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

A quick flight from Klagenfurt to London Heathrow Airport can take about 11h 25m. Austrian Airlines provides one of the quickest options available for as low as £186. 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).

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.

£100+ Cheap Flights from Klagenfurt to London Heathrow Airport

Cheap flight deals from Klagenfurt to Heathrow

Enter your travel dates to find the best prices.

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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 2 September 2026.

Sat 10/1015:00 -

1 stop4h 40m

Wed 14/1006:00 -

1 stop16h 20m

Deal found 29/8£181

Wed 14/1015:00 -

1 stop7h 40m

Sun 18/1006:00 -

1 stop7h 00m

Deal found 2/9£183

Tue 13/1015:00 -

1 stop18h 20m

Sat 17/1006:00 -

1 stop7h 00m

Deal found 31/8£185

Fri 27/1111:15 -

1 stop11h 25m

Sun 29/1106:00 -

1 stop3h 30m

Deal found 31/8£186

Mon 12/1015:00 -

1 stop7h 40m

Sat 17/1006:00 -

1 stop7h 00m

Deal found 29/8£187

Wed 14/1015:00 -

1 stop7h 40m

Tue 20/1006:00 -

1 stop7h 00m

Deal found 1/9£191

Sat 26/905:50 -

1 stop16h 50m

Mon 28/906:00 -

1 stop6h 55m

Deal found 31/8£194

Find flight deals from Klagenfurt to Heathrow

Round-trip from	£181
One-way from	£100
Popular in	March
Cheapest in	January
Average price	£93

Austrian Airlines
10/10-14/10
2 total stops
21h 00m total
Klagenfurt to London

Search Deals

27/10
2 total stops
19h 15m total
Klagenfurt to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£7 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 9% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Cheapest return flight

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Fri 27/11

11:15-21:40

1 stop11h 25m

London Heathrow

Mon 30/11

06:00-10:55

1 stop3h 55m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Wed 20/1

11:15-14:05

1 stop3h 50m

London Heathrow

Sat 23/1

19:25-10:30

1 stop14h 05m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Mon 12/10

15:00-21:40

1 stop7h 40m

London Heathrow

Sat 17/10

06:00-14:00

1 stop7h 00m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Fri 27/11

11:15-21:40

1 stop11h 25m

London Heathrow

Sun 29/11

06:00-10:30

1 stop3h 30m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Wed 14/10

15:00-21:40

1 stop7h 40m

London Heathrow

Sat 17/10

06:00-14:00

1 stop7h 00m

£186

Fastest return journey

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Thu 26/11

11:40-18:40

1 stop8h 00m

London Heathrow

Sun 29/11

06:00-10:30

1 stop3h 30m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sat 26/9

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 5/10

06:00-13:55

1 stop6h 55m

£197

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sat 26/9

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 28/9

06:00-13:55

1 stop6h 55m

£197

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Thu 3/12

11:40-21:40

1 stop11h 00m

London Heathrow

Mon 7/12

06:00-10:55

1 stop3h 55m

£204

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sat 19/9

15:00-21:40

1 stop7h 40m

London Heathrow

Wed 23/9

06:00-14:00

1 stop7h 00m

£216

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 21 resultsSorted by cheapest first

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.

KLU-LHR

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

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 11h 25m. Austrian Airlines provides one of the quickest options available for as low as £186. 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.

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Cheap flights from Klagenfurt to London Heathrow Airport from £100

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Klagenfurt to Heathrow

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 2 September 2026.

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 2 September 2026.

Best flights from Klagenfurt to HeathrowDiscover 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 2 September 2026.

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 2 September 2026.

Last-minute flights from Klagenfurt to HeathrowDiscover last-minute flight deals from Klagenfurt to Heathrow. Data last updated 2 September 2026 and is based on user searches.

Discover last-minute flight deals from Klagenfurt to Heathrow. Data last updated 2 September 2026 and is based on user searches.

One-way flights from Klagenfurt to HeathrowSearch for one-way flight options from Klagenfurt to Heathrow. Find affordable one-way fares based on user searches. Data last updated 2 September 2026.

Search for one-way flight options from Klagenfurt to Heathrow. Find affordable one-way fares based on user searches. Data last updated 2 September 2026.

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Best time to book a flight from Klagenfurt to Heathrow

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Related info for your journey

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?

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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 2 September 2026.

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 2 September 2026.

Last-minute flights from Klagenfurt to Heathrow
Discover last-minute flight deals from Klagenfurt to Heathrow. Data last updated 2 September 2026 and is based on user searches.

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 2 September 2026.