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Cheap flights from Klagenfurt to London Heathrow Airport from £90

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LHR
8 Aug — 15 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Klagenfurt to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Klagenfurt to Heathrow
Explore the most affordable flight options available from Klagenfurt to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 July 2026.

Sat 1/815:00
KLU
-
LHR
1 stop4h 40m
Austrian Airlines
Sat 29/806:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 6/7£215
Mon 24/818:40
KLU
-
LHR
1 stop14h 40m
Austrian Airlines
Mon 31/806:00
LHR
-
KLU
1 stop11h 00m
Austrian Airlines
Deal found 6/7£216
Sat 1/815:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Sun 9/806:00
LHR
-
KLU
1 stop6h 25m
Austrian Airlines
Deal found 8/7£217
Wed 19/815:00
KLU
-
LHR
1 stop18h 20m
Austrian Airlines
Mon 31/806:00
LHR
-
KLU
1 stop11h 00m
Austrian Airlines
Deal found 7/7£218
Thu 8/1005:50
KLU
-
LHR
1 stop6h 35m
Austrian Airlines
Mon 12/1006:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 9/7£219
Fri 30/1014:50
KLU
-
LHR
1 stop18h 30m
Austrian Airlines
Mon 2/1106:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 9/7£220
Mon 7/915:00
KLU
-
LHR
1 stop18h 20m
Austrian Airlines
Sat 12/906:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 8/7£221
Wed 25/1114:50
KLU
-
LHR
1 stop4h 50m
Austrian Airlines
Sat 28/1106:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 5/7£228
Sun 11/1015:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Sat 17/1006:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 7/7£231
Fri 7/814:15
KLU
-
LHR
1 stop8h 25m
Austrian Airlines
Mon 10/806:00
LHR
-
KLU
1 stop11h 00m
Austrian Airlines
Deal found 9/7£232
Sun 2/814:05
KLU
-
LHR
1 stop8h 35m
Austrian Airlines
Sat 8/806:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 9/7£233

Find flight deals from Klagenfurt to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Klagenfurt (KLU) to Heathrow (LHR). 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 9 July 2026.

Round-trip from

£215

One-way from

£90

Popular in

March

Cheapest in

January

Average price

£133
Austrian Airlines
  • Austrian Airlines
  • 1/8-29/8
  • 2 total stops
  • 11h 40m total
  • Klagenfurt to London
Search Deals
29/9
  • 29/9
  • 2 total stops
  • 18h 55m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£6 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Klagenfurt to Heathrow 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 9 July 2026.
Use the filters below to find and compare flights from Klagenfurt to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 1/8

15:00-21:40

1 stop7h 40m

London Heathrow

Wed 5/8

09:05-14:00

1 stop3h 55m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 25/11

14:50-21:40

1 stop7h 50m

London Heathrow

Sun 29/11

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 17/8

18:40-08:20

1 stop14h 40m

London Heathrow

Mon 24/8

06:00-18:00

1 stop11h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 10/12

05:45-14:05

1 stop9h 20m

London Heathrow

Sun 13/12

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 9/11

14:50-21:40

1 stop7h 50m

London Heathrow

Sat 14/11

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 2/10

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 5/10

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 27/11

14:50-21:40

1 stop7h 50m

London Heathrow

Sat 28/11

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 5/11

14:50-21:40

1 stop7h 50m

London Heathrow

Sat 7/11

09:05-14:00

1 stop3h 55m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 9/11

14:50-21:40

1 stop7h 50m

London Heathrow

Fri 13/11

06:00-14:00

1 stop7h 00m

£219

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sun 11/10

15:00-21:40

1 stop7h 40m

London Heathrow

Fri 16/10

06:00-14:00

1 stop7h 00m

£231

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from Klagenfurt to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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.

Related info for your journey

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

    Klagenfurt (KLU) is the airport you will fly out of if you book a flight from Klagenfurt to London Heathrow. You should not have trouble finding flights to London Heathrow from Klagenfurt; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Klagenfurt airport to London Heathrow. It is only a 2.0 mi journey to Klagenfurt (KLU) from Klagenfurt’s city center.

  • How long is the flight from Klagenfurt to London Heathrow Airport?

    A quick flight from Klagenfurt to London Heathrow Airport can take about 7h 40m. Austrian Airlines provides one of the quickest options available for as low as £219. Klagenfurt and London Heathrow Airport are separated by a distance of 745 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Klagenfurt to Heathrow 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Croydon
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Eastbourne
Swindon
Poole
Southall
Aylesbury
Romford

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

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

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Can Cheapflights find flights from Klagenfurt to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Klagenfurt to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Klagenfurt to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Klagenfurt today and book when prices fit your budget.

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