Which airlines fly to Klagenfurt?

When flying to Klagenfurt from United States, momondo travelers will most often fly with that one popular airline: Lufthansa. Depending on what airport in United States you fly from, you may be able to find flights with that popular airline.

$584 Cheap Flights to Klagenfurt in 2025/26

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Find the cheapest flights from the United States to Klagenfurt

Round-trip

One-way

Cheap round-trip flights

12:39 pm - 1:55 pmMIA-KLU

19h 16m2 stops

2:40 pm - 2:40 pmKLU-MIA

54h 00m2 stops

$792Austrian Airlines

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Wed, Nov 12 - Sun, Nov 16

12:39 pm - 11:25 pmMIA-KLU

28h 46m2 stops

2:50 pm - 7:08 pmKLU-MIA

34h 18m2 stops

$821Austrian Airlines

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Thu, Nov 13 - Mon, Nov 17

6:15 am - 1:55 pmBOS-KLU

26h 40m2 stops

5:45 am - 9:27 pmKLU-BOS

21h 42m2 stops

$823Air Canada

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Fri, Mar 27 - Tue, Mar 31

3:00 pm - 1:55 pmSEA-KLU

14h 55m2 stops

3:00 pm - 11:55 amKLU-SEA

29h 55m2 stops

$838Lufthansa

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Fri, Mar 27 - Tue, Mar 31

3:00 pm - 1:55 pmSEA-KLU

14h 55m2 stops

3:00 pm - 11:55 amKLU-SEA

29h 55m2 stops

$839Lufthansa

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Fri, Mar 27 - Tue, Mar 31

5:35 pm - 11:25 pmBOS-KLU

23h 50m2 stops

2:50 pm - 3:50 pmKLU-BOS

31h 00m2 stops

$853Multiple Airlines

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Thu, Nov 13 - Thu, Nov 20

7:25 pm - 1:55 pmBOS-KLU

13h 30m1 stop

3:00 pm - 1:50 pmKLU-BOS

28h 50m1 stop

$916Austrian Airlines

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Fri, Mar 27 - Tue, Mar 31

8:30 am - 1:55 pmSFO-KLU

20h 25m2 stops

5:45 am - 9:34 pmKLU-SFO

24h 49m2 stops

$919Air Canada

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Fri, Nov 14 - Tue, Nov 18

7:25 pm - 1:55 pmBOS-KLU

13h 30m1 stop

5:45 am - 5:25 pmKLU-BOS

17h 40m2 stops

$926Austrian Airlines

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Fri, Mar 27 - Tue, Mar 31

3:40 pm - 1:55 pmBOS-KLU

16h 15m3 stops

5:45 am - 9:32 amKLU-BOS

33h 47m2 stops

$936Multiple Airlines

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Thu, Nov 13 - Thu, Nov 20

Fly from

Route

Depart

Return

Price

MiamiKlagenfurt

MIA - KLU

MIAKLU

Miami

Wed 11/12

12:39 pm-1:55 pm

2 stops19h 16m

Klagenfurt

Sun 11/16

2:40 pm-2:40 pm

2 stops54h 00m

$792

MiamiKlagenfurt

MIA - KLU

MIAKLU

Miami

Thu 11/13

12:39 pm-11:25 pm

2 stops28h 46m

Klagenfurt

Mon 11/17

2:50 pm-7:08 pm

2 stops34h 18m

$821

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 3/27

6:15 am-1:55 pm

2 stops26h 40m

Klagenfurt

Tue 3/31

5:45 am-9:27 pm

2 stops21h 42m

$823

SeattleKlagenfurt

SEA - KLU

SEAKLU

Seattle/Tacoma Intl

Fri 3/27

3:00 pm-1:55 pm

2 stops14h 55m

Klagenfurt

Tue 3/31

3:00 pm-11:55 am

2 stops29h 55m

$838

SeattleKlagenfurt

SEA - KLU

SEAKLU

Seattle/Tacoma Intl

Fri 3/27

3:00 pm-1:55 pm

2 stops14h 55m

Klagenfurt

Tue 3/31

3:00 pm-11:55 am

2 stops29h 55m

$839

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Thu 11/13

5:35 pm-11:25 pm

2 stops23h 50m

Klagenfurt

Thu 11/20

2:50 pm-3:50 pm

2 stops31h 00m

$853

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 3/27

7:25 pm-1:55 pm

1 stop13h 30m

Klagenfurt

Tue 3/31

3:00 pm-1:50 pm

1 stop28h 50m

$916

San FranciscoKlagenfurt

SFO - KLU

SFOKLU

San Francisco

Fri 11/14

8:30 am-1:55 pm

2 stops20h 25m

Klagenfurt

Tue 11/18

5:45 am-9:34 pm

2 stops24h 49m

$919

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 3/27

7:25 pm-1:55 pm

1 stop13h 30m

Klagenfurt

Tue 3/31

5:45 am-5:25 pm

2 stops17h 40m

$926

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Thu 11/13

3:40 pm-1:55 pm

3 stops16h 15m

Klagenfurt

Thu 11/20

5:45 am-9:32 am

2 stops33h 47m

$936

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 Miami, and flying into Klagenfurt, then you can expect flight times to average 20h 05m and 19h 25m, respectively.

Cheap Klagenfurt flight deals and tips

Summary info about Klagenfurt flight prices, duration and airlines

Best One-Way Price	$584
Best Round-Trip Price	$792
Fastest flight time	17h 20m

The best one-way flight price to Klagenfurt from United States in the last 72 hours is $584 (Seattle/Tacoma Intl to Klagenfurt).

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The best round-trip flight price to Klagenfurt from United States in the last 72 hours is $792 (Miami to Klagenfurt).

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The fastest flight to Klagenfurt from United States takes 17h 20m (Seattle/Tacoma 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).

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 September 2025, 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.