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Cheap flights from London Heathrow Airport to Klagenfurt from £83

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 21/4. 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 London Heathrow Airport to Klagenfurt

Cheap return flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
09:05 - 14:00
LHR
-
KLU
3h 55m
1 stop
Austrian Airlines Logo
15:00 - 18:40
KLU
-
LHR
4h 40m
1 stop
£173Austrian Airlines
Sat, 11 Apr - Sat, 18 Apr
Austrian Airlines Logo
09:05 - 14:00
LHR
-
KLU
3h 55m
1 stop
Austrian Airlines Logo
15:00 - 08:20
KLU
-
LHR
18h 20m
1 stop
£176Austrian Airlines
Wed, 15 Apr - Sat, 18 Apr
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
Austrian Airlines Logo
15:00 - 18:40
KLU
-
LHR
4h 40m
1 stop
£177Austrian Airlines
Mon, 4 May - Sat, 9 May
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
£178Austrian Airlines
Tue, 14 Apr - Tue, 21 Apr
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
Austrian Airlines Logo
15:00 - 18:40
KLU
-
LHR
4h 40m
1 stop
£178Austrian Airlines
Thu, 16 Apr - Thu, 23 Apr
Austrian Airlines Logo
06:00 - 10:30
LHR
-
KLU
3h 30m
1 stop
Austrian Airlines Logo
17:45 - 21:40
KLU
-
LHR
4h 55m
1 stop
£180Austrian Airlines
Fri, 17 Apr - Fri, 24 Apr
Austrian Airlines Logo
09:05 - 14:00
LHR
-
KLU
3h 55m
1 stop
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
£181Austrian Airlines
Tue, 5 May - Sat, 9 May
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
Austrian Airlines Logo
15:00 - 21:40
KLU
-
LHR
7h 40m
1 stop
£183Austrian Airlines
Fri, 5 Jun - Sat, 13 Jun
Austrian Airlines Logo
06:00 - 10:30
LHR
-
KLU
3h 30m
1 stop
Austrian Airlines Logo
15:00 - 18:40
KLU
-
LHR
4h 40m
1 stop
£184Austrian Airlines
Fri, 17 Apr - Sat, 18 Apr
Austrian Airlines Logo
06:00 - 14:00
LHR
-
KLU
7h 00m
1 stop
Austrian Airlines Logo
15:00 - 08:20
KLU
-
LHR
18h 20m
1 stop
£185Austrian Airlines
Thu, 14 May - Sun, 17 May

Lufthansa flights from London Heathrow Airport to Klagenfurt

Our best Lufthansa deals on London Heathrow Airport to Klagenfurt flight tickets
Lufthansa
13 Apr
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
20 Apr
KLU05:50Klagenfurt
13h 35m
2 stops
LHR18:25London Heathrow
£207
Lufthansa
14 Apr
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
21 Apr
KLU15:00Klagenfurt
6h 45m
2 stops
LHR20:45London Heathrow
£208
Lufthansa
15 May
LHR07:25London Heathrow
5h 35m
2 stops
KLU14:00Klagenfurt
18 May
KLU15:00Klagenfurt
6h 45m
2 stops
LHR20:45London Heathrow
£208

Austrian Airlines flights from London Heathrow Airport to Klagenfurt

Our best Austrian Airlines deals on London Heathrow Airport to Klagenfurt flight tickets
Austrian Airlines
11 Apr
LHR09:05London Heathrow
3h 55m
1 stop
KLU14:00Klagenfurt
18 Apr
KLU15:00Klagenfurt
4h 40m
1 stop
LHR18:40London Heathrow
£173
Austrian Airlines
8 Apr
LHR09:05London Heathrow
13h 15m
1 stop
KLU23:20Klagenfurt
11 Apr
KLU15:00Klagenfurt
18h 20m
1 stop
LHR08:20London Heathrow
£175
Austrian Airlines
15 Apr
LHR09:05London Heathrow
3h 55m
1 stop
KLU14:00Klagenfurt
18 Apr
KLU15:00Klagenfurt
18h 20m
1 stop
LHR08:20London Heathrow
£176

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 4 March 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

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 11/4

09:05-14:00

1 stop3h 55m

Klagenfurt

Sat 18/4

15:00-18:40

1 stop4h 40m

£173

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Wed 15/4

09:05-14:00

1 stop3h 55m

Klagenfurt

Sat 18/4

15:00-08:20

1 stop18h 20m

£176

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Mon 4/5

06:00-14:00

1 stop7h 00m

Klagenfurt

Sat 9/5

15:00-18:40

1 stop4h 40m

£177

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Tue 14/4

06:00-14:00

1 stop7h 00m

Klagenfurt

Tue 21/4

15:00-21:40

1 stop7h 40m

£178

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 16/4

06:00-14:00

1 stop7h 00m

Klagenfurt

Thu 23/4

15:00-18:40

1 stop4h 40m

£178

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Fri 17/4

06:00-10:30

1 stop3h 30m

Klagenfurt

Fri 24/4

17:45-21:40

1 stop4h 55m

£180

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Tue 5/5

09:05-14:00

1 stop3h 55m

Klagenfurt

Sat 9/5

15:00-21:40

1 stop7h 40m

£181

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Fri 5/6

06:00-14:00

1 stop7h 00m

Klagenfurt

Sat 13/6

15:00-21:40

1 stop7h 40m

£183

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Fri 17/4

06:00-10:30

1 stop3h 30m

Klagenfurt

Sat 18/4

15:00-18:40

1 stop4h 40m

£184

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 14/5

06:00-14:00

1 stop7h 00m

Klagenfurt

Sun 17/5

15:00-08:20

1 stop18h 20m

£185

Flights are sorted by cheapest return flights first.

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

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 £78. 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 Sunday because tickets tend to average around £111. 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 £114.

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 30m

Direct flights

None
The fastest flight from London Heathrow Airport to Klagenfurt takes 3h 30m
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 30m.

  • 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 £168Free CancellationRating
7.6
900 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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