Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Klagenfurt to London from £85

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 17/9. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Klagenfurt to London (KLU-LHR)

Cheap return flights

Austrian Airlines Logo
14:50 - 18:40KLU-LHR
4h 50m1 stop
Austrian Airlines Logo
19:25 - 13:55LHR-KLU
17h 30m1 stop
£173Austrian Airlines
Find Deal
Sat, 8 Nov - Tue, 11 Nov
Austrian Airlines Logo
05:45 - 08:45KLU-LHR
4h 00m1 stop
Austrian Airlines Logo
06:00 - 23:25LHR-KLU
16h 25m1 stop
£174Austrian Airlines
Find Deal
Thu, 11 Sep - Sun, 14 Sep
Austrian Airlines Logo
15:00 - 21:40KLU-LHR
7h 40m1 stop
Austrian Airlines Logo
06:00 - 23:25LHR-KLU
16h 25m1 stop
£175Austrian Airlines
Find Deal
Thu, 11 Sep - Sun, 14 Sep
Austrian Airlines Logo
15:00 - 18:40KLU-LHR
4h 40m1 stop
Austrian Airlines Logo
09:05 - 23:25LHR-KLU
13h 20m1 stop
£177Austrian Airlines
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Austrian Airlines Logo
05:45 - 14:05KLU-LHR
9h 20m1 stop
Austrian Airlines Logo
06:00 - 13:55LHR-KLU
6h 55m1 stop
£178Austrian Airlines
Find Deal
Fri, 31 Oct - Thu, 6 Nov
Austrian Airlines Logo
15:15 - 18:40KLU-LHR
4h 25m1 stop
Austrian Airlines Logo
06:00 - 13:50LHR-KLU
6h 50m1 stop
£179Austrian Airlines
Find Deal
Thu, 22 Jan - Mon, 26 Jan
Logo
05:45 - 15:50KLU-LHR
11h 05m2 stops
Logo
14:50 - 23:25LHR-KLU
7h 35m1 stop
£192
Find Deal
Sat, 8 Nov - Wed, 12 Nov
Lufthansa Logo
15:00 - 22:40KLU-LHR
8h 40m2 stops
Lufthansa Logo
06:55 - 14:00LHR-KLU
6h 05m2 stops
£210Lufthansa
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Lufthansa Logo
15:00 - 22:40KLU-LHR
8h 40m2 stops
Lufthansa Logo
07:25 - 14:00LHR-KLU
5h 35m2 stops
£211Lufthansa
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Lufthansa Logo
05:45 - 13:00KLU-LHR
8h 15m2 stops
Lufthansa Logo
07:40 - 13:55LHR-KLU
5h 15m2 stops
£219Lufthansa
Find Deal
Sat, 15 Nov - Sun, 16 Nov

Austrian Airlines flights from Klagenfurt to London Heathrow Airport

Our best Austrian Airlines deals on Klagenfurt to London Heathrow Airport flight tickets
Austrian Airlines
8 Nov
KLU14:50Klagenfurt
4h 50m
1 stop
LHR18:40London Heathrow
11 Nov
LHR19:25London Heathrow
17h 30m
1 stop
KLU13:55Klagenfurt
£173
Find similar
Austrian Airlines
11 Sept
KLU05:45Klagenfurt
4h 00m
1 stop
LHR08:45London Heathrow
14 Sept
LHR06:00London Heathrow
16h 25m
1 stop
KLU23:25Klagenfurt
£174
Find similar
Austrian Airlines
11 Sept
KLU15:00Klagenfurt
7h 40m
1 stop
LHR21:40London Heathrow
14 Sept
LHR06:00London Heathrow
16h 25m
1 stop
KLU23:25Klagenfurt
£175
Find similar

Lufthansa flights from Klagenfurt to London Heathrow Airport

Our best Lufthansa deals on Klagenfurt to London Heathrow Airport flight tickets
Lufthansa
1 Oct
KLU15:00Klagenfurt
8h 40m
2 stops
LHR22:40London Heathrow
8 Oct
LHR06:55London Heathrow
6h 05m
2 stops
KLU14:00Klagenfurt
£210
Find similar
Lufthansa
1 Oct
KLU15:00Klagenfurt
8h 40m
2 stops
LHR22:40London Heathrow
8 Oct
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
£211
Find similar
Lufthansa
15 Nov
KLU05:45Klagenfurt
8h 15m
2 stops
LHR13:00London Heathrow
16 Nov
LHR07:40London Heathrow
5h 15m
2 stops
KLU13:55Klagenfurt
£219
Find similar

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 19 August 2025.
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

Sat 8/11

14:50-18:40

1 stop4h 50m

London Heathrow

Tue 11/11

19:25-13:55

1 stop17h 30m

£173

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 11/9

05:45-08:45

1 stop4h 00m

London Heathrow

Sun 14/9

06:00-23:25

1 stop16h 25m

£174

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 11/9

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 14/9

06:00-23:25

1 stop16h 25m

£175

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 1/10

15:00-18:40

1 stop4h 40m

London Heathrow

Wed 8/10

09:05-23:25

1 stop13h 20m

£177

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 31/10

05:45-14:05

1 stop9h 20m

London Heathrow

Thu 6/11

06:00-13:55

1 stop6h 55m

£178

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 22/1

15:15-18:40

1 stop4h 25m

London Heathrow

Mon 26/1

06:00-13:50

1 stop6h 50m

£179

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 8/11

05:45-15:50

2 stops11h 05m

London Heathrow

Wed 12/11

14:50-23:25

1 stop7h 35m

£192

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 1/10

15:00-22:40

2 stops8h 40m

London Heathrow

Wed 8/10

06:55-14:00

2 stops6h 05m

£210

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Wed 1/10

15:00-22:40

2 stops8h 40m

London Heathrow

Wed 8/10

07:25-14:00

2 stops5h 35m

£211

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sat 15/11

05:45-13:00

2 stops8h 15m

London Heathrow

Sun 16/11

07:40-13:55

2 stops5h 15m

£219

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Klagenfurt and London Heathrow Airport?

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

In general, January is the cheapest month to fly from Klagenfurt to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £154. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Klagenfurt averaging around £171.

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

£85

Fastest flight time

4h 00m

Direct flights

None
The best one-way flight to London Heathrow Airport from Klagenfurt in the past 72 hours is £85. The best return flight deal from Klagenfurt to London Heathrow Airport found on momondo in the last 72 hours is £173.
The fastest flight from Klagenfurt to London Heathrow Airport takes 4h 00m
There are no direct flights from Klagenfurt to London Heathrow Airport. Popular non-direct route for this connection is Klagenfurt Airport - 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 00m 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
Northampton
Maidstone
Slough
Gatwick
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Swanage
Colchester
Worthing
Dartford
Hounslow
Poole

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 24/8
Sun 31/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London