What is the difference between the most popular and the most frequent airline at Klagenfurt?

Austrian Airlines operates the most flights from the United States to Klagenfurt at 0 per week, and for this route Austrian Airlines is also the airline most often selected by KAYAK users searching for flights from the United States to Klagenfurt. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

Which city has the cheapest flights to Klagenfurt?

Based on fares booked in the past 5 days, the cheapest flights to Klagenfurt are from New York, starting at $879 round-trip.

How do I know if a flight to Klagenfurt is a good deal?

A good deal on a flight to Klagenfurt is around $848 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

What is the cheapest flight to Klagenfurt?

New York John F Kennedy Intl Airport to Klagenfurt is the cheapest route at $879 round-trip, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Klagenfurt?

On average, a round-trip flight from the United States to Klagenfurt costs $945, based on KAYAK data over the past 12 months. Round-trip fares from Atlanta average $735, while Boston runs a bit higher at $1,521.

What is the cheapest day to fly to Klagenfurt?

Monday is the cheapest day to fly to Klagenfurt at $801 round-trip on average over the past 12 months on KAYAK. Thursday is the most expensive at $1,176.

What is the cheapest time of day to fly to Klagenfurt?

Morning flights to Klagenfurt are the cheapest at $910 round-trip on average. Afternoon flights are the most expensive at $1,042.

What is a good deal for flights to Klagenfurt?

Flights under $848 are considered a good deal. 25% of KAYAK users found round-trip flights to Klagenfurt at or below these prices, with the lowest fares from: •Atlanta $735.

What are the most popular airlines flying to Klagenfurt?

Austrian Airlines is the most popular airline flying to Klagenfurt on KAYAK, followed by Lufthansa.

$344 CHEAP FLIGHTS to Klagenfurt in 2026/27

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Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$879

Typical prices: $848-$1,119

Multiple Airlines

Sat 10/13Thu 10/18

JFK - KLU • 1 stop

Cheapest one-way

$344

Typical prices: $622-$855

Multiple Airlines

Mon 10/22

JFK - KLU • 2 stops

Top airlines

Austrian Airlines

Best reviews • 7.5 score

Airline reviews

Top routes

ATL - KLU

Cheapest • 44% average savings

WAS - KLU

Most popular

Insights

When to travel

November

Cheapest • 15% price drop

March

Most popular

Good to know

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We hope you love your trip to Klagenfurt!

Flight Deals

Cheap Flights to Klagenfurt

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

All Flight Deals

Recent round-trip flight deals to Klagenfurt

Tue, Oct 13 - Sun, Oct 18

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

28h 55m1 stop Rome Fiumicino

4:15 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

36h 15m2 stops Palma de Mallorca Son Sant Joan Rome Fiumicino

$879Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

10:25 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

19h 05m2 stops Chicago O'Hare Intl Vienna Intl

11:40 am - 1:30 pmKLU Klagenfurt-BOS Boston Logan Intl

31h 50m1 stop Vienna Intl

$1,093Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

10:25 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

19h 05m2 stops Chicago O'Hare Intl Vienna Intl

11:40 am - 1:30 pmKLU Klagenfurt-BOS Boston Logan Intl

31h 50m1 stop Vienna Intl

$1,094Multiple Airlines

Thu, Oct 29 - 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 - 6:35 pmKLU Klagenfurt-BOS Boston Logan Intl

