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Cheap flights from Klagenfurt to London from £49

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LON
6 Jul — 13 Jul1
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 1 July 2025.

Round-trip from

£49

Popular in

August

Cheapest in

January

Average price

£131

Good one-way deal

£23 or less
Ryanair
  • Ryanair
  • 10/7-13/7
  • Nonstop
  • 4h 10m total
  • Klagenfurt to London
Highest demand for flights based on searches. 10% potential increase in price (£9 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a one-way flight from Klagenfurt to London (LON).

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 1 July 2025.

Thu 16/1022:25KLU - STN
Nonstop2h 05mRyanair
Sun 19/1016:50STN - KLU
Nonstop2h 05mRyanair
Deal found 29/6£59
Wed 24/916:55KLU - STN
2 stops19h 55mMultiple Airlines
Thu 25/918:55STN - KLU
Nonstop2h 05mMultiple Airlines
Deal found 30/6£102
Wed 24/916:55KLU - LGW
1 stop16h 40mMultiple Airlines
Sat 27/920:00LGW - KLU
2 stops21h 40mMultiple Airlines
Deal found 30/6£147
Wed 24/916:55KLU - LTN
1 stop8h 55mMultiple Airlines
Sat 27/921:25LTN - KLU
2 stops20h 15mMultiple Airlines
Deal found 30/6£153
Sat 20/915:00KLU - LHR
1 stop7h 40mAustrian Airlines
Tue 30/906:00LHR - KLU
1 stop16h 25mAustrian Airlines
Deal found 29/6£173
Sat 26/705:45KLU - LHR
1 stop4h 15mMultiple Airlines
Thu 14/806:55LHR - KLU
2 stops6h 05mMultiple Airlines
Deal found 29/6£196
Wed 27/816:55KLU - LGW
2 stops18h 45mRyanair
Fri 29/812:20LGW - KLU
1 stop8h 50mRyanair
Deal found 29/6£201
Tue 22/708:45KLU - LTN
2 stops15h 35mRyanair
Tue 29/718:10LTN - KLU
2 stops21h 10mRyanair
Deal found 30/6£213
Thu 14/815:00KLU - LHR
2 stops17h 40mLufthansa
Thu 21/807:25LHR - KLU
2 stops5h 35mLufthansa
Deal found 30/6£214
Sun 14/921:10KLU - SEN
1 stop16h 00mMultiple Airlines
Thu 18/920:35SEN - KLU
2 stops24h 35mMultiple Airlines
Deal found 30/6£243
Mon 28/705:45KLU - LCY
2 stops11h 40mLufthansa
Mon 4/808:45LCY - KLU
2 stops13h 40mLufthansa
Deal found 30/6£279
Thu 7/805:45KLU - LCY
2 stops11h 40mMultiple Airlines
Thu 28/808:45LCY - KLU
2 stops13h 40mMultiple Airlines
Deal found 30/6£297

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 1 July 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 7/8

22:25-23:30

Nonstop2h 05m

London Stansted

Thu 28/8

18:55-22:00

Nonstop2h 05m

£55

KlagenfurtLondon

KLU - STN

KLUSTN

Klagenfurt

Wed 24/9

16:55-11:50

2 stops19h 55m

London Stansted

Thu 25/9

18:55-22:00

Nonstop2h 05m

£102

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Wed 24/9

16:55-08:35

1 stop16h 40m

London Gatwick

Sat 27/9

20:00-18:40

2 stops21h 40m

£147

KlagenfurtLondon

KLU - LTN

KLULTN

Klagenfurt

Wed 24/9

16:55-00:50

1 stop8h 55m

London Luton

Sat 27/9

21:25-18:40

2 stops20h 15m

£153

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 20/9

15:00-21:40

1 stop7h 40m

London Heathrow

Tue 30/9

06:00-23:25

1 stop16h 25m

£173

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 26/7

05:45-09:00

1 stop4h 15m

London Heathrow

Thu 14/8

06:55-14:00

2 stops6h 05m

£196

KlagenfurtLondon

KLU - LGW

KLULGW

Klagenfurt

Wed 27/8

16:55-10:40

2 stops18h 45m

London Gatwick

Fri 29/8

12:20-22:10

1 stop8h 50m

£201

KlagenfurtLondon

KLU - LTN

KLULTN

Klagenfurt

Tue 22/7

08:45-23:20

2 stops15h 35m

London Luton

Tue 29/7

18:10-16:20

2 stops21h 10m

£213

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 14/8

15:00-07:40

2 stops17h 40m

London Heathrow

Thu 21/8

07:25-14:00

2 stops5h 35m

£214

KlagenfurtLondon

KLU - SEN

KLUSEN

Klagenfurt

Sun 14/9

21:10-12:10

1 stop16h 00m

London Southend

Thu 18/9

20:35-22:10

2 stops24h 35m

£243

Flights are sorted by cheapest return flights first.

Deals found on 30/6

Showing 1-10 of 24 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 27 June 2025.

The best time to book flights from Klagenfurt to London is 13 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 1 July 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.

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 1 July 2025.
See what other customers who have flown with Austrian Airlines, Ryanair, andLufthansa from Klagenfurt to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.6

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Overall

7.6

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Overall

7.6

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Overall

7.6

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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 (£49), Austrian Airlines (£173), and Lufthansa (£214) offers the cheapest pricing from Klagenfurt to London. Ryanair is currently priced 57% 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 £58. However, be on the lookout for offers from Austrian Airlines and Lufthansa, 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?

  • 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
Hounslow
Croydon
Milton Keynes
Deal
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Maidstone
Guildford
Chichester

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