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Cheap flights from Klagenfurt to London from £15

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LON
5 May — 12 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Klagenfurt to London

Enter your travel dates to find the best prices.

Cheapest flights from Klagenfurt to London
Explore the most affordable flight options available from Klagenfurt to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 April 2026.

Wed 15/416:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Sat 25/408:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 1/4£37
Wed 6/516:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Wed 13/512:25
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 31/3£38
Sat 9/511:55
KLU
-
STN
Nonstop2h 05m
Ryanair
Wed 13/512:25
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 31/3£44
Wed 27/516:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Mon 1/606:45
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 31/3£59
Mon 20/415:45
KLU
-
STN
1 stop16h 35m
Ryanair
Sat 25/408:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 1/4£63
Wed 15/417:55
KLU
-
STN
1 stop14h 25m
Ryanair
Sat 18/408:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 4/4£64
Wed 27/516:05
KLU
-
STN
Nonstop2h 05m
Ryanair
Sat 30/508:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 31/3£64
Sat 27/611:55
KLU
-
STN
Nonstop2h 05m
Ryanair
Mon 29/606:45
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 3/4£65
Tue 14/415:15
KLU
-
STN
1 stop17h 20m
Ryanair
Sat 25/408:10
STN
-
KLU
Nonstop2h 05m
Ryanair
Deal found 1/4£67
Wed 15/417:55
KLU
-
LGW
1 stop15h 35m
Multiple Airlines
Sat 18/406:25
LGW
-
KLU
1 stop6h 35m
Multiple Airlines
Deal found 4/4£112
Wed 15/417:55
KLU
-
LTN
1 stop7h 55m
Multiple Airlines
Sat 18/406:00
LTN
-
KLU
1 stop7h 00m
Multiple Airlines
Deal found 4/4£125
Fri 17/422:10
KLU
-
LGW
1 stop11h 10m
Multiple Airlines
Mon 20/407:35
LGW
-
KLU
1 stop6h 35m
Multiple Airlines
Deal found 4/4£128

Find flight deals from Klagenfurt to London

Discover tips and strategies to find the most affordable flight options for your journey from Klagenfurt (KLU) to London (LON). 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 5 April 2026.

Round-trip from

£37

One-way from

£15

Popular in

March

Cheapest in

January

Average price

£84
Ryanair
  • Ryanair
  • 15/4-25/4
  • Nonstop
  • 4h 10m total
  • Klagenfurt to London
Search Deals
Ryanair
  • Ryanair
  • 29/4
  • Nonstop
  • 2h 05m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£7 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Klagenfurt to London 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 5 April 2026.
Use the filters below to find and compare flights from Klagenfurt to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 9/5

11:55-13:00

Nonstop2h 05m

London Stansted

Tue 12/5

07:45-14:40

1 stop5h 55m

£81

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Wed 15/4

17:55-08:30

1 stop15h 35m

London Gatwick

Sat 18/4

06:25-14:00

1 stop6h 35m

£112

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Mon 1/6

09:35-20:35

1 stop12h 00m

London Stansted

Sat 6/6

08:10-11:15

Nonstop2h 05m

£136

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Fri 8/5

22:10-08:20

1 stop11h 10m

London Gatwick

Tue 12/5

07:00-14:40

1 stop6h 40m

£138

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Tue 19/5

15:15-23:35

1 stop9h 20m

London Stansted

Tue 26/5

19:25-15:50

2 stops19h 25m

£145

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 12/9

11:55-13:00

Nonstop2h 05m

London Stansted

Wed 16/9

08:35-14:55

1 stop5h 20m

£148

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Fri 8/5

22:10-15:10

2 stops18h 00m

London Gatwick

Mon 11/5

21:35-14:40

1 stop16h 05m

£150

KlagenfurtLondon

KLU - SEN

KLUSEN

Klagenfurt

Wed 15/4

17:55-23:05

1 stop6h 10m

London Southend

Fri 24/4

13:30-21:45

1 stop7h 15m

£150

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 27/6

11:55-13:00

Nonstop2h 05m

London Stansted

Mon 29/6

09:05-18:00

2 stops7h 55m

£161
Fastest return journey

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Mon 3/8

10:30-11:35

Nonstop2h 05m

London Stansted

Sat 8/8

08:10-11:15

Nonstop2h 05m

£167

Flights are sorted by cheapest return flights first.

Deals found on 3/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Klagenfurt to London

Have a flexible travel schedule? Discover the best time to fly to London from Klagenfurt 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 Klagenfurt to London

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

Use this chart to determine the optimal time to book a return flight from Klagenfurt to London. Price data was last updated on 3 April 2026.

The best time to book flights from Klagenfurt to London is 33 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Klagenfurt to London (average of £29). Flying from Klagenfurt to London in August is currently the most expensive (average of £67). 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 KLU to LON?

Find hourly flight availability from Klagenfurt to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 April 2026.

When flying from Klagenfurt to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Klagenfurt to London?

How often are flights from Klagenfurt to London delayed?

About 29% of weekly flights between Klagenfurt and London have experienced delays in the past year, with the average delay time being 106 minutes.

What is the most punctual flight time for Klagenfurt to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Klagenfurt to London flights?

Over the past year, Ryanair have had the lowest number of delays on this route, with just 29% of flights being delayed.

Related info for your journey

Find useful and relevant information for your journey from Klagenfurt to London. 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 from for flights from Klagenfurt to London?

    If you book a flight to London from Klagenfurt, you will be flying from Klagenfurt, which is the city’s only airport. Klagenfurt (KLU) is located 2.0 mi from the center of Klagenfurt. There are 0 flights from Klagenfurt to London per day from 0 different airlines.

  • How long is the flight from Klagenfurt to London?

    There are many flights that can get you from Klagenfurt to London in 2h 05m. Fly via Ryanair or Austrian Airlines to get the fastest option. Airlines will cover a distance of 729 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    When deciding which route to take from Klagenfurt to London consider Klagenfurt - London Gatwick, Klagenfurt - London Luton or Klagenfurt - London Stansted as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Klagenfurt to London 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 Klagenfurt to London?

    Currently, November is the cheapest month in which you can book a flight from Klagenfurt to London (average of £29). Flying from Klagenfurt to London in August is currently the most expensive (average of £67). 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

Travelling to a place near London?

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Croydon
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Gatwick
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Kingston upon Thames
Romford
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