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

A quick flight from Klagenfurt to London Heathrow Airport can take about 4h 40m. Austrian Airlines provides one of the quickest options available for as low as £178. Klagenfurt and London Heathrow Airport are separated by a distance of 745 mi.

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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).

How far in advance should I book a flight from Klagenfurt to London Heathrow Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 24 days in advance, which can save you up to 65% on flights from Klagenfurt to London Heathrow Airport compared to booking the week you need them. Waiting 24 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £59. For sooner than that we have options available in the next 3 days from £82.

What is the cheapest month to fly from Klagenfurt to London Heathrow Airport?

January can be a great time to fly to London Heathrow Airport from Klagenfurt with a flight ticket averaging about £117. Cheapflights users have found deals in the month of January for as cheap as £30. The most expensive prices can be found in the month of August.

What is the cheapest time of day to fly from KLU to LHR?

When flying from Klagenfurt to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£101+ Cheap Flights from Klagenfurt to London Heathrow Airport

Cheap flight deals from Klagenfurt to Heathrow

Round-trip from	£175
One-way from	£101
Popular in	December
Cheapest in	January
Average price	£207

Austrian Airlines
14/11-17/11
2 total stops
11h 45m total
Klagenfurt to London

Search Deals

24/10
2 total stops
22h 30m total
Klagenfurt to London

Search Deals

Highest demand for flights based on searches. 0% potential increase in price (£1 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£7 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Klagenfurt to Heathrow

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 16 September 2025.

Fri 14/1114:50KLU - LHR

1 stop4h 50mAustrian Airlines

Mon 17/1106:00LHR - KLU

1 stop6h 55mAustrian Airlines

Deal found 14/9£175

Wed 29/1014:50KLU - LHR

1 stop7h 50mAustrian Airlines

Wed 5/1106:00LHR - KLU

1 stop6h 55mAustrian Airlines

Deal found 14/9£176

Fri 31/1005:45KLU - LHR

1 stop16h 55mAustrian Airlines

Fri 7/1106:00LHR - KLU

1 stop16h 25mAustrian Airlines

Deal found 16/9£177

Sat 18/1005:45KLU - LHR

1 stop9h 35mAustrian Airlines

Tue 21/1015:05LHR - KLU

1 stop7h 20mAustrian Airlines

Deal found 14/9£177

Wed 8/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Sun 12/1009:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 14/9£178

Sat 18/1015:00KLU - LHR

1 stop7h 40mAustrian Airlines

Mon 20/1006:00LHR - KLU

1 stop7h 00mAustrian Airlines

Deal found 14/9£182

Thu 16/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Tue 21/1009:05LHR - KLU

1 stop3h 55mAustrian Airlines

Deal found 14/9£184

Thu 11/1205:45KLU - LHR

1 stop9h 20mAustrian Airlines

Sun 14/1206:00LHR - KLU

1 stop6h 55mAustrian Airlines

Deal found 15/9£187

Mon 1/1214:50KLU - LHR

1 stop7h 50mAustrian Airlines

Sat 6/1206:00LHR - KLU

1 stop6h 55mAustrian Airlines

Deal found 15/9£189

Thu 2/1015:00KLU - LHR

1 stop7h 40mAustrian Airlines

Thu 9/1009:05LHR - KLU

1 stop3h 55mAustrian Airlines

Deal found 14/9£191

Thu 9/1005:45KLU - LHR

1 stop4h 00mAustrian Airlines

Sun 12/1015:05LHR - KLU

1 stop7h 20mAustrian Airlines

Deal found 14/9£192

Wed 29/1014:50KLU - LHR

1 stop24h 15mAustrian Airlines

Sun 2/1105:00LHR - KLU

1 stop16h 25mAustrian Airlines

Deal found 15/9£193

Best flights from Klagenfurt to Heathrow
Discover carefully curated flight deals from Klagenfurt to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Wed 8/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Tue 14/1010:25LHR - KLU

1 stop12h 00mAustrian Airlines

Deal found 14/9£178

Wed 29/1014:50KLU - LHR

1 stop7h 50mAustrian Airlines

Mon 3/1109:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 15/9£178

Tue 7/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Wed 15/1015:05LHR - KLU

1 stop7h 20mAustrian Airlines

Deal found 14/9£178

Wed 29/1014:50KLU - LHR

1 stop7h 50mAustrian Airlines

Wed 5/1106:00LHR - KLU

1 stop6h 55mAustrian Airlines

Deal found 15/9£178

Fri 10/1005:45KLU - LHR

1 stop4h 00mAustrian Airlines

Sun 12/1009:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 14/9£178

Wed 15/1005:45KLU - LHR

1 stop13h 55mAustrian Airlines

Wed 22/1009:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 15/9£178

Wed 8/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Sat 11/1009:05LHR - KLU

1 stop3h 55mAustrian Airlines

Deal found 14/9£178

Wed 8/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Sun 12/1009:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 14/9£178

Thu 12/314:50KLU - LHR

1 stop4h 50mAustrian Airlines

Sun 15/309:05LHR - KLU

1 stop13h 20mAustrian Airlines

Deal found 13/9£178

Fri 31/1005:45KLU - LHR

1 stop9h 20mAustrian Airlines

Tue 4/1114:50LHR - KLU

1 stop7h 35mAustrian Airlines

Deal found 15/9£178

Last-minute flights from Klagenfurt to Heathrow
Discover last-minute flight deals from Klagenfurt to Heathrow. Data last updated 16 September 2025 and is based on user searches.