36h 55m2 stops Vienna Intl Munich Franz Josef Strauss

$1,123Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

5:05 pm - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

12h 25m2 stops Frankfurt am Main Vienna Intl

11:40 am - 5:27 pmKLU Klagenfurt-BOS Boston Logan Intl

35h 47m2 stops Vienna Intl Newark

$1,126Multiple Airlines

Thu, Oct 29 - Sun, Nov 1

11:55 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

17h 35m2 stops Chicago O'Hare Intl Vienna Intl

11:15 am - 1:45 pmKLU Klagenfurt-BOS Boston Logan Intl

56h 30m2 stops Vienna Intl Frankfurt am Main

$1,163Multiple Airlines

Sun, Nov 15 - Sun, Nov 22

5:30 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

35h 00m2 stops Munich Franz Josef Strauss Vienna Intl

11:15 am - 1:35 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

56h 20m2 stops Vienna Intl Frankfurt am Main

$1,181Lufthansa

Tue, Oct 13 - Sun, Oct 18

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

28h 55m1 stop Rome Fiumicino

3:05 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

13h 25m1 stop Rome Fiumicino

$1,183Multiple Airlines

Sun, Nov 15 - Sun, Nov 22

2:52 pm - 12:20 pmCHS Charleston-KLU Klagenfurt

15h 28m3 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss Cologne Köln/Bonn

11:15 am - 11:59 pmKLU Klagenfurt-CHS Charleston

18h 44m3 stops Vienna Intl Munich Franz Josef Strauss Newark

$1,391Multiple Airlines

Sat, Nov 14 - Sun, Nov 22

12:20 am - 12:20 pmJFK New York John F Kennedy Intl-KLU Klagenfurt

30h 00m3 stops Istanbul Berlin Brandenburg Cologne Köln/Bonn

11:15 am - 4:29 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

35h 14m3 stops Vienna Intl Berlin Brandenburg Dublin

$1,404Multiple Airlines

All round-trip flight deals to Klagenfurt

Tue, Oct 13 - Sun, Oct 18

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

28h 55m1 stop Rome Fiumicino

4:15 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

36h 15m2 stops Palma de Mallorca Son Sant Joan Rome Fiumicino

$879Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

10:25 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

19h 05m2 stops Chicago O'Hare Intl Vienna Intl

11:40 am - 1:30 pmKLU Klagenfurt-BOS Boston Logan Intl

31h 50m1 stop Vienna Intl

$1,093Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

10:25 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

19h 05m2 stops Chicago O'Hare Intl Vienna Intl

11:40 am - 1:30 pmKLU Klagenfurt-BOS Boston Logan Intl

31h 50m1 stop Vienna Intl

$1,094Multiple Airlines

Thu, Oct 29 - 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 - 6:35 pmKLU Klagenfurt-BOS Boston Logan Intl

36h 55m2 stops Vienna Intl Munich Franz Josef Strauss

$1,123Multiple Airlines

Thu, Oct 29 - Mon, Nov 2

5:05 pm - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

12h 25m2 stops Frankfurt am Main Vienna Intl

11:40 am - 5:27 pmKLU Klagenfurt-BOS Boston Logan Intl

35h 47m2 stops Vienna Intl Newark

$1,126Multiple Airlines

Thu, Oct 29 - Sun, Nov 1

11:55 am - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

17h 35m2 stops Chicago O'Hare Intl Vienna Intl

11:15 am - 1:45 pmKLU Klagenfurt-BOS Boston Logan Intl

56h 30m2 stops Vienna Intl Frankfurt am Main

$1,163Multiple Airlines

Sun, Nov 15 - Sun, Nov 22

5:30 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

35h 00m2 stops Munich Franz Josef Strauss Vienna Intl

11:15 am - 1:35 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

56h 20m2 stops Vienna Intl Frankfurt am Main

$1,181Lufthansa

Tue, Oct 13 - Sun, Oct 18

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

28h 55m1 stop Rome Fiumicino

3:05 pm - 10:30 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

13h 25m1 stop Rome Fiumicino

$1,183Multiple Airlines

Sun, Nov 15 - Sun, Nov 22

2:52 pm - 12:20 pmCHS Charleston-KLU Klagenfurt

15h 28m3 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss Cologne Köln/Bonn

