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, Austrian Airlines or SWISS. Depending on what airport in United States you fly from, you may be able to find flights with any of these popular airlines.

$931 Cheap Flights to Klagenfurt in 2026

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Find the cheapest flights from the United States to Klagenfurt

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:25 pm - 11:15 amJFK New York John F Kennedy Intl-KLU Klagenfurt

34h 50m2 stops Shannon London Heathrow

4:05 pm - 3:55 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

29h 50m1 stop London Stansted

$931Multiple Airlines

Thu, Sep 3 - Wed, Sep 16

6:20 pm - 2:00 pmJFK New York John F Kennedy Intl-KLU Klagenfurt

37h 40m2 stops London Gatwick Vienna Intl

4:05 pm - 3:55 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

29h 50m1 stop London Stansted

$954Multiple Airlines

Wed, Sep 2 - Wed, Sep 16

12:30 am - 3:10 pmJFK New York John F Kennedy Intl-KLU Klagenfurt

32h 40m2 stops Rome Fiumicino Palma de Mallorca Son Sant Joan

12:10 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

16h 20m1 stop Rome Fiumicino

$1,039Multiple Airlines

Sat, Aug 22 - Thu, Aug 27

5:30 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

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

5:30 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

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

2:40 pm - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

14h 50m2 stops Washington, D.C. Dulles Intl Vienna Intl

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

9:30 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

20h 00m2 stops Washington, D.C. Dulles Intl Vienna Intl

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

12:30 am - 11:25 amJFK New York John F Kennedy Intl-KLU Klagenfurt

28h 55m1 stop Rome Fiumicino

12:10 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

16h 20m1 stop Rome Fiumicino

$1,085Multiple Airlines

Tue, Sep 1 - Thu, Sep 17

7:00 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 30m1 stop Vienna Intl

11:40 am - 2:10 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

32h 30m1 stop Vienna Intl

$1,111Austrian Airlines

Wed, Oct 28 - Mon, Nov 2

6:20 pm - 4:50 pmJFK New York John F Kennedy Intl-KLU Klagenfurt

40h 30m2 stops London Gatwick Cologne Köln/Bonn

12:10 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

16h 20m1 stop Rome Fiumicino

$1,111Multiple Airlines

Wed, Sep 2 - Thu, Sep 17

Fly from

Route

Depart

Return

Price

Cheapest round-trip

New YorkKlagenfurt

JFK New York John F Kennedy Intl - KLU Klagenfurt

JFKKLU

New York John F Kennedy Intl

Thu 9/3

6:25 pm-11:15 am

2 stops34h 50m

Klagenfurt

Wed 9/16

4:05 pm-3:55 pm

1 stop29h 50m

$931

New YorkKlagenfurt

JFK New York John F Kennedy Intl - KLU Klagenfurt

JFKKLU

New York John F Kennedy Intl

Wed 9/2

6:20 pm-2:00 pm

2 stops37h 40m

Klagenfurt

Wed 9/16

4:05 pm-3:55 pm

1 stop29h 50m

$954

New YorkKlagenfurt

JFK New York John F Kennedy Intl - KLU Klagenfurt

JFKKLU

New York John F Kennedy Intl

Sat 8/22

12:30 am-3:10 pm

2 stops32h 40m

Klagenfurt

Thu 8/27

12:10 pm-10:30 pm

1 stop16h 20m

$1,039

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-10:37 pm

2 stops40h 57m

$1,069

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

New YorkKlagenfurt

JFK New York John F Kennedy Intl - KLU Klagenfurt

JFKKLU

New York John F Kennedy Intl

Tue 9/1

12:30 am-11:25 am

1 stop28h 55m

Klagenfurt

Thu 9/17

12:10 pm-10:30 pm

1 stop16h 20m

$1,085

Quickest round-trip

Washington, D.C.Klagenfurt

IAD Washington, D.C. Dulles Intl - KLU Klagenfurt

IADKLU

Washington, D.C. Dulles Intl

Wed 10/28

7:00 pm-10:30 am

1 stop10h 30m

Klagenfurt

Mon 11/2

11:40 am-2:10 pm

1 stop32h 30m

$1,111

New YorkKlagenfurt

JFK New York John F Kennedy Intl - KLU Klagenfurt

JFKKLU

New York John F Kennedy Intl

Wed 9/2

6:20 pm-4:50 pm

2 stops40h 30m

Klagenfurt

Thu 9/17

12:10 pm-10:30 pm

1 stop16h 20m

$1,111

Flights are sorted by cheapest round-trip flights first.

Sorted 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 30m and 13h 40m, respectively.

Cheap Klagenfurt flight deals and tips

Summary info about Klagenfurt flight prices, duration and airlines

Best Round-Trip Price	$931
Fastest flight time	10h 30m

The best round-trip flight price to Klagenfurt from United States in the last 5 days is $931 (New York John F Kennedy Intl to Klagenfurt).

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The fastest flight to Klagenfurt from United States takes 10h 30m (Washington, D.C. Dulles Intl to Klagenfurt).

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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).

Is there a cheaper alternative to flying into Klagenfurt?

With an average price of $45 per person, Klagenfurt Airport is the cheapest airport to fly into when planning your trip to Klagenfurt. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

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 August 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.

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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.