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Cheap flights from London to Klagenfurt from £18

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KLU
17 Mar — 24 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Klagenfurt

Enter your travel dates to find the best prices.

Cheapest flights from London to Klagenfurt
Explore the most affordable flight options available from London to Klagenfurt. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 February 2026.

Sat 28/205:55
STN
-
KLU
Nonstop2h 10m
Ryanair
Mon 2/310:00
KLU
-
STN
Nonstop2h 10m
Ryanair
Deal found 13/2£35
Sat 14/305:55
STN
-
KLU
Nonstop2h 10m
Ryanair
Mon 16/310:00
KLU
-
STN
Nonstop2h 10m
Ryanair
Deal found 13/2£37
Sat 21/205:55
STN
-
KLU
Nonstop2h 10m
Ryanair
Mon 23/210:00
KLU
-
STN
Nonstop2h 10m
Ryanair
Deal found 14/2£53
Sat 17/1008:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Mon 19/1010:30
KLU
-
STN
Nonstop2h 05m
Ryanair
Deal found 14/2£82
Tue 31/317:45
STN
-
KLU
1 stop22h 35m
Ryanair
Wed 8/416:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Deal found 13/2£97
Sat 14/205:55
STN
-
KLU
Nonstop2h 10m
Ryanair
Mon 16/210:00
KLU
-
STN
Nonstop2h 10m
Ryanair
Deal found 12/2£97
Wed 1/408:00
STN
-
KLU
1 stop8h 20m
Ryanair
Wed 8/416:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Deal found 13/2£119
Wed 26/812:25
STN
-
KLU
Nonstop2h 05m
Ryanair
Mon 31/810:30
KLU
-
STN
Nonstop2h 05m
Ryanair
Deal found 13/2£142
Wed 1/406:10
LGW
-
KLU
1 stop10h 10m
Multiple Airlines
Wed 8/417:55
KLU
-
LGW
2 stops17h 20m
Multiple Airlines
Deal found 15/2£166
Sat 14/306:00
LHR
-
KLU
1 stop3h 30m
Austrian Airlines
Sat 21/315:15
KLU
-
LHR
1 stop18h 05m
Austrian Airlines
Deal found 14/2£169
Sat 17/1006:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Mon 19/1015:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Deal found 14/2£170
Sat 14/306:00
LHR
-
KLU
1 stop3h 30m
Austrian Airlines
Mon 16/315:15
KLU
-
LHR
1 stop18h 05m
Austrian Airlines
Deal found 13/2£176

Find flight deals from London to Klagenfurt

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Klagenfurt (KLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 February 2026.

Round-trip from

£35

One-way from

£18

Popular in

November

Cheapest in

January

Average price

£197

Good round-trip deal

£52 or less
Ryanair
  • Ryanair
  • 28/2-2/3
  • Nonstop
  • 4h 20m total
  • London to Klagenfurt
Search Deals
Ryanair
  • Ryanair
  • 14/3
  • Nonstop
  • 2h 10m total
  • London to Klagenfurt
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Klagenfurt.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Klagenfurt that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 February 2026.
Use the filters below to find and compare flights from London to Klagenfurt that are best for you.

Fly from

London

Fly to

Klagenfurt

Route

Depart

Return

Price

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Sat 14/3

05:55-09:05

Nonstop2h 10m

Klagenfurt

Sat 21/3

09:30-10:40

Nonstop2h 10m

£35

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Sat 28/2

05:55-09:05

Nonstop2h 10m

Klagenfurt

Mon 2/3

10:00-11:10

Nonstop2h 10m

£36

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Tue 31/3

17:45-17:20

1 stop22h 35m

Klagenfurt

Wed 8/4

16:05-17:10

Nonstop2h 05m

£97

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Wed 1/4

08:00-17:20

1 stop8h 20m

Klagenfurt

Wed 8/4

16:05-17:10

Nonstop2h 05m

£119

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Wed 1/4

08:00-17:20

1 stop8h 20m

Klagenfurt

Wed 8/4

17:55-17:10

2 stops24h 15m

£146

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Wed 17/6

12:25-15:30

Nonstop2h 05m

Klagenfurt

Mon 22/6

10:30-11:35

Nonstop2h 05m

£150

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Wed 1/4

08:00-17:20

1 stop8h 20m

Klagenfurt

Tue 7/4

15:15-07:35

1 stop17h 20m

£163

LondonKlagenfurt

LGW - KLU

LGWKLU

London Gatwick

Wed 1/4

06:10-17:20

1 stop10h 10m

Klagenfurt

Wed 8/4

17:55-10:15

2 stops17h 20m

£166

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 14/3

06:00-10:30

1 stop3h 30m

Klagenfurt

Sat 21/3

15:15-08:20

1 stop18h 05m

£169

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Mon 4/5

06:00-14:00

1 stop7h 00m

Klagenfurt

Mon 11/5

15:00-21:40

1 stop7h 40m

£181

Flights are sorted by cheapest return flights first.

