When did momondo last update prices for flights from Klagenfurt Airport to London Heathrow Airport?

Prices for flights from Klagenfurt Airport to London Heathrow Airport were last updated today.

How old do you have to be to fly from Klagenfurt Airport to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Klagenfurt Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£78 Cheap Flights from Klagenfurt to London Heathrow Airport in 2026

Find the cheapest flights from Klagenfurt to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 13:55LHR London Heathrow-KLU Klagenfurt

6h 55m1 stop Vienna Intl

£182Austrian Airlines

Sat, 17 Oct - Mon, 19 Oct

15:00 - 18:40KLU Klagenfurt-LHR London Heathrow

4h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£185Austrian Airlines

Sat, 10 Oct - Wed, 14 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£186Austrian Airlines

Wed, 7 Oct - Sun, 11 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£187Austrian Airlines

Sat, 17 Oct - Sun, 18 Oct

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 23:20LHR London Heathrow-KLU Klagenfurt

16h 20m1 stop Vienna Intl

£188Austrian Airlines

Sun, 11 Oct - Sun, 18 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£192Austrian Airlines

Mon, 12 Oct - Sat, 17 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£195Austrian Airlines

Thu, 8 Oct - Tue, 13 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 13:55LHR London Heathrow-KLU Klagenfurt

6h 55m1 stop Vienna Intl

£196Austrian Airlines

Fri, 9 Oct - Mon, 12 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£197Austrian Airlines

Thu, 8 Oct - Sun, 11 Oct

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 13:55LHR London Heathrow-KLU Klagenfurt

6h 55m1 stop Vienna Intl

£198Austrian Airlines

Tue, 6 Oct - Mon, 12 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

15:00 - 21:40KLU Klagenfurt-LHR London Heathrow

7h 40m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£240Austrian Airlines

Sat, 19 Sep - Wed, 23 Sep

05:50 - 12:50KLU Klagenfurt-LHR London Heathrow

8h 00m2 stops Vienna Intl Munich Franz Josef Strauss

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£245Multiple Airlines

Thu, 17 Sep - Sat, 10 Oct

05:50 - 12:50KLU Klagenfurt-LHR London Heathrow

8h 00m2 stops Vienna Intl Munich Franz Josef Strauss

07:25 - 14:00LHR London Heathrow-KLU Klagenfurt

5h 35m2 stops Munich Franz Josef Strauss Vienna Intl

£259Lufthansa

Thu, 17 Sep - Sat, 10 Oct

15:00 - 20:45KLU Klagenfurt-LHR London Heathrow

6h 45m2 stops Vienna Intl Munich Franz Josef Strauss

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£262Multiple Airlines

Sat, 19 Sep - Wed, 23 Sep

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£271Austrian Airlines

Wed, 16 Sep - Sat, 19 Sep

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£271Austrian Airlines

Thu, 17 Sep - Sat, 10 Oct

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

19:30 - 14:00LHR London Heathrow-KLU Klagenfurt

17h 30m1 stop Vienna Intl

£273Austrian Airlines

Sun, 20 Sep - Tue, 13 Oct

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 23:20LHR London Heathrow-KLU Klagenfurt

16h 20m1 stop Vienna Intl

£285Austrian Airlines

Wed, 16 Sep - Sun, 20 Sep

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£289Austrian Airlines

Fri, 18 Sep - Mon, 21 Sep

15:00 - 08:20KLU Klagenfurt-LHR London Heathrow

18h 20m1 stop Vienna Intl

06:00 - 14:00LHR London Heathrow-KLU Klagenfurt

7h 00m1 stop Vienna Intl

£290Austrian Airlines

Fri, 18 Sep - Sun, 11 Oct

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Austrian Airlines flights from Klagenfurt to London Heathrow Airport

Our best Austrian Airlines deals on Klagenfurt to London Heathrow Airport flight tickets

