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Cheap flights from London to Klagenfurt from £40

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KLU
18 Jun — 25 Jun1
1 adult

Cheap 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 13 June 2025.

Round-trip from

£40

Popular in

December

Cheapest in

January

Average price

£138

Good round-trip deal

£50 or less

Good one-way deal

£93 or less
Ryanair
  • Ryanair
  • 3/7-20/7
  • Nonstop
  • 4h 10m total
  • London to Klagenfurt
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High demand for flights, 10% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from London (LON) to Klagenfurt.
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Price to beat on a one-way flight from London (LON) to Klagenfurt.
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Find flight deals from London to Klagenfurt

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 13 June 2025.

Thu 10/718:55STN - KLU
Nonstop2h 05mRyanair
Thu 17/722:25KLU - STN
Nonstop2h 05mRyanair
Deal found 12/6£62
Thu 10/718:55STN - KLU
Nonstop2h 05mMultiple Airlines
Thu 17/714:55KLU - STN
2 stops32h 00mMultiple Airlines
Deal found 12/6£122
Tue 24/611:40LTN - KLU
1 stop27h 40mMultiple Airlines
Tue 1/708:45KLU - LTN
1 stop24h 15mMultiple Airlines
Deal found 12/6£134
Mon 8/921:35LGW - KLU
1 stop9h 40mMultiple Airlines
Thu 11/914:55KLU - LGW
1 stop18h 45mMultiple Airlines
Deal found 12/6£157
Sun 14/906:00LHR - KLU
1 stop16h 25mAustrian Airlines
Thu 18/915:00KLU - LHR
1 stop7h 40mAustrian Airlines
Deal found 12/6£174
Wed 6/807:25LHR - KLU
2 stops5h 35mMultiple Airlines
Tue 12/805:45KLU - LHR
1 stop9h 35mMultiple Airlines
Deal found 11/6£202
Thu 3/717:30LTN - KLU
1 stop27h 40mRyanair
Sun 6/721:10KLU - LTN
1 stop25h 00mRyanair
Deal found 11/6£206
Thu 10/706:55LHR - KLU
2 stops6h 05mLufthansa
Thu 17/715:00KLU - LHR
2 stops8h 40mLufthansa
Deal found 12/6£216
Mon 8/906:30SEN - KLU
1 stop24h 45mMultiple Airlines
Thu 11/914:55KLU - SEN
1 stop6h 10mMultiple Airlines
Deal found 12/6£230
Fri 11/712:20LGW - KLU
1 stop8h 50mRyanair
Sun 13/719:15KLU - LGW
1 stop22h 45mRyanair
Deal found 12/6£244
Wed 6/808:45LCY - KLU
2 stops13h 40mLufthansa
Tue 12/805:45KLU - LCY
2 stops11h 40mLufthansa
Deal found 11/6£269
Thu 7/808:45LCY - KLU
2 stops13h 40mMultiple Airlines
Wed 13/805:45KLU - LCY
2 stops11h 40mMultiple Airlines
Deal found 11/6£327

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 13 June 2025.
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

Thu 3/7

18:55-22:00

Nonstop2h 05m

Klagenfurt

Thu 10/7

22:25-23:30

Nonstop2h 05m

£49

LondonKlagenfurt

STN - KLU

STNKLU

London Stansted

Thu 10/7

18:55-22:00

Nonstop2h 05m

Klagenfurt

Thu 17/7

14:55-21:55

2 stops32h 00m

£122

LondonKlagenfurt

LTN - KLU

LTNKLU

London Luton

Tue 24/6

11:40-16:20

1 stop27h 40m

Klagenfurt

Tue 1/7

08:45-08:00

1 stop24h 15m

£134

LondonKlagenfurt

LGW - KLU

LGWKLU

London Gatwick

Mon 8/9

21:35-08:15

1 stop9h 40m

Klagenfurt

Thu 11/9

14:55-08:40

1 stop18h 45m

£157

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sun 14/9

06:00-23:25

1 stop16h 25m

Klagenfurt

Thu 18/9

15:00-21:40

1 stop7h 40m

£174

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Wed 6/8

07:25-14:00

2 stops5h 35m

Klagenfurt

Tue 12/8

05:45-14:20

1 stop9h 35m

£202

LondonKlagenfurt

LTN - KLU

LTNKLU

London Luton

Thu 3/7

17:30-22:10

1 stop27h 40m

Klagenfurt

Sun 6/7

21:10-21:10

1 stop25h 00m

£206

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 10/7

06:55-14:00

2 stops6h 05m

Klagenfurt

Thu 17/7

15:00-22:40

2 stops8h 40m

£216

LondonKlagenfurt

SEN - KLU

SENKLU

London Southend

Mon 8/9

06:30-08:15

1 stop24h 45m

Klagenfurt

Thu 11/9

14:55-20:05

1 stop6h 10m

£230

LondonKlagenfurt

LGW - KLU

LGWKLU

London Gatwick

Fri 11/7

12:20-22:10

1 stop8h 50m

Klagenfurt

Sun 13/7

19:15-17:00

1 stop22h 45m

£244

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 25 results
1
2
3

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 9 June 2025.

To ensure you get the cheapest price possible for a flight from London to Klagenfurt, you should look to book at least 77 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 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 13 June 2025.

It’s typically best to fly out from London to Klagenfurt in the afternoon. Doing so could potentially save you 59% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in Klagenfurt by month

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

In terms of precipitation, rainfall in Klagenfurt ranges from 40.0 - 110.0 inches per month. June is typically the wettest month, when rainfall can reach 110.0 mm. January is typically the driest time to visit Klagenfurt when rainfall is around 40.0 mm.

Temperature in Klagenfurt by month

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

If weather is an important factor for your trip to Klagenfurt, 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 19.0 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 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 13 June 2025.
To help decide which airline to fly from London to Klagenfurt, see what other customers have to say about Austrian Airlines, Ryanair and Lufthansa. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
802 reviews
Check prices

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!
Ryanair
6.9
Okay
5,121 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!
Lufthansa
6.8
Okay
7,139 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Shuguang,May 2025

VIE - BOS

I will fly again and highly recommend Austrian Airlines to my family, friends and colleagues!

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.

  • 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 £40. Additional return tickets that might be worth considering are offered by Austrian Airlines and Lufthansa, with the lowest prices starting at £174 and £216, respectively. You may be able to fly from London to Klagenfurt for 73% less than the average price by searching for these airlines.

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

    The cheapet airlines for a one-way flight from London to Klagenfurt are Ryanair (£62), Austrian Airlines (£137), and Lufthansa (£157).

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

    While some choose either London Gatwick - Klagenfurt or London Luton - Klagenfurt, London Heathrow - 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.

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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£38Average£101FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Austrian AirlinesCheapest£154Average£251FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

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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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