Find flights
When to book
FAQs

Cheap flights from Klagenfurt to London Heathrow Airport from £82

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LHR
29 Apr — 6 Mai1
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 30 März 2026.

Sa 18/415:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Mi 22/406:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 27/3£185
Sa 18/405:50
KLU
-
LHR
1 stop16h 50m
Austrian Airlines
Sa 25/406:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 26/3£186
Sa 25/415:00
KLU
-
LHR
1 stop4h 40m
Austrian Airlines
Di 28/406:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 26/3£187
Do 23/405:50
KLU
-
LHR
1 stop16h 50m
Austrian Airlines
So 26/406:00
LHR
-
KLU
1 stop3h 30m
Austrian Airlines
Deal found 26/3£189
Sa 2/515:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Mi 6/509:05
LHR
-
KLU
1 stop13h 15m
Austrian Airlines
Deal found 27/3£191
Sa 9/511:10
KLU
-
LHR
1 stop11h 30m
Austrian Airlines
Mi 13/506:00
LHR
-
KLU
1 stop3h 30m
Austrian Airlines
Deal found 26/3£195
Sa 13/605:50
KLU
-
LHR
1 stop16h 50m
Austrian Airlines
Mi 17/606:00
LHR
-
KLU
1 stop16h 20m
Austrian Airlines
Deal found 27/3£195
Mi 23/915:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Mi 30/906:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 26/3£196
Mi 27/515:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Mo 1/606:00
LHR
-
KLU
1 stop7h 50m
Austrian Airlines
Deal found 26/3£199
Sa 18/415:00
KLU
-
LHR
1 stop7h 40m
Multiple Airlines
Mi 22/406:55
LHR
-
KLU
2 stops6h 05m
Multiple Airlines
Deal found 27/3£201
Sa 25/415:00
KLU
-
LHR
1 stop7h 40m
Multiple Airlines
Di 28/406:55
LHR
-
KLU
2 stops6h 05m
Multiple Airlines
Deal found 26/3£201
Fr 11/915:00
KLU
-
LHR
1 stop7h 40m
Austrian Airlines
Fr 18/906:00
LHR
-
KLU
1 stop7h 00m
Austrian Airlines
Deal found 26/3£202

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 30 März 2026.

Round-trip from

£185

One-way from

£82

Popular in

August

Cheapest in

January

Average price

£176
Austrian Airlines
  • Austrian Airlines
  • 18/4-22/4
  • 2 total stops
  • 14h 40m total
  • Klagenfurt to London
Search Deals
20/4
  • 20/4
  • 2 total stops
  • 18h 25m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 30 März 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

Sa 25/4

15:00-21:40

1 stop7h 40m

London Heathrow

So 26/4

06:00-10:30

1 stop3h 30m

£186

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sa 25/4

15:00-18:40

1 stop4h 40m

London Heathrow

Di 28/4

06:00-14:00

1 stop7h 00m

£187

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sa 9/5

11:10-21:40

1 stop11h 30m

London Heathrow

Fr 15/5

06:00-14:00

1 stop7h 00m

£187

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 7/5

15:00-21:40

1 stop7h 40m

London Heathrow

So 17/5

06:00-10:30

1 stop3h 30m

£249

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 16/7

11:10-18:40

1 stop8h 30m

London Heathrow

Sa 18/7

06:30-14:00

2 stops6h 30m

£258

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 16/7

11:10-21:40

1 stop11h 30m

London Heathrow

Sa 18/7

06:00-14:00

1 stop7h 00m

£262

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 2/7

11:10-21:40

1 stop11h 30m

London Heathrow

So 5/7

06:00-13:25

1 stop6h 25m

£287

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 2/7

11:10-18:40

2 stops8h 30m

London Heathrow

So 5/7

06:00-13:25

1 stop6h 25m

£290

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fr 22/5

11:10-21:40

1 stop11h 30m

London Heathrow

So 24/5

06:00-14:00

1 stop7h 00m

£303

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Do 7/5

15:00-21:40

1 stop7h 40m

London Heathrow

Sa 16/5

20:25-10:30

2 stops13h 05m

£308

Flights are sorted by cheapest return flights first.

Deals found on 29/3

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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.

Cheapflights Insights

Everything you need to know about your flight from Klagenfurt to London Heathrow Airport

What is the cheapest month to book a flight from Klagenfurt to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £154). Flying from Klagenfurt to London Heathrow Airport in September is currently the most expensive (average of £225). 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.

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 6h 40m. Austrian Airlines provides one of the quickest options available for as low as £240. Klagenfurt and London Heathrow Airport are separated by a distance of 745 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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.

  • What is the cheapest month to book a flight from Klagenfurt to London Heathrow Airport?

    Currently, February is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £154). Flying from Klagenfurt to London Heathrow Airport in September is currently the most expensive (average of £225). 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 London Heathrow Airport?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Klagenfurt to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Klagenfurt to Heathrow for you. Better yet — we are completely free to use.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.