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 Washington, D.C., starting at $1,835 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?

Atlanta to Klagenfurt is the cheapest route at $1,009 round-trip, found in the past 5 days on KAYAK. Washington, D.C. Dulles Intl Airport to Klagenfurt is the most popular connection with round-trip deals from $1,835.

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.

$1,009 CHEAP FLIGHTS to Klagenfurt in 2026/27

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

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

Cheapest round-trip

$1,009

Typical prices: $848-$1,119

Air Canada, Lufthansa

Mon 11/26Fri 11/30

ATL - KLU • 2 stops

Cheapest one-way

$1,344

Typical prices: $622-$855

Austrian Airlines

Wed 10/31

JFK - KLU • 1 stop

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

Thu, Nov 26 - Mon, Nov 30

12:55 pm - 10:30 amATL Atlanta Hartsfield-Jackson-KLU Klagenfurt

15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:40 am - 2:40 pmKLU Klagenfurt-ATL Atlanta Hartsfield-Jackson

33h 00m2 stops Vienna Intl Frankfurt am Main

$1,009Multiple Airlines

Thu, Nov 26 - Mon, Nov 30

11:11 am - 10:30 amATL Atlanta Hartsfield-Jackson-KLU Klagenfurt

17h 19m3 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:40 am - 2:40 pmKLU Klagenfurt-ATL Atlanta Hartsfield-Jackson

33h 00m2 stops Vienna Intl Frankfurt am Main

$1,042Multiple Airlines

Thu, Oct 29 - Sun, Nov 1

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

12h 25m2 stops Frankfurt am Main Vienna Intl

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

56h 30m2 stops Vienna Intl Frankfurt am Main

$1,187Lufthansa

Thu, Oct 29 - Sun, Nov 1

12:00 pm - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

17h 30m3 stops Newark Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:15 am - 5:44 pmKLU Klagenfurt-BOS Boston Logan Intl

36h 29m2 stops Vienna Intl Newark

$1,682Austrian Airlines

Tue, Dec 22 - Mon, Jan 4

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

11:15 am - 9:05 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

39h 50m2 stops Vienna Intl Toronto Pearson Intl

$1,835Multiple Airlines

Tue, Dec 22 - Mon, Jan 4

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,852Multiple Airlines

Tue, Dec 22 - Tue, Jan 5

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,871Austrian Airlines

Mon, Dec 21 - Tue, Jan 5

10:09 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

30h 21m2 stops Toronto Pearson Intl Vienna Intl

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

14h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,885Multiple Airlines

Tue, Dec 22 - Mon, Jan 4

6:10 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 20m1 stop Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,894Multiple Airlines

Mon, Dec 21 - Tue, Jan 5

6:10 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 20m1 stop Vienna Intl

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

14h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,919Multiple Airlines

All round-trip flight deals to Klagenfurt

Thu, Nov 26 - Mon, Nov 30

12:55 pm - 10:30 amATL Atlanta Hartsfield-Jackson-KLU Klagenfurt

15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:40 am - 2:40 pmKLU Klagenfurt-ATL Atlanta Hartsfield-Jackson

33h 00m2 stops Vienna Intl Frankfurt am Main

$1,009Multiple Airlines

Thu, Nov 26 - Mon, Nov 30

11:11 am - 10:30 amATL Atlanta Hartsfield-Jackson-KLU Klagenfurt

17h 19m3 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:40 am - 2:40 pmKLU Klagenfurt-ATL Atlanta Hartsfield-Jackson

33h 00m2 stops Vienna Intl Frankfurt am Main

$1,042Multiple Airlines

Thu, Oct 29 - Sun, Nov 1

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

12h 25m2 stops Frankfurt am Main Vienna Intl

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

56h 30m2 stops Vienna Intl Frankfurt am Main

$1,187Lufthansa

Thu, Oct 29 - Sun, Nov 1

12:00 pm - 10:30 amBOS Boston Logan Intl-KLU Klagenfurt

17h 30m3 stops Newark Montreal Pierre Elliott Trudeau Intl Vienna Intl

11:15 am - 5:44 pmKLU Klagenfurt-BOS Boston Logan Intl

36h 29m2 stops Vienna Intl Newark

$1,682Austrian Airlines

Tue, Dec 22 - Mon, Jan 4

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

11:15 am - 9:05 pmKLU Klagenfurt-IAD Washington, D.C. Dulles Intl

39h 50m2 stops Vienna Intl Toronto Pearson Intl

$1,835Multiple Airlines

Tue, Dec 22 - Mon, Jan 4

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,852Multiple Airlines

Tue, Dec 22 - Tue, Jan 5

9:55 am - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

18h 35m2 stops Toronto Pearson Intl Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,871Austrian Airlines

Mon, Dec 21 - Tue, Jan 5

10:09 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

30h 21m2 stops Toronto Pearson Intl Vienna Intl

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

14h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,885Multiple Airlines

Tue, Dec 22 - Mon, Jan 4

6:10 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 20m1 stop Vienna Intl

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

32h 55m1 stop Vienna Intl

$1,894Multiple Airlines

Mon, Dec 21 - Tue, Jan 5

6:10 pm - 10:30 amIAD Washington, D.C. Dulles Intl-KLU Klagenfurt

10h 20m1 stop Vienna Intl

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

14h 50m2 stops Vienna Intl Munich Franz Josef Strauss

$1,919Multiple 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?: Atlanta to Klagenfurt is the cheapest route at $1,009 round-trip, found in the past 5 days on KAYAK. Washington, D.C. Dulles Intl Airport to Klagenfurt is the most popular connection with round-trip deals from $1,835.
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	$1,009

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

Round-trip flight from Atlanta 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 Washington, D.C., starting at $1,835 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

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High season

Cheapest flight

When to book flights to Klagenfurt

Your questions about flights to Klagenfurt, answered

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