Sun 21/915:00KLU - LHR

1 stop19h 00mAustrian Airlines

Tue 14/1006:00LHR - KLU

1 stop7h 00mAustrian Airlines

Deal found 14/9£210

Sun 21/915:00KLU - LHR

1 stop18h 20mMultiple Airlines

Tue 14/1006:55LHR - KLU

2 stops6h 05mMultiple Airlines

Deal found 14/9£241

Mon 22/915:00KLU - LHR

1 stop7h 40mAustrian Airlines

Wed 15/1015:05LHR - KLU

1 stop7h 20mAustrian Airlines

Deal found 15/9£210

Mon 22/915:00KLU - LHR

1 stop7h 40mMultiple Airlines

Wed 15/1006:55LHR - KLU

2 stops6h 05mMultiple Airlines

Deal found 15/9£233

Tue 23/905:45KLU - LHR

1 stop4h 00mAustrian Airlines

Thu 16/1009:05LHR - KLU

1 stop3h 55mAustrian Airlines

Deal found 16/9£214

Tue 23/915:00KLU - LHR

2 stops6h 45mMultiple Airlines

Thu 16/1009:05LHR - KLU

1 stop3h 55mMultiple Airlines

Deal found 16/9£242

Thu 25/905:45KLU - LHR

1 stop4h 00mAustrian Airlines

Tue 30/906:00LHR - KLU

1 stop7h 00mAustrian Airlines

Deal found 15/9£227

Thu 25/905:45KLU - LHR

1 stop4h 00mAustrian Airlines

Sun 21/1209:05LHR - KLU

1 stop3h 50mAustrian Airlines

Deal found 15/9£244

Thu 25/905:45KLU - LHR

1 stop4h 00mMultiple Airlines

Tue 30/906:55LHR - KLU

2 stops6h 05mMultiple Airlines

Deal found 15/9£253

One-way flights from Klagenfurt to Heathrow
Search for one-way flight options from Klagenfurt to Heathrow. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Fri 24/1022:35KLU - LHR

2 stops22h 30mMultiple Airlines

Deal found 14/9£101

Thu 23/1014:55KLU - LHR

2 stops19h 15mMultiple Airlines

Deal found 15/9£104

Thu 27/1105:45KLU - LHR

1 stop9h 20mAustrian Airlines

Deal found 15/9£139

Wed 29/1014:50KLU - LHR

1 stop7h 50mAustrian Airlines

Deal found 15/9£140

Mon 1/1214:50KLU - LHR

1 stop7h 50mAustrian Airlines

Deal found 15/9£152

Fri 24/1016:55KLU - LHR

1 stop16h 15mEurowings

Deal found 14/9£154

Wed 29/1014:50KLU - LHR

2 stops9h 05mLufthansa

Deal found 15/9£157

Thu 27/1114:50KLU - LHR

2 stops9h 05mLufthansa

Deal found 15/9£160

Thu 23/1015:00KLU - LHR

1 stop4h 40mAustrian Airlines

Deal found 15/9£164

Fri 31/1005:45KLU - LHR

2 stops11h 05mLufthansa

Deal found 15/9£182

Sat 1/1114:50KLU - LHR

2 stops8h 30mLufthansa

Deal found 15/9£184

Sat 27/1216:00KLU - LHR

1 stop6h 40mAustrian Airlines

Deal found 15/9£197

Cheapflights Fare Finder

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

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 8/10

15:00-18:40

1 stop4h 40m

London Heathrow

Tue 14/10

10:25-23:25

1 stop12h 00m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 29/10

14:50-21:40

1 stop7h 50m

London Heathrow

Mon 3/11

09:05-23:25

1 stop13h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Tue 7/10

15:00-18:40

1 stop4h 40m

London Heathrow

Wed 15/10

15:05-23:25

1 stop7h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 29/10

14:50-21:40

1 stop7h 50m

London Heathrow

Wed 5/11

06:00-13:55

1 stop6h 55m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 10/10

05:45-08:45

1 stop4h 00m

London Heathrow

Sun 12/10

09:05-23:25

1 stop13h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 15/10

05:45-18:40

1 stop13h 55m

London Heathrow

Wed 22/10

09:05-23:25

1 stop13h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 8/10

15:00-18:40

1 stop4h 40m

London Heathrow

Sat 11/10

09:05-14:00

1 stop3h 55m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 8/10

15:00-18:40

1 stop4h 40m

London Heathrow

Sun 12/10

09:05-23:25

1 stop13h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 12/3

14:50-18:40

1 stop4h 50m

London Heathrow

Sun 15/3

09:05-23:25

1 stop13h 20m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 31/10

05:45-14:05

1 stop9h 20m

London Heathrow

Tue 4/11

14:50-23:25

1 stop7h 35m

£178

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 22 results

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, January is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £112). Flying from Klagenfurt to London Heathrow Airport 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.

Related info for your journey

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 4h 40m. Austrian Airlines provides one of the quickest options available for as low as £178. 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.
What is the cheapest month to book a flight from Klagenfurt to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £112). Flying from Klagenfurt to London Heathrow Airport 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.

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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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Cheap flights from Klagenfurt to London Heathrow Airport from £101

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 24/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Klagenfurt to Heathrow

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Find flight deals from Klagenfurt to Heathrow

Cheapest flights from Klagenfurt to HeathrowExplore 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 16 September 2025.

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 16 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Klagenfurt to London Heathrow Airport that are best for you.

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.

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?

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?

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

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

How can I find direct flights from Klagenfurt to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Klagenfurt to Heathrow

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

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

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

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

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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 16 September 2025.