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Cheap flights from London Heathrow Airport to Klagenfurt from £136

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 1/3. 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 London Heathrow Airport to Klagenfurt

Cheap return flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
06:00 - 13:50LHR-KLU
6h 50m1 stop
Austrian Airlines Logo
15:15 - 18:40KLU-LHR
4h 25m1 stop
£169Austrian Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Austrian Airlines Logo
09:05 - 13:50LHR-KLU
3h 45m1 stop
Austrian Airlines Logo
15:15 - 18:40KLU-LHR
4h 25m1 stop
£175Austrian Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Austrian Airlines Logo
09:05 - 13:50LHR-KLU
3h 45m1 stop
Austrian Airlines Logo
15:15 - 08:20KLU-LHR
18h 05m1 stop
£175Austrian Airlines
Find Deal
Mon, 9 Feb - Fri, 13 Feb
Multiple Airlines Logo
07:40 - 13:50LHR-KLU
5h 10m2 stops
Multiple Airlines Logo
15:15 - 21:40KLU-LHR
7h 25m1 stop
£183Multiple Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
06:00 - 13:50LHR-KLU
6h 50m1 stop
Multiple Airlines Logo
15:15 - 22:55KLU-LHR
8h 40m2 stops
£189Multiple Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
20:15 - 13:50LHR-KLU
16h 35m2 stops
Multiple Airlines Logo
15:15 - 21:40KLU-LHR
7h 25m1 stop
£197Multiple Airlines
Find Deal
Sat, 10 Jan - Mon, 12 Jan
Lufthansa Logo
06:35 - 13:50LHR-KLU
6h 15m2 stops
Lufthansa Logo
15:15 - 22:55KLU-LHR
8h 40m2 stops
£203Lufthansa
Find Deal
Mon, 9 Feb - Fri, 13 Feb
Lufthansa Logo
07:40 - 13:50LHR-KLU
5h 10m2 stops
Lufthansa Logo
15:15 - 22:55KLU-LHR
8h 40m2 stops
£204Lufthansa
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Lufthansa Logo
20:15 - 13:50LHR-KLU
16h 35m2 stops
Lufthansa Logo
15:15 - 21:00KLU-LHR
6h 45m2 stops
£211Lufthansa
Find Deal
Sat, 10 Jan - Mon, 12 Jan
Austrian Airlines Logo
09:05 - 13:50LHR-KLU
3h 45m1 stop
Austrian Airlines Logo
15:15 - 18:40KLU-LHR
4h 25m1 stop
£228Austrian Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan

Austrian Airlines flights from London Heathrow Airport to Klagenfurt

Our best Austrian Airlines deals on London Heathrow Airport to Klagenfurt flight tickets
Austrian Airlines
15 Jan
LHR06:00London Heathrow
6h 50m
1 stop
KLU13:50Klagenfurt
22 Jan
KLU15:15Klagenfurt
4h 25m
1 stop
LHR18:40London Heathrow
£169
Find similar
Austrian Airlines
15 Jan
LHR09:05London Heathrow
3h 45m
1 stop
KLU13:50Klagenfurt
22 Jan
KLU15:15Klagenfurt
4h 25m
1 stop
LHR18:40London Heathrow
£175
Find similar
Austrian Airlines
9 Feb
LHR09:05London Heathrow
3h 45m
1 stop
KLU13:50Klagenfurt
13 Feb
KLU15:15Klagenfurt
18h 05m
1 stop
LHR08:20London Heathrow
£175
Find similar

Lufthansa flights from London Heathrow Airport to Klagenfurt

Our best Lufthansa deals on London Heathrow Airport to Klagenfurt flight tickets
Lufthansa
9 Feb
LHR06:35London Heathrow
6h 15m
2 stops
KLU13:50Klagenfurt
13 Feb
KLU15:15Klagenfurt
8h 40m
2 stops
LHR22:55London Heathrow
£203
Find similar
Lufthansa
15 Jan
LHR07:40London Heathrow
5h 10m
2 stops
KLU13:50Klagenfurt
22 Jan
KLU15:15Klagenfurt
8h 40m
2 stops
LHR22:55London Heathrow
£204
Find similar
Lufthansa
10 Jan
LHR20:15London Heathrow
16h 35m
2 stops
KLU13:50Klagenfurt
12 Jan
KLU15:15Klagenfurt
6h 45m
2 stops
LHR21:00London Heathrow
£211
Find similar

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 2 December 2025.
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

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

06:00-13:50

1 stop6h 50m

Klagenfurt

Thu 22/1

15:15-18:40

1 stop4h 25m

£169

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

09:05-13:50

1 stop3h 45m

Klagenfurt

Thu 22/1

15:15-18:40

1 stop4h 25m

£175

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Mon 9/2

09:05-13:50

1 stop3h 45m

Klagenfurt

Fri 13/2

15:15-08:20

1 stop18h 05m

£175

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

07:40-13:50

2 stops5h 10m

Klagenfurt

Thu 22/1

15:15-21:40

1 stop7h 25m

£183

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

06:00-13:50

1 stop6h 50m

Klagenfurt

Thu 22/1

15:15-22:55

2 stops8h 40m

£189

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 10/1

20:15-13:50

2 stops16h 35m

Klagenfurt

Mon 12/1

15:15-21:40

1 stop7h 25m

£197

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Mon 9/2

06:35-13:50

2 stops6h 15m

Klagenfurt

Fri 13/2

15:15-22:55

2 stops8h 40m

£203

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

07:40-13:50

2 stops5h 10m

Klagenfurt

Thu 22/1

15:15-22:55

2 stops8h 40m

£204

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 10/1

20:15-13:50

2 stops16h 35m

Klagenfurt

Mon 12/1

15:15-21:00

2 stops6h 45m

£211

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 15/1

09:05-13:50

1 stop3h 45m

Klagenfurt

Thu 22/1

15:15-18:40

1 stop4h 25m

£228

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £83. 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 Saturday because tickets tend to average around £136. 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 evening. Our users have found flights to Klagenfurt in the evening for as low as £51. In contrast, the most expensive time of day to depart to Klagenfurt is in the morning when prices are around £103.

Can stopping save me money on London Heathrow Airport to Klagenfurt flights?

You could potentially save up to 48% on your flight if you consider stops on a London Heathrow Airport to Klagenfurt flight.

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 45m

Direct flights

None
The fastest flight from London Heathrow Airport to Klagenfurt takes 3h 45m
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

  • 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 45m.

  • 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 £158Free CancellationRating
7.6
875 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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