11:15 am - 11:59 pmKLU Klagenfurt-CHS Charleston

18h 44m3 stops Vienna Intl Munich Franz Josef Strauss Newark

$1,391Multiple Airlines

Sat, Nov 14 - Sun, Nov 22

12:20 am - 12:20 pmJFK New York John F Kennedy Intl-KLU Klagenfurt

30h 00m3 stops Istanbul Berlin Brandenburg Cologne Köln/Bonn

11:15 am - 4:29 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

35h 14m3 stops Vienna Intl Berlin Brandenburg Dublin

$1,404Multiple Airlines

Booking Insights

Price, demand and travel trends for flights to Klagenfurt

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

What is the cheapest flight to Klagenfurt?: New York John F Kennedy Intl Airport to Klagenfurt is the cheapest route at $879 round-trip, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.
How much is a flight to Klagenfurt? Average and cheapest price for all round-trip flights to Klagenfurt from each origin found by users searching on KAYAK in the last 12 months.: On average, a round-trip flight from the United States to Klagenfurt costs $945, based on KAYAK data over the past 12 months. Round-trip fares from Atlanta average $735, while Boston runs a bit higher at $1,521.
What is the cheapest day to fly to Klagenfurt?: Monday is the cheapest day to fly to Klagenfurt at $801 round-trip on average over the past 12 months on KAYAK. Thursday is the most expensive at $1,176.
What is the cheapest time of day to fly to Klagenfurt? Average price for all round-trip flights depending on time of departure, seen by users on KAYAK in the last 12 months.: Morning flights to Klagenfurt are the cheapest at $910 round-trip on average. Afternoon flights are the most expensive at $1,042.
What is a good deal for flights to Klagenfurt?: Flights under $848 are considered a good deal. 25% of KAYAK users found round-trip flights to Klagenfurt at or below these prices, with the lowest fares from:
•Atlanta $735.

Find deals

Low season	August
High season	March
Cheapest flight	$344

The most popular month to fly with an average 259% increase in travelers.

One-way flight from New York John F Kennedy Intl Airport to Klagenfurt

When to book flights to Klagenfurt

Are your dates flexible? Find out the best times to travel to Klagenfurt based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to Klagenfurt based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How do I know if a flight to Klagenfurt is a good deal?
A good deal on a flight to Klagenfurt is around $848 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.
Which city has the cheapest flights to Klagenfurt?
Based on fares booked in the past 5 days, the cheapest flights to Klagenfurt are from New York, starting at $879 round-trip.
What is the difference between the most popular and the most frequent airline at Klagenfurt?
Austrian Airlines operates the most flights from the United States to Klagenfurt at 0 per week, and for this route Austrian Airlines is also the airline most often selected by KAYAK users searching for flights from the United States to Klagenfurt. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

For flights to Klagenfurt, a good round-trip fare is around $848. If you find a fare below that, you're getting a strong deal.
If your travel dates are flexible, consider flying to Klagenfurt in November. Round-trip fares historically average $801, making November the cheapest month to travel based on KAYAK data from the last 12 months.
Before you book:

• Check the route's typical price range so you can spot a deal.
• Confirm baggage fees and seat-selection costs on budget carriers.
• Verify whether you need any travel documents beyond ID.
• Pick a departure airport, since your nearest may not be the cheapest origin.
Shift your departure to morning to save up to $132 per round-trip. Morning flights to Klagenfurt average $910 compared to $1,042 for noon flights.

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Everything you should know

Cheap Flights to Klagenfurt

Recent round-trip flight deals to Klagenfurt

Recent one-way flight deals to Klagenfurt

All round-trip flight deals to Klagenfurt

Price, demand and travel trends for flights to Klagenfurt

What is the cheapest flight to Klagenfurt?

How much is a flight to Klagenfurt?

What is the cheapest day to fly to Klagenfurt?

What is the cheapest time of day to fly to Klagenfurt?

What is a good deal for flights to Klagenfurt?

What are the most popular airlines flying to Klagenfurt?

Key details for flights to Klagenfurt

Low season

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Cheapest flight

When to book flights to Klagenfurt

Your questions about flights to Klagenfurt, answered

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