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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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LON
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Klagenfurt to London

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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 21 November 2025.

Mon 1/1210:00KLU - STN
Nonstop2h 10mRyanair
Sat 6/1205:55STN - KLU
Nonstop2h 10mRyanair
Deal found 20/11£32
Sat 13/1209:30KLU - STN
Nonstop2h 10mRyanair
Mon 15/1206:10STN - KLU
Nonstop2h 10mRyanair
Deal found 19/11£42
Sat 29/1109:30KLU - STN
Nonstop2h 10mRyanair
Mon 1/1206:10STN - KLU
Nonstop2h 10mRyanair
Deal found 20/11£44
Mon 8/1210:00KLU - STN
Nonstop2h 10mRyanair
Sat 13/1205:55STN - KLU
Nonstop2h 10mRyanair
Deal found 19/11£44
Mon 24/1110:00KLU - STN
Nonstop2h 10mRyanair
Sat 29/1105:55STN - KLU
Nonstop2h 10mRyanair
Deal found 19/11£47
Sat 13/1209:30KLU - STN
Nonstop2h 10mRyanair
Sat 20/1205:55STN - KLU
Nonstop2h 10mRyanair
Deal found 20/11£94
Mon 29/1210:00KLU - STN
Nonstop2h 10mRyanair
Sat 3/105:55STN - KLU
Nonstop2h 10mRyanair
Deal found 20/11£106
Sat 6/1209:30KLU - STN
Nonstop2h 10mRyanair
Mon 8/1206:10STN - KLU
Nonstop2h 10mRyanair
Deal found 19/11£113
Wed 3/1214:50KLU - LHR
1 stop7h 50mAustrian Airlines
Sun 7/1206:00LHR - KLU
1 stop16h 25mAustrian Airlines
Deal found 19/11£204
Fri 12/1214:50KLU - LHR
1 stop7h 50mMultiple Airlines
Sun 14/1208:45LHR - KLU
2 stops13h 40mMultiple Airlines
Deal found 20/11£211
Sat 6/1214:50KLU - LHR
1 stop7h 50mAustrian Airlines
Tue 9/1206:00LHR - KLU
1 stop6h 55mAustrian Airlines
Deal found 20/11£220
Sat 20/1216:00KLU - LHR
1 stop17h 20mAustrian Airlines
Thu 25/1219:25LHR - KLU
1 stop17h 25mAustrian Airlines
Deal found 19/11£221

Cheap 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 21 November 2025.

Round-trip from

£32

One-way from

£15

Popular in

August

Cheapest in

January

Average price

£49
Ryanair
  • Ryanair
  • 1/12-6/12
  • Nonstop
  • 4h 20m total
  • Klagenfurt to London
Search Deals
Ryanair
  • Ryanair
  • 15/12
  • Nonstop
  • 2h 10m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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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 21 November 2025.
Use the filters below to find and compare flights from Klagenfurt to London that are best for you.

Fly from

Klagenfurt

Fly to

London

Route

Depart

Return

Price

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 24/1

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 26/1

06:10-09:20

Nonstop2h 10m

£37

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 17/1

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 19/1

06:10-09:20

Nonstop2h 10m

£37

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 10/1

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 12/1

06:10-09:20

Nonstop2h 10m

£38

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Mon 22/12

10:00-11:10

Nonstop2h 10m

London Stansted

Sat 27/12

05:55-09:05

Nonstop2h 10m

£44

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 21/3

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 23/3

06:10-09:20

Nonstop2h 10m

£54

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 13/12

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 15/12

06:10-09:20

Nonstop2h 10m

£74

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Mon 29/12

10:00-11:10

Nonstop2h 10m

London Stansted

Sat 3/1

05:55-09:05

Nonstop2h 10m

£114

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 6/12

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 8/12

06:10-09:20

Nonstop2h 10m

£129

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Mon 16/2

10:00-11:10

Nonstop2h 10m

London Stansted

Fri 20/2

19:40-10:30

1 stop13h 50m

£138

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Sat 14/3

09:30-10:40

Nonstop2h 10m

London Stansted

Mon 16/3

12:45-23:25

1 stop9h 40m

£142

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 51 results
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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 14 November 2025.

The best time to book flights from Klagenfurt to London is 23 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, January is the cheapest month in which you can book a flight from Klagenfurt to London (average of £27). Flying from Klagenfurt to London in August is currently the most expensive (average of £69). 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 21 November 2025.

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 32% of weekly flights between Klagenfurt and London have experienced delays in the past year, with the average delay time being 105 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, Albastar have had the lowest number of delays on this route, with no flights being classified as 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 10m. Fly via Ryanair to get the fastest option. Airlines will cover a distance of 729 mi. Most flights are nonstop.

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

    When deciding which route to take from Klagenfurt to London consider Klagenfurt - London Heathrow, 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, January is the cheapest month in which you can book a flight from Klagenfurt to London (average of £27). Flying from Klagenfurt to London in August is currently the most expensive (average of £69). 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 Klagenfurt to London

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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

Deals for Klagenfurt to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

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

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Not ready to book yet? You can track prices for flights from Klagenfurt to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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