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Cheap flights from London Heathrow Airport to Klagenfurt from £113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Klagenfurt departing on 31/8. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Klagenfurt

Cheap return flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
15:00 - 21:40KLU  Klagenfurt-LHR London Heathrow
7h 40m1 stop Vienna Intl
£182Austrian Airlines
Sat, 19 Sep - Sat, 26 Sep
Austrian Airlines Logo
06:00 - 10:55LHR  London Heathrow-KLU Klagenfurt
3h 55m1 stop Vienna Intl
Austrian Airlines Logo
11:15 - 21:40KLU  Klagenfurt-LHR London Heathrow
11h 25m1 stop Vienna Intl
£185Austrian Airlines
Thu, 3 Dec - Tue, 8 Dec
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
14:50 - 21:40KLU  Klagenfurt-LHR London Heathrow
7h 50m1 stop Vienna Intl
£185Austrian Airlines
Thu, 3 Dec - Tue, 8 Dec
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
05:50 - 21:40KLU  Klagenfurt-LHR London Heathrow
16h 50m1 stop Vienna Intl
£185Austrian Airlines
Sat, 3 Oct - Mon, 5 Oct
Austrian Airlines Logo
06:00 - 10:55LHR  London Heathrow-KLU Klagenfurt
3h 55m1 stop Vienna Intl
Austrian Airlines Logo
11:15 - 21:40KLU  Klagenfurt-LHR London Heathrow
11h 25m1 stop Vienna Intl
£186Austrian Airlines
Thu, 3 Dec - Tue, 8 Dec
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
15:00 - 08:20KLU  Klagenfurt-LHR London Heathrow
18h 20m1 stop Vienna Intl
£186Austrian Airlines
Thu, 8 Oct - Sun, 11 Oct
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
15:00 - 08:20KLU  Klagenfurt-LHR London Heathrow
18h 20m1 stop Vienna Intl
£186Austrian Airlines
Tue, 8 Sep - Tue, 15 Sep
Austrian Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Austrian Airlines Logo
15:00 - 21:40KLU  Klagenfurt-LHR London Heathrow
7h 40m1 stop Vienna Intl
£189Austrian Airlines
Sun, 20 Sep - Sat, 26 Sep
Multiple Airlines Logo
06:00 - 10:55LHR  London Heathrow-KLU Klagenfurt
3h 55m1 stop Vienna Intl
Multiple Airlines Logo
11:15 - 17:05KLU  Klagenfurt-LHR London Heathrow
6h 50m2 stops Vienna Intl Munich Franz Josef Strauss
£198Multiple Airlines
Thu, 3 Dec - Tue, 8 Dec
Multiple Airlines Logo
06:00 - 14:00LHR  London Heathrow-KLU Klagenfurt
7h 00m1 stop Vienna Intl
Multiple Airlines Logo
14:50 - 22:55KLU  Klagenfurt-LHR London Heathrow
9h 05m2 stops Vienna Intl Munich Franz Josef Strauss
£199Multiple Airlines
Thu, 3 Dec - Tue, 8 Dec

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Austrian Airlines flights from London Heathrow Airport to Klagenfurt

Our best Austrian Airlines deals on London Heathrow Airport to Klagenfurt flight tickets
Austrian Airlines
19 Sept
LHR06:00London Heathrow
7h 00m
1 stop
KLU14:00Klagenfurt
26 Sept
KLU15:00Klagenfurt
7h 40m
1 stop
LHR21:40London Heathrow
£182
Austrian Airlines
3 Dec
LHR06:00London Heathrow
7h 00m
1 stop
KLU14:00Klagenfurt
8 Dec
KLU14:50Klagenfurt
7h 50m
1 stop
LHR21:40London Heathrow
£185
Austrian Airlines
3 Dec
LHR06:00London Heathrow
3h 55m
1 stop
KLU10:55Klagenfurt
8 Dec
KLU11:15Klagenfurt
11h 25m
1 stop
LHR21:40London Heathrow
£186

