Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Boston to Klagenfurt from $1,132

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 10/23. 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
6:50 pm - 3:00 pm
BOS
-
KLU
38h 10m
2 stops
Multiple Airlines Logo
2:50 pm - 2:30 pm
KLU
-
BOS
28h 40m
1 stop
$1,132Multiple Airlines
Fri, Oct 23 - Sat, Oct 31
Multiple Airlines Logo
6:50 pm - 12:25 am
BOS
-
KLU
47h 35m
2 stops
Multiple Airlines Logo
2:50 pm - 7:35 pm
KLU
-
BOS
33h 45m
2 stops
$1,161Multiple Airlines
Fri, Oct 23 - Sat, Oct 31
Air Canada Logo
3:35 pm - 2:00 pm
BOS
-
KLU
16h 25m
3 stops
Air Canada Logo
5:45 am - 9:28 pm
KLU
-
BOS
20h 43m
2 stops
$1,520Air Canada
Fri, Oct 23 - Sat, Oct 31
Multiple Airlines Logo
3:35 pm - 2:00 pm
BOS
-
KLU
16h 25m
3 stops
Multiple Airlines Logo
3:10 pm - 3:40 pm
KLU
-
BOS
29h 30m
3 stops
$1,883Multiple Airlines
Fri, Oct 23 - Sat, Oct 31
Multiple Airlines Logo
3:35 pm - 11:20 pm
BOS
-
KLU
25h 45m
2 stops
Multiple Airlines Logo
3:00 pm - 6:07 pm
KLU
-
BOS
33h 07m
2 stops
$2,426Multiple Airlines
Tue, Oct 6 - Tue, Oct 20
Austrian Airlines Logo
9:35 am - 2:00 pm
BOS
-
KLU
22h 25m
2 stops
Austrian Airlines Logo
3:00 pm - 1:50 pm
KLU
-
BOS
28h 50m
1 stop
$2,666Austrian Airlines
Tue, Oct 6 - Tue, Oct 20
Multiple Airlines Logo
3:35 pm - 2:00 pm
BOS
-
KLU
16h 25m
2 stops
Multiple Airlines Logo
3:00 pm - 3:40 pm
KLU
-
BOS
30h 40m
3 stops
$5,433Multiple Airlines
Tue, Oct 6 - Tue, Oct 20
Austrian Airlines Logo
5:10 pm - 11:20 pm
BOS
-
KLU
24h 10m
1 stop
Austrian Airlines Logo
3:00 pm - 1:50 pm
KLU
-
BOS
28h 50m
1 stop
$5,562Austrian Airlines
Tue, Oct 6 - Tue, Oct 20

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Austrian Airlines flights from Boston to Klagenfurt

Our best Austrian Airlines deals on Boston to Klagenfurt flight tickets
Austrian Airlines
Oct 6
BOS9:35 amBoston Logan Intl
22h 25m
2 stops
KLU2:00 pmKlagenfurt
Oct 20
KLU3:00 pmKlagenfurt
28h 50m
1 stop
BOS1:50 pmBoston Logan Intl
$2,666
Austrian Airlines
Oct 6
BOS5:10 pmBoston Logan Intl
24h 10m
1 stop
KLU11:20 pmKlagenfurt
Oct 20
KLU3:00 pmKlagenfurt
28h 50m
1 stop
BOS1:50 pmBoston Logan Intl
$5,562

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 July 31, 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 - KLU

BOSKLU

Boston Logan Intl

Fri 10/23

6:50 pm-3:00 pm

2 stops38h 10m

Klagenfurt

Sat 10/31

2:50 pm-2:30 pm

1 stop28h 40m

$1,132

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 10/23

6:50 pm-12:25 am

2 stops47h 35m

Klagenfurt

Sat 10/31

2:50 pm-7:35 pm

2 stops33h 45m

$1,161
Quickest round-trip

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 10/23

3:35 pm-2:00 pm

3 stops16h 25m

Klagenfurt

Sat 10/31

5:45 am-9:28 pm

2 stops20h 43m

$1,520

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 10/23

3:35 pm-2:00 pm

3 stops16h 25m

Klagenfurt

Sat 10/31

3:10 pm-3:40 pm

3 stops29h 30m

$1,883

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

3:35 pm-11:20 pm

2 stops25h 45m

Klagenfurt

Tue 10/20

3:00 pm-6:07 pm

2 stops33h 07m

$2,426

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

9:35 am-2:00 pm

2 stops22h 25m

Klagenfurt

Tue 10/20

3:00 pm-1:50 pm

1 stop28h 50m

$2,666

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

3:35 pm-2:00 pm

2 stops16h 25m

Klagenfurt

Tue 10/20

3:00 pm-3:40 pm

3 stops30h 40m

$5,433

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

5:10 pm-11:20 pm

1 stop24h 10m

Klagenfurt

Tue 10/20

3:00 pm-1:50 pm

1 stop28h 50m

$5,562
Cheapest one-way
Quickest one-way

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

3:35 pm-2:00 pm

2 stops16h 25m

$1,423

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 10/6

5:10 pm-11:20 pm

1 stop24h 10m

$1,479

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

47h 35m

Direct flights

None
The fastest flight from Boston to Klagenfurt takes 47h 35m
There are no direct flights from Boston to Klagenfurt. There are no popular flight routes from Boston to Klagenfurt.
Search flight deals

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. 47h 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.

An easier way to manage your Klagenfurt trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/30
Sun 9/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Austria