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Cheap flights from Klagenfurt to London from £92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Klagenfurt to London departing on 15/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Klagenfurt to London

Cheap return flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
05:50 - 21:40
KLU
-
LHR
16h 50m
1 stop
Austrian Airlines Logo
06:00 - 10:30
LHR
-
KLU
3h 30m
1 stop
£173Austrian Airlines
Fri, 20 Mar - Sun, 22 Mar
Austrian Airlines Logo
15:15 - 08:20
KLU
-
LHR
18h 05m
1 stop
Austrian Airlines Logo
06:00 - 13:50
LHR
-
KLU
6h 50m
1 stop
£175Austrian Airlines
Thu, 12 Mar - Wed, 18 Mar
Austrian Airlines Logo
15:15 - 18:40
KLU
-
LHR
4h 25m
1 stop
Austrian Airlines Logo
06:00 - 13:50
LHR
-
KLU
6h 50m
1 stop
£175Austrian Airlines
Thu, 19 Mar - Sat, 21 Mar
Austrian Airlines Logo
15:00 - 08:20
KLU
-
LHR
18h 20m
1 stop
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
£176Austrian Airlines
Tue, 7 Apr - Sat, 11 Apr
Austrian Airlines Logo
05:50 - 18:40
KLU
-
LHR
13h 50m
1 stop
Austrian Airlines Logo
06:00 - 10:30
LHR
-
KLU
3h 30m
1 stop
£177Austrian Airlines
Fri, 20 Mar - Sun, 22 Mar
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
£177Austrian Airlines
Sat, 6 Jun - Tue, 9 Jun
Austrian Airlines Logo
15:15 - 21:40
KLU
-
LHR
7h 25m
1 stop
Austrian Airlines Logo
06:00 - 13:50
LHR
-
KLU
6h 50m
1 stop
£183Austrian Airlines
Mon, 9 Mar - Mon, 16 Mar
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
£184Austrian Airlines
Fri, 3 Apr - Fri, 10 Apr
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
£185Austrian Airlines
Wed, 1 Apr - Sun, 5 Apr
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
£187Austrian Airlines
Wed, 27 May - Sun, 31 May

Austrian Airlines flights from Klagenfurt to London Heathrow Airport

Our best Austrian Airlines deals on Klagenfurt to London Heathrow Airport flight tickets
Austrian Airlines
20 Mar
KLU05:50Klagenfurt
16h 50m
1 stop
LHR21:40London Heathrow
22 Mar
LHR06:00London Heathrow
3h 30m
1 stop
KLU10:30Klagenfurt
£173
Austrian Airlines
12 Mar
KLU15:15Klagenfurt
18h 05m
1 stop
LHR08:20London Heathrow
18 Mar
LHR06:00London Heathrow
6h 50m
1 stop
KLU13:50Klagenfurt
£174
Austrian Airlines
19 Mar
KLU15:15Klagenfurt
4h 25m
1 stop
LHR18:40London Heathrow
22 Mar
LHR06:00London Heathrow
3h 30m
1 stop
KLU10:30Klagenfurt
£175

Lufthansa flights from Klagenfurt to London Heathrow Airport

Our best Lufthansa deals on Klagenfurt to London Heathrow Airport flight tickets
Lufthansa
12 Mar
KLU15:15Klagenfurt
8h 40m
2 stops
LHR22:55London Heathrow
19 Mar
LHR07:40London Heathrow
5h 10m
2 stops
KLU13:50Klagenfurt
£205
Lufthansa
12 Mar
KLU15:15Klagenfurt
8h 40m
2 stops
LHR22:55London Heathrow
19 Mar
LHR07:40London Heathrow
5h 10m
2 stops
KLU13:50Klagenfurt
£206
Lufthansa
31 Mar
KLU15:00Klagenfurt
6h 45m
2 stops
LHR20:45London Heathrow
7 Apr
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
£207

momondo Fare Finder

 
Customise your flight search to find flights from Klagenfurt to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 17 February 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

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 20/3

05:50-21:40

1 stop16h 50m

London Heathrow

Sun 22/3

06:00-10:30

1 stop3h 30m

£173

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 12/3

15:15-08:20

1 stop18h 05m

London Heathrow

Wed 18/3

06:00-13:50

1 stop6h 50m

£174

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 19/3

15:15-18:40

1 stop4h 25m

London Heathrow

Sat 21/3

06:00-13:50

1 stop6h 50m

£175

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Tue 7/4

15:00-08:20

1 stop18h 20m

London Heathrow

Sat 11/4

06:00-14:00

1 stop7h 00m

£176

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 20/3

05:50-18:40

1 stop13h 50m

London Heathrow

Sun 22/3

06:00-10:30

1 stop3h 30m

£177

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 6/6

15:00-21:40

1 stop7h 40m

London Heathrow

Tue 9/6

06:00-14:00

1 stop7h 00m

£177

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 9/3

15:15-21:40

1 stop7h 25m

London Heathrow

Mon 16/3

06:00-13:50

1 stop6h 50m

£183

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 3/4

15:00-21:40

1 stop7h 40m

London Heathrow

Fri 10/4

06:00-14:00

1 stop7h 00m

£184

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 1/4

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 5/4

06:00-14:00

1 stop7h 00m

£185

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 27/5

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 31/5

06:00-14:00

1 stop7h 00m

£187

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

Fastest flight time

4h 25m

Direct flights

None
The fastest flight from Klagenfurt to London Heathrow Airport takes 4h 25m
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

  • 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 25m 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Slough
Maidstone
Northampton
Stratford-upon-Avon
Swindon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Guildford
Poole
Chelmsford
Hayes
Wembley
Dover
Folkestone

Why use momondo?

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.

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