Lufthansa flights from London Heathrow Airport to Klagenfurt

Our best Lufthansa deals on London Heathrow Airport to Klagenfurt flight tickets
Lufthansa
2 Sept
LHR06:55London Heathrow
6h 05m
2 stops
KLU14:00Klagenfurt
9 Sept
KLU15:00Klagenfurt
28h 25m
2 stops
LHR18:25London Heathrow
£213
Lufthansa
1 Sept
LHR06:55London Heathrow
6h 05m
2 stops
KLU14:00Klagenfurt
8 Sept
KLU15:00Klagenfurt
26h 40m
2 stops
LHR16:40London Heathrow
£217
Lufthansa
2 Sept
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
6 Sept
KLU14:05Klagenfurt
29h 35m
2 stops
LHR18:40London Heathrow
£218

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Klagenfurt 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 8 August 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 19/9

06:00-14:00

1 stop7h 00m

Klagenfurt

Sat 26/9

15:00-21:40

1 stop7h 40m

£182

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 3/12

06:00-10:55

1 stop3h 55m

Klagenfurt

Tue 8/12

11:15-21:40

1 stop11h 25m

£185

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 3/12

06:00-14:00

1 stop7h 00m

Klagenfurt

Tue 8/12

14:50-21:40

1 stop7h 50m

£185

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 3/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Mon 5/10

05:50-21:40

1 stop16h 50m

£185

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 3/12

06:00-10:55

1 stop3h 55m

Klagenfurt

Tue 8/12

11:15-21:40

1 stop11h 25m

£186

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 8/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Sun 11/10

15:00-08:20

1 stop18h 20m

£186

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Tue 8/9

06:00-14:00

1 stop7h 00m

Klagenfurt

Tue 15/9

15:00-08:20

1 stop18h 20m

£186

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sun 20/9

06:00-14:00

1 stop7h 00m

Klagenfurt

Sat 26/9

15:00-21:40

1 stop7h 40m

£189
Fastest return journey

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 3/12

06:00-10:55

1 stop3h 55m

Klagenfurt

Tue 8/12

11:15-17:05

2 stops6h 50m

£198

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 3/12

06:00-14:00

1 stop7h 00m

Klagenfurt

Tue 8/12

14:50-22:55

2 stops9h 05m

£199

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 Klagenfurt from

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

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 day to depart on your flight to Klagenfurt?

According to our data, Thursday is the cheapest day to fly to Klagenfurt from London Heathrow Airport. The lowest ticket price found for a Thursday departure recently was £47. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around £115. These prices are subject to change though, so be sure to set up a Price Alert for flights to Klagenfurt.

What is the cheapest time of day to depart on your flight to Klagenfurt?

Our data shows that the cheapest London Heathrow Airport to Klagenfurt flights are usually those with departure times in the afternoon. Our users have found flights to Klagenfurt in the afternoon for as low as £47. In contrast, the most expensive time of day to depart to Klagenfurt is in the morning when prices are around £113.

When to book flights from London Heathrow Airport to Klagenfurt

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

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

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

Fastest flight time

3h 55m

Direct flights

None
The fastest flight from London Heathrow Airport to Klagenfurt takes 3h 55m
There are no direct flights from London Heathrow Airport to Klagenfurt. There are no popular flight routes from London Heathrow Airport to Klagenfurt.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Klagenfurt

  • How far is London Heathrow to Klagenfurt by plane?

    The distance between London Heathrow and Klagenfurt is about 745.3 mi. By plane, this route typically takes 3h 55m.

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

    Prices for flights from London Heathrow Airport to Klagenfurt Airport refresh daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Klagenfurt Airport?

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

  • What documentation or ID do you need to fly to Klagenfurt Airport?

    The required travel and health documents for your Klagenfurt Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Klagenfurt Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Klagenfurt?

Best airlines flying from London Heathrow Airport to Klagenfurt

Compare and see reviews for airlines that fly from London Heathrow Airport to Klagenfurt with momondo
Airline
Rating
Free Cancellation
Price
Austrian AirlinesPriceFrom £166Free CancellationRating
7.6
951 reviews
Search Austrian Airlines flights

Why use momondo?

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

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 Klagenfurt from London.

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

Yes. All flights to Klagenfurt from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Klagenfurt from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Klagenfurt from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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