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Cheap flights from Klagenfurt to London from £29

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 29/5. 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

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 30 April 2025.

Round-trip from

£51

One-way from

£29

Popular in

August

Cheapest in

January

Average price

£142
Ryanair
  • Ryanair
  • 15/5-18/5
  • Nonstop
  • 4h 10m total
  • Klagenfurt to London
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Ryanair
  • Ryanair
  • 29/5
  • Nonstop
  • 2h 05m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£15 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Klagenfurt to London

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 30 April 2025.

Thu 15/522:25KLU - STN
Nonstop2h 05mRyanair
Sun 18/516:50STN - KLU
Nonstop2h 05mRyanair
Deal found 29/4£51
Thu 8/514:55KLU - STN
2 stops17h 20mMultiple Airlines
Sun 11/516:50STN - KLU
Nonstop2h 05mMultiple Airlines
Deal found 30/4£96
Thu 8/514:55KLU - LTN
1 stop8h 55mMultiple Airlines
Sun 11/508:15LTN - KLU
1 stop9h 25mMultiple Airlines
Deal found 30/4£118
Fri 9/522:35KLU - LTN
2 stops23h 25mRyanair
Mon 12/515:30LTN - KLU
1 stop15h 45mRyanair
Deal found 30/4£127
Fri 9/522:35KLU - LGW
2 stops22h 50mMultiple Airlines
Mon 12/521:35LGW - KLU
1 stop9h 40mMultiple Airlines
Deal found 30/4£127
Tue 6/508:45KLU - LHR
2 stops34h 15mMultiple Airlines
Thu 29/518:50LHR - KLU
2 stops26h 20mMultiple Airlines
Deal found 29/4£139
Thu 8/514:55KLU - SEN
1 stop23h 10mMultiple Airlines
Thu 15/517:20SEN - KLU
1 stop27h 50mMultiple Airlines
Deal found 30/4£169
Thu 26/615:00KLU - LHR
1 stop7h 40mAustrian Airlines
Sun 29/606:00LHR - KLU
1 stop16h 25mAustrian Airlines
Deal found 29/4£175
Tue 30/915:00KLU - LHR
2 stops6h 40mLufthansa
Tue 7/1006:55LHR - KLU
2 stops6h 05mLufthansa
Deal found 29/4£222
Mon 12/514:30KLU - LHR
1 stop18h 40mEurowings
Thu 15/520:00LHR - KLU
1 stop19h 15mEurowings
Deal found 30/4£276
Fri 9/505:45KLU - LCY
2 stops11h 40mLufthansa
Mon 12/508:45LCY - KLU
2 stops13h 40mLufthansa
Deal found 30/4£336
Tue 8/705:45KLU - LCY
2 stops11h 40mMultiple Airlines
Mon 14/708:45LCY - KLU
2 stops13h 40mMultiple Airlines
Deal found 29/4£352

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 30 April 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

Thu 15/5

22:25-23:30

Nonstop2h 05m

London Stansted

Sun 18/5

16:50-19:55

Nonstop2h 05m

£51

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Thu 15/5

14:55-07:15

2 stops17h 20m

London Stansted

Sun 18/5

16:50-19:55

Nonstop2h 05m

£99

KlagenfurtLondon

KLU - LTN

KLULTN

Klagenfurt

Thu 15/5

14:55-22:50

1 stop8h 55m

London Luton

Sun 18/5

08:15-18:40

1 stop9h 25m

£136

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Thu 15/5

14:55-08:35

1 stop18h 40m

London Gatwick

Thu 22/5

15:25-22:10

2 stops29h 45m

£147

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 26/6

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 29/6

06:00-23:25

1 stop16h 25m

£175

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 1/10

15:00-21:40

1 stop7h 40m

London Heathrow

Tue 7/10

07:25-14:00

2 stops5h 35m

£196

KlagenfurtLondon

KLU - SEN

KLUSEN

Klagenfurt

Sat 17/5

10:50-23:00

1 stop13h 10m

London Southend

Tue 20/5

20:25-16:20

1 stop18h 55m

£205

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Tue 30/9

15:00-20:40

2 stops6h 40m

London Heathrow

Tue 7/10

06:55-14:00

2 stops6h 05m

£222

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 12/5

14:30-08:10

1 stop18h 40m

London Heathrow

Thu 15/5

20:00-16:15

1 stop19h 15m

£276

KlagenfurtLondon

KLU - LTN

KLULTN

Klagenfurt

Fri 6/6

22:35-18:10

1 stop20h 35m

London Luton

Mon 9/6

15:30-08:15

1 stop15h 45m

£306

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 25 results
1
2
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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 25 April 2025.

The best time to book flights from Klagenfurt to London is 28 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 £112). Flying from Klagenfurt to London in August is currently the most expensive (average of £164). 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 30 April 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 30 April 2025.
Read through reviews of airlines operating flights from Klagenfurt to London, such as Austrian Airlines, Ryanair and Lufthansa. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
781 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.6

Entertainment

6.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
781 reviews
Austrian Airlines
7.6
Good
781 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.6

Entertainment

6.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Ryanair
6.8
Okay
5,054 reviews
Austrian Airlines
7.6
Good
781 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.6

Entertainment

6.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Lufthansa
6.7
Okay
7,044 reviews
Austrian Airlines
7.6
Good
781 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.6

Entertainment

6.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Eurowings
6.6
Okay
276 reviews
Austrian Airlines
7.6
Good
781 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.6

Entertainment

6.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

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.

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

    According to our current data, Ryanair (£51), Austrian Airlines (£175), and Lufthansa (£222) offers the cheapest pricing from Klagenfurt to London. Ryanair is currently priced 60% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Klagenfurt to London one-way?

    The cheapest airline one-way is Ryanair, with whom users have recently found tickets for as low as £29. However, be on the lookout for offers from Eurowings and Austrian Airlines, as they are both options that can get you from Klagenfurt to London for a low price.

  • 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 Gatwick 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 £112). Flying from Klagenfurt to London in August is currently the most expensive (average of £164). 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 Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Southend-on-Sea
Ilford
Crawley
Hayes
Ipswich
Watford
Wembley
Folkestone
Maidstone
Winchester
Dartford
Guildford

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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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