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 $1,045 round-trip, and from Washington, D.C., starting at $1,607 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 $912 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 $1,045 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 $970, based on KAYAK data over the past 12 months. Round-trip fares from Boston average $1,194, while Washington, D.C. runs a bit higher at $1,454.

What is the cheapest day to fly to Klagenfurt?

Sunday is the cheapest day to fly to Klagenfurt at $894 round-trip on average over the past 12 months on KAYAK. Saturday is the most expensive at $1,225.

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

Evening flights to Klagenfurt are the cheapest at $961 round-trip on average. Night flights are the most expensive at $1,995.

What are the most popular airlines flying to Klagenfurt?

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

$459 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

$1,045

Typical prices: $912-$1,188

Lufthansa, Austrian Airlines

Fri 1/5Sat 1/13

JFK - KLU • 2 stops

Cheapest one-way

$459

Typical prices: $639-$905

Multiple Airlines

Sun 12/9

IAD - KLU • 3 stops

Top airlines

Austrian Airlines

Best reviews • 7.5 score

Airline reviews

Top routes

BOS - KLU

Cheapest • 23% average savings

NYC - KLU

Most popular

Insights

When to travel

March

Cheapest • 6% 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, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,045Multiple Airlines

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,048Multiple Airlines

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,068Lufthansa

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,070Lufthansa

Wed, Nov 18 - Sun, Nov 22

5:20 pm - 11:25 amBOS Boston Logan Intl-KLU Klagenfurt

12h 05m1 stop Rome Fiumicino

3:05 pm - 7:55 pmKLU Klagenfurt-BOS Boston Logan Intl

34h 50m2 stops Rome Fiumicino Lisbon Humberto Delgado

$1,516Multiple Airlines

Wed, Dec 16 - Wed, Dec 23

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,593Multiple Airlines

Tue, Dec 8 - Tue, Dec 29

6:10 pm - 10:55 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 45m1 stop Vienna Intl

11:15 am - 2:10 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

32h 55m1 stop Vienna Intl

$1,607Austrian Airlines

Tue, Dec 15 - Tue, Dec 22

6:10 pm - 10:55 amJFK New York John F Kennedy Intl-KLU Klagenfurt

10h 45m1 stop Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,611Multiple Airlines

Tue, Dec 8 - Tue, Dec 29

10:55 pm - 10:55 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

30h 00m2 stops Munich Franz Josef Strauss Vienna Intl

11:15 am - 8:05 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

38h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,626Lufthansa

Wed, Dec 16 - Wed, Dec 23

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

32h 20m2 stops Vienna Intl Frankfurt am Main

$1,641Lufthansa

All round-trip flight deals to Klagenfurt

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,045Multiple Airlines

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,048Multiple Airlines

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,068Lufthansa

Tue, Jan 5 - Wed, Jan 13

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,070Lufthansa

Wed, Nov 18 - Sun, Nov 22

5:20 pm - 11:25 amBOS Boston Logan Intl-KLU Klagenfurt

12h 05m1 stop Rome Fiumicino

3:05 pm - 7:55 pmKLU Klagenfurt-BOS Boston Logan Intl

34h 50m2 stops Rome Fiumicino Lisbon Humberto Delgado

$1,516Multiple Airlines

Wed, Dec 16 - Wed, Dec 23

3:55 pm - 10:30 amJFK New York John F Kennedy Intl-KLU Klagenfurt

36h 35m2 stops Frankfurt am Main Vienna Intl

11:15 am - 2:15 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

33h 00m1 stop Vienna Intl

$1,593Multiple Airlines

Tue, Dec 8 - Tue, Dec 29

6:10 pm - 10:55 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 45m1 stop Vienna Intl

11:15 am - 2:10 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

32h 55m1 stop Vienna Intl

$1,607Austrian Airlines

Tue, Dec 15 - Tue, Dec 22

6:10 pm - 10:55 amJFK New York John F Kennedy Intl-KLU Klagenfurt

10h 45m1 stop Vienna Intl

11:15 am - 3:40 pmKLU Klagenfurt-JFK New York John F Kennedy Intl

34h 25m2 stops Vienna Intl Munich Franz Josef Strauss

$1,611Multiple Airlines

Tue, Dec 8 - Tue, Dec 29

10:55 pm - 10:55 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

30h 00m2 stops Munich Franz Josef Strauss Vienna Intl

11:15 am - 8:05 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

38h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,626Lufthansa

Wed, Dec 16 - Wed, Dec 23

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

32h 20m2 stops Vienna Intl Frankfurt am Main

$1,641Lufthansa

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 $1,045 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 $970, based on KAYAK data over the past 12 months. Round-trip fares from Boston average $1,194, while Washington, D.C. runs a bit higher at $1,454.
What is the cheapest day to fly to Klagenfurt?: Sunday is the cheapest day to fly to Klagenfurt at $894 round-trip on average over the past 12 months on KAYAK. Saturday is the most expensive at $1,225.
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.: Evening flights to Klagenfurt are the cheapest at $961 round-trip on average. Night flights are the most expensive at $1,995.

Find deals

Low season	July
High season	March
Cheapest flight	$459

Beat the crowds with an average 96% drop in travelers.

The most popular month to fly with an average 146% increase in travelers.

One-way flight from Washington, D.C. Dulles 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 $912 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 $1,045 round-trip, and from Washington, D.C., starting at $1,607 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 $912. If you find a fare below that, you're getting a strong deal.
If your travel dates are flexible, consider flying to Klagenfurt in March. Round-trip fares historically average $913, making March 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 afternoon to save up to $1,034 per round-trip. Afternoon flights to Klagenfurt average $961 compared to $1,995 for evening 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 are the most popular airlines flying to Klagenfurt?

Key details for flights to Klagenfurt

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Cheapest flight

When to book flights to Klagenfurt

Your questions about flights to Klagenfurt, answered

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