Which airlines fly to Klagenfurt?

When flying to Klagenfurt from United States, momondo travelers will most often fly with one of these popular airlines: Lufthansa or Austrian Airlines. Depending on what airport in United States you fly from, you may be able to find flights with any of these popular airlines.

$798 Cheap Flights to Klagenfurt in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United States to Klagenfurt

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:05 pm - 11:15 am

JFK

KLU

55h 10m

2 stops

11:55 am - 3:55 pm

KLU

JFK

34h 00m

1 stop

$798Multiple Airlines

Wed, Apr 22 - Sat, May 2

6:00 am - 2:00 pm

BOS

KLU

26h 00m

3 stops

3:00 pm - 12:10 pm

KLU

BOS

27h 10m

2 stops

$1,151Multiple Airlines

Wed, May 13 - Wed, May 20

8:55 pm - 2:00 pm

BOS

KLU

35h 05m

3 stops

3:00 pm - 3:00 pm

KLU

BOS

30h 00m

3 stops

$1,165Multiple Airlines

Wed, May 13 - Wed, May 20

5:50 am - 2:00 pm

BOS

KLU

26h 10m

2 stops

3:00 pm - 2:47 pm

KLU

BOS

53h 47m

2 stops

$1,234Multiple Airlines

Wed, May 13 - Wed, May 20

10:40 am - 2:00 pm

JFK

KLU

21h 20m

2 stops

3:00 pm - 8:05 pm

KLU

JFK

11h 05m

1 stop

$1,274Multiple Airlines

Wed, May 13 - Wed, May 20

9:45 pm - 2:00 pm

JFK

KLU

10h 15m

1 stop

3:00 pm - 8:05 pm

KLU

JFK

11h 05m

1 stop

$1,305Austrian Airlines

Wed, May 13 - Wed, May 20

9:00 am - 2:00 pm

JFK

KLU

23h 00m

2 stops

5:50 am - 10:00 am

KLU

JFK

34h 10m

2 stops

$1,347Air Canada

Wed, Apr 22 - Fri, May 1

9:00 am - 2:00 pm

JFK

KLU

23h 00m

2 stops

5:50 am - 9:47 pm

KLU

JFK

21h 57m

2 stops

$1,392Air Canada

Wed, Apr 22 - Mon, May 4

5:30 pm - 2:00 pm

JFK

KLU

38h 30m

2 stops

3:00 pm - 3:00 pm

KLU

JFK

30h 00m

2 stops

$1,405Lufthansa

Wed, May 13 - Wed, May 20

9:45 pm - 2:00 pm

JFK

KLU

10h 15m

1 stop

3:00 pm - 8:05 pm

KLU

JFK

11h 05m

1 stop

$1,412Austrian Airlines

Wed, Apr 22 - Sun, May 3

Fly from

Route

Depart

Return

Price

Cheapest round-trip

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 4/22

10:05 pm-11:15 am

2 stops55h 10m

Klagenfurt

Sat 5/2

11:55 am-3:55 pm

1 stop34h 00m

$798

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 5/13

6:00 am-2:00 pm

3 stops26h 00m

Klagenfurt

Wed 5/20

3:00 pm-12:10 pm

2 stops27h 10m

$1,151

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 5/13

8:55 pm-2:00 pm

3 stops35h 05m

Klagenfurt

Wed 5/20

3:00 pm-3:00 pm

3 stops30h 00m

$1,165

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 5/13

5:50 am-2:00 pm

2 stops26h 10m

Klagenfurt

Wed 5/20

3:00 pm-2:47 pm

2 stops53h 47m

$1,234

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 5/13

10:40 am-2:00 pm

2 stops21h 20m

Klagenfurt

Wed 5/20

3:00 pm-8:05 pm

1 stop11h 05m

$1,274

Quickest round-trip

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 5/13

9:45 pm-2:00 pm

1 stop10h 15m

Klagenfurt

Wed 5/20

3:00 pm-8:05 pm

1 stop11h 05m

$1,305

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 4/22

9:00 am-2:00 pm

2 stops23h 00m

Klagenfurt

Fri 5/1

5:50 am-10:00 am

2 stops34h 10m

$1,347

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 4/22

9:00 am-2:00 pm

2 stops23h 00m

Klagenfurt

Mon 5/4

5:50 am-9:47 pm

2 stops21h 57m

$1,392

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 5/13

5:30 pm-2:00 pm

2 stops38h 30m

Klagenfurt

Wed 5/20

3:00 pm-3:00 pm

2 stops30h 00m

$1,405

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 4/22

9:45 pm-2:00 pm

1 stop10h 15m

Klagenfurt

Sun 5/3

3:00 pm-8:05 pm

1 stop11h 05m

$1,412

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

Klagenfurt flights insights and trends

Explore insights for your Klagenfurt flight to craft the best travel plan

How long does it take to fly to Klagenfurt?

If you’re flying from a popular airport in United States, such as Los Angeles or San Francisco, and flying into Klagenfurt, then you can expect flight times to average 16h 20m and 18h 25m, respectively.

Cheap Klagenfurt flight deals and tips

Summary info about Klagenfurt flight prices, duration and airlines

Best One-Way Price	$914
Best Round-Trip Price	$798
Fastest flight time	26h 10m

The best one-way flight price to Klagenfurt from United States in the last 72 hours is $914 (Boston Logan Intl to Klagenfurt).

Search Deals

The best round-trip flight price to Klagenfurt from United States in the last 72 hours is $798 (New York John F Kennedy Intl to Klagenfurt).

Search Deals

The fastest flight to Klagenfurt from United States takes 26h 10m (Boston Logan Intl to Klagenfurt).

Search Deals

Frequently asked questions about flying to Klagenfurt

Is there an alternative airport near Klagenfurt?

Finding an alternative and possibly cheaper destination airport near Klagenfurt is possible. If you are planning a flight to Klagenfurt, consider booking flights to Klagenfurt Airport (2 mi from Klagenfurt city center).

When did momondo last update prices for flights to Klagenfurt Airport?

Prices for flights to Klagenfurt Airport refresh daily.

How many operators does momondo search for flights to Klagenfurt Airport?

As of March 2026, there is 1 operator available to choose from for flights to Klagenfurt Airport.

How old do you have to be to fly 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 to Klagenfurt Airport.

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

The required travel and health documents for your Klagenfurt Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Klagenfurt Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Bad Kleinkirchheim

Why use momondo?

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

Finding the right flight to Klagenfurt is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Klagenfurt quick and easy, saving you time and money.

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

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

How can momondo help me find flights to Klagenfurt?

Once you have performed a search for flights to Klagenfurt, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight to Klagenfurt now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to Klagenfurt and let you know when they change.