Deals found on 12/2

Showing 1-10 of 60 results
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Best time to book a flight from London to Klagenfurt

Have a flexible travel schedule? Discover the best time to fly to Klagenfurt from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Klagenfurt

How far ahead should I book a flight from London to Klagenfurt?

Use this chart to determine the optimal time to book a return flight from London to Klagenfurt. Price data was last updated on 13 February 2026.

To ensure you get the cheapest price possible for a flight from London to Klagenfurt, you should look to book at least 19 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London to Klagenfurt?

Currently, September is the cheapest month in which you can book a flight from London to Klagenfurt (average of £142). Flying from London to Klagenfurt in July is currently the most expensive (average of £266). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to KLU?

Find hourly flight availability from London to Klagenfurt. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Klagenfurt as you normally would.

What’s the top stopover airport for flights from London to Klagenfurt?

Share of one-stop return flights from London to Klagenfurt chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Vienna (VIE) – chosen by Cheapflights users on 97% of one-stop itineraries from London to Klagenfurt on Cheapflights.

What’s the cheapest stopover airport for flights from London to Klagenfurt?

Average return fare for one-stop flights from London to Klagenfurt, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Vienna (VIE) is the most affordable one-stop option, with an average return flight price of £177.

What’s the fastest stopover option from London to Klagenfurt?

Shortest average travel time for one-stop one-way flights from London to Klagenfurt, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Vienna (VIE) have the shortest average one-way travel time for one-stop routes: 3h 46m.

Which airport typically offers the quickest stopover for flights from London to Klagenfurt?

Average stopover duration for one-stop one-way flights from London to Klagenfurt, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Vienna (VIE) offer the fastest connection on this route, with an average stopover time of 0h 50m.

Reviews of airlines servicing Klagenfurt

Get insights into the airlines that provide service to Klagenfurt. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Klagenfurt. Reviews last updated 15 February 2026.
Read through reviews of airlines operating flights from London to Klagenfurt, such as Austrian Airlines and Ryanair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.5
Good
896 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.8

Overall

7.5

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Austrian Airlines
7.5
Good
896 reviews
Austrian Airlines
7.5
Good
896 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.8

Overall

7.5

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Ryanair
6.9
Okay
5,272 reviews
Austrian Airlines
7.5
Good
896 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.8

Overall

7.5

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

VIE - DXB

Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful

Related info for your journey

Find useful and relevant information for your journey from London to Klagenfurt. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Klagenfurt from London?

    Klagenfurt (KLU), located 2.0 mi from the city center, is the airport you fly into when you book flights from London to Klagenfurt. 2 airlines have flights to Klagenfurt from London on a regular basis. Booking flights from London to Klagenfurt should not be difficult; the airport handles an average of 0 inbound flights from London per day.

  • How long is the flight from London to Klagenfurt?

    Airlines like Ryanair and Austrian Airlines fly from London to Klagenfurt in about 2h 10m. The time it takes to get you to your destination can typically vary by up to 1h 20m. There are 729 mi between London and Klagenfurt. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Klagenfurt round-trip?

    Flying on Ryanair is currently your cheapest option to Klagenfurt, with prices starting at £41. Another option worth looking into is Austrian Airlines, starting at £153 return. You may be able to fly from London to Klagenfurt for 72% less than the average price by searching for these airlines.

  • What are the most popular routes from London to Klagenfurt?

    While some choose either London Gatwick - Klagenfurt or London Heathrow - Klagenfurt, London City - Klagenfurt is the most popular route from London to Klagenfurt.

  • Can I find deals for flights from London to Klagenfurt that include hotel bookings?

    Yes. In addition to deals on London to Klagenfurt flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Klagenfurt?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Klagenfurt.

  • Can I find deals for business class flights from London to Klagenfurt?

    Yes. Cheapflights offers flight deals from London to Klagenfurt by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Klagenfurt?

    Currently, September is the cheapest month in which you can book a flight from London to Klagenfurt (average of £142). Flying from London to Klagenfurt in July is currently the most expensive (average of £266). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for London to Klagenfurt

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from London to Klagenfurt

Discover the top 2 airlines that operate flights from London to Klagenfurt. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 February 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£41Average£135FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Austrian AirlinesCheapest£153Average£250FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Klagenfurt?

Cheapflights helps you search for flights from London to Klagenfurt via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Klagenfurt?

Cheapflights helps you find that perfect flight to Klagenfurt from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Klagenfurt with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Klagenfurt flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Klagenfurt become cheaper?

Yes, Cheapflights offers price alerts on London to Klagenfurt flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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