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.

$403 Cheap Flights to Klagenfurt in 2026

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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.

7:55 pm - 1:50 pm

BOS

KLU

36h 55m

2 stops

3:15 pm - 9:27 pm

KLU

BOS

35h 12m

2 stops

$866Multiple Airlines

Tue, Mar 17 - Tue, Mar 24

7:25 pm - 11:20 pm

BOS

KLU

22h 55m

1 stop

3:15 pm - 9:27 pm

KLU

BOS

35h 12m

2 stops

$921Multiple Airlines

Tue, Mar 17 - Tue, Mar 24

6:15 am - 2:00 pm

BOS

KLU

25h 45m

2 stops

5:45 am - 9:49 am

KLU

BOS

34h 04m

2 stops

$1,120Air Canada

Fri, Apr 3 - Tue, Apr 7

2:05 pm - 1:50 pm

LAX

KLU

39h 45m

3 stops

3:15 pm - 12:10 pm

KLU

LAX

52h 55m

3 stops

$1,180Multiple Airlines

Tue, Mar 17 - Sat, Mar 21

6:40 pm - 11:20 pm

LAX

KLU

20h 40m

2 stops

3:15 pm - 7:30 pm

KLU

LAX

36h 15m

3 stops

$1,419Multiple Airlines

Tue, Mar 17 - Sat, Mar 21

8:30 am - 1:50 pm

LAX

KLU

21h 20m

2 stops

3:15 pm - 7:27 pm

KLU

LAX

36h 12m

2 stops

$1,799Austrian Airlines

Tue, Mar 17 - Sat, Mar 21

11:30 am - 10:30 am

LAX

KLU

38h 00m

2 stops

5:50 am - 10:00 pm

KLU

LAX

24h 10m

2 stops

$1,910Air Canada

Thu, Mar 5 - Mon, Mar 9

11:30 am - 10:30 am

LAX

KLU

38h 00m

2 stops

5:50 am - 10:00 pm

KLU

LAX

24h 10m

2 stops

$1,911Air Canada

Thu, Mar 5 - Mon, Mar 9

Fly from

Route

Depart

Return

Price

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 3/17

7:55 pm-1:50 pm

2 stops36h 55m

Klagenfurt

Tue 3/24

3:15 pm-9:27 pm

2 stops35h 12m

$866

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Tue 3/17

7:25 pm-11:20 pm

1 stop22h 55m

Klagenfurt

Tue 3/24

3:15 pm-9:27 pm

2 stops35h 12m

$921

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Fri 4/3

6:15 am-2:00 pm

2 stops25h 45m

Klagenfurt

Tue 4/7

5:45 am-9:49 am

2 stops34h 04m

$1,120

Los AngelesKlagenfurt

LAX - KLU

LAXKLU

Los Angeles

Tue 3/17

2:05 pm-1:50 pm

3 stops39h 45m

Klagenfurt

Sat 3/21

3:15 pm-12:10 pm

3 stops52h 55m

$1,180

Los AngelesKlagenfurt

LAX - KLU

LAXKLU

Los Angeles

Tue 3/17

6:40 pm-11:20 pm

2 stops20h 40m

Klagenfurt

Sat 3/21

3:15 pm-7:30 pm

3 stops36h 15m

$1,419

Los AngelesKlagenfurt

LAX - KLU

LAXKLU

Los Angeles

Tue 3/17

8:30 am-1:50 pm

2 stops21h 20m

Klagenfurt

Sat 3/21

3:15 pm-7:27 pm

2 stops36h 12m

$1,799

Los AngelesKlagenfurt

LAX - KLU

LAXKLU

Los Angeles

Thu 3/5

11:30 am-10:30 am

2 stops38h 00m

Klagenfurt

Mon 3/9

5:50 am-10:00 pm

2 stops24h 10m

$1,910

Los AngelesKlagenfurt

LAX - KLU

LAXKLU

Los Angeles

Thu 3/5

11:30 am-10:30 am

2 stops38h 00m

Klagenfurt

Mon 3/9

5:50 am-10:00 pm

2 stops24h 10m

$1,911

MiamiKlagenfurt

MIA - KLU

MIAKLU

Miami

Thu 3/12

7:00 am-9:05 am

3 stops45h 05m

$403

San FranciscoKlagenfurt

SFO - KLU

SFOKLU

San Francisco

Tue 3/31

10:42 pm-2:00 pm

2 stops30h 18m

$540

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 Miami, and flying into Klagenfurt, then you can expect flight times to average 20h 10m and 15h 45m, respectively.

Cheap Klagenfurt flight deals and tips

Summary info about Klagenfurt flight prices, duration and airlines

Best One-Way Price	$403
Best Round-Trip Price	$866
Fastest flight time	17h 30m

The best one-way flight price to Klagenfurt from United States in the last 72 hours is $403 (Miami to Klagenfurt).

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The best round-trip flight price to Klagenfurt from United States in the last 72 hours is $866 (Boston Logan Intl to Klagenfurt).

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The fastest flight to Klagenfurt from United States takes 17h 30m (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 February 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.