Austrian Airlines

17 Oct

KLU15:00Klagenfurt

7h 40m

1 stop

LHR21:40London Heathrow

19 Oct

LHR06:00London Heathrow

6h 55m

1 stop

KLU13:55Klagenfurt

£182

Austrian Airlines

10 Oct

KLU15:00Klagenfurt

4h 40m

1 stop

LHR18:40London Heathrow

14 Oct

LHR06:00London Heathrow

7h 00m

1 stop

KLU14:00Klagenfurt

£185

Austrian Airlines

7 Oct

KLU15:00Klagenfurt

7h 40m

1 stop

LHR21:40London Heathrow

10 Oct

LHR06:00London Heathrow

7h 00m

1 stop

KLU14:00Klagenfurt

£186

Lufthansa flights from Klagenfurt to London Heathrow Airport

Our best Lufthansa deals on Klagenfurt to London Heathrow Airport flight tickets

Lufthansa

5 Oct

KLU05:50Klagenfurt

17h 20m

2 stops

LHR22:10London Heathrow

10 Oct

LHR07:25London Heathrow

5h 35m

2 stops

KLU14:00Klagenfurt

£222

Lufthansa

15 Oct

KLU05:50Klagenfurt

11h 50m

2 stops

LHR16:40London Heathrow

18 Oct

LHR07:25London Heathrow

5h 35m

2 stops

KLU14:00Klagenfurt

£230

Lufthansa

15 Oct

KLU05:50Klagenfurt

11h 50m

2 stops

LHR16:40London Heathrow

18 Oct

LHR07:25London Heathrow

5h 35m

2 stops

KLU14:00Klagenfurt

£231

momondo 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

Sat 17/10

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 19/10

06:00-13:55

1 stop6h 55m

£182

Fastest return journey

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sat 10/10

15:00-18:40

1 stop4h 40m

London Heathrow

Wed 14/10

06:00-14:00

1 stop7h 00m

£185

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Wed 7/10

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 11/10

06:00-14:00

1 stop7h 00m

£186

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sat 17/10

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 18/10

06:00-14:00

1 stop7h 00m

£187

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Sun 11/10

15:00-08:20

1 stop18h 20m

London Heathrow

Sun 18/10

06:00-23:20

1 stop16h 20m

£188

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

£192

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Thu 8/10

15:00-21:40

1 stop7h 40m

London Heathrow

Tue 13/10

06:00-14:00

1 stop7h 00m

£195

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Fri 9/10

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 12/10

06:00-13:55

1 stop6h 55m

£196

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Thu 8/10

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 11/10

06:00-14:00

1 stop7h 00m

£197

KlagenfurtLondon

KLU Klagenfurt - LHR London Heathrow

KLULHR

Klagenfurt

Tue 6/10

15:00-21:40

1 stop7h 40m

London Heathrow

Mon 12/10

06:00-13:55

1 stop6h 55m

£198

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Klagenfurt to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Klagenfurt to London Heathrow?

Austrian Airlines is the most popular carrier operating from Klagenfurt to London Heathrow

When to book flights from Klagenfurt to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Klagenfurt to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Klagenfurt to London Heathrow Airport (KLU to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Klagenfurt to London Heathrow Airport

Best price found	£78
Fastest flight time	4h 40m
Direct flights	None

The best one-way flight to London Heathrow Airport from Klagenfurt in the past 72 hours is £78. The best return flight deal from Klagenfurt to London Heathrow Airport found on momondo in the last 72 hours is £182.

The fastest flight from Klagenfurt to London Heathrow Airport takes 4h 40m

There are no direct flights from Klagenfurt to London Heathrow Airport. There are no popular flight routes from Klagenfurt to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Klagenfurt to London Heathrow Airport

How far is Klagenfurt to London Heathrow by plane?
The distance between Klagenfurt and London Heathrow is about 745.3 mi. Typically, this will take 4h 40m by plane in normal conditions.
When did momondo last update prices for flights from Klagenfurt Airport to London Heathrow Airport?
Prices for flights from Klagenfurt Airport to London Heathrow Airport were last updated today.
How old do you have to be to fly from Klagenfurt Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Klagenfurt Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why should I use momondo to find a flight deal from Klagenfurt to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Klagenfurt.

Can I find flights from Klagenfurt to London with flexible booking policies on momondo?

Flights from Klagenfurt to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Klagenfurt to London?

Once all potential Klagenfurt to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Klagenfurt to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Klagenfurt to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.