Klagenfurt flight tickets
Lufthansa
Jan 3
BOS8:40 pmBoston Logan Intl
31h 50m
2 stops
KLU10:30 amKlagenfurt
Jan 10
KLU11:15 amKlagenfurt
56h 30m
2 stops
BOS1:45 pmBoston Logan Intl
$1,088
Lufthansa
Jan 1
BOS8:40 pmBoston Logan Intl
31h 50m
2 stops
KLU10:30 amKlagenfurt
Jan 10
KLU11:15 amKlagenfurt
56h 30m
2 stops
BOS1:45 pmBoston Logan Intl
$1,138
Lufthansa
Jan 3
BOS8:40 pmBoston Logan Intl
31h 50m
2 stops
KLU10:30 amKlagenfurt
Jan 8
KLU11:15 amKlagenfurt
56h 30m
2 stops
BOS1:45 pmBoston Logan Intl
$1,473

momondo 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, momondo users made 832,500 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Boston to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Thu 10/29

5:30 am-10:30 am

2 stops24h 00m

Klagenfurt

Mon 11/2

11:40 am-1:30 pm

1 stop31h 50m

$1,061

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Thu 10/29

5:30 am-10:30 am

2 stops24h 00m

Klagenfurt

Mon 11/2

11:40 am-1:30 pm

1 stop31h 50m

$1,064
Quickest round-trip

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Sun 1/3

6:55 pm-10:30 am

1 stop9h 35m

Klagenfurt

Sun 1/10

11:15 am-5:25 pm

2 stops36h 10m

$1,065

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Thu 10/29

5:30 am-10:30 am

2 stops24h 00m

Klagenfurt

Mon 11/2

11:40 am-10:37 pm

2 stops40h 57m

$1,069

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Mon 1/4

2:32 pm-10:30 am

2 stops13h 58m

Klagenfurt

Sun 1/10

11:15 am-5:25 pm

2 stops36h 10m

$1,070

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Thu 10/29

5:30 am-10:30 am

2 stops24h 00m

Klagenfurt

Mon 11/2

11:40 am-1:30 pm

1 stop31h 50m

$1,071

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Wed 10/28

2:40 pm-10:30 am

2 stops14h 50m

Klagenfurt

Mon 11/2

11:40 am-1:30 pm

1 stop31h 50m

$1,074

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Wed 10/28

9:30 am-10:30 am

2 stops20h 00m

Klagenfurt

Mon 11/2

11:40 am-5:27 pm

2 stops35h 47m

$1,084

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Sun 1/3

8:40 pm-10:30 am

2 stops31h 50m

Klagenfurt

Sun 1/10

11:15 am-1:45 pm

2 stops56h 30m

$1,088

BostonKlagenfurt

BOS Boston Logan Intl - KLU Klagenfurt

BOSKLU

Boston Logan Intl

Thu 10/29

5:30 am-10:30 am

2 stops24h 00m

Klagenfurt

Mon 11/2

11:40 am-1:30 pm

1 stop31h 50m

$1,090

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Boston to Klagenfurt

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Klagenfurt according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Klagenfurt (BOS to KLU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Klagenfurt

Fastest flight time

9h 35m

Direct flights

None
The fastest flight from Boston to Klagenfurt takes 9h 35m
There are no direct flights from Boston to Klagenfurt. There are no popular flight routes from Boston to Klagenfurt.
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Frequently asked questions about flying from Boston to Klagenfurt

  • How far is Boston Logan Intl to Klagenfurt by plane?

    A flight from Boston Logan Intl to Klagenfurt will travel around 4000.6 mi. 9h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Klagenfurt Airport?

    Prices for flights from Boston Logan Intl Airport to Klagenfurt Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Klagenfurt Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Klagenfurt Airport.

  • What documentation or ID do you need to fly to Klagenfurt Airport?

    The necessary travel and health documents for your Klagenfurt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Boston to Klagenfurt

  • How do I get Price Alerts for flights from Boston to Klagenfurt?

    Price Alerts will notify you by email when the price for flights to Klagenfurt from Boston decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Boston to Klagenfurt with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Bad Kleinkirchheim

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Klagenfurt?

It is quick and easy to find Boston to Klagenfurt flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Klagenfurt that suits you.

Can I find flights from Boston to Klagenfurt with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Klagenfurt flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Klagenfurt?

momondo helps you find the best flight between Boston and Klagenfurt by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Klagenfurt right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to Klagenfurt flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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