Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Klagenfurt from £113

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KLU
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Heathrow to Klagenfurt

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Klagenfurt (KLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Round-trip from

£177

One-way from

£113

Popular in

December

Cheapest in

January

Average price

£77
Austrian Airlines
  • Austrian Airlines
  • 4/10-7/10
  • 2 total stops
  • 31h 20m total
  • London to Klagenfurt
Search Deals
Eurowings
  • Eurowings
  • 29/8
  • 1 total stop
  • 6h 25m total
  • London to Klagenfurt
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Heathrow to Klagenfurt

Cheapest flights from Heathrow to Klagenfurt
Explore the most affordable flight options available from Heathrow to Klagenfurt. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Sat 4/1006:00LHR - KLU
1 stop7h 00mAustrian Airlines
Tue 7/1015:00KLU - LHR
1 stop24h 20mAustrian Airlines
Deal found 10/7£177
Sat 4/1009:05LHR - KLU
1 stop3h 55mMultiple Airlines
Tue 7/1015:00KLU - LHR
2 stops6h 45mMultiple Airlines
Deal found 10/7£198
Sat 4/1007:25LHR - KLU
2 stops5h 35mLufthansa
Tue 7/1015:00KLU - LHR
2 stops6h 45mLufthansa
Deal found 10/7£216

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Klagenfurt that are best for you.

Fly from

Heathrow

Fly to

Klagenfurt

Route

Depart

Return

Price

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 4/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Tue 7/10

15:00-14:20

1 stop24h 20m

£177

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 4/10

09:05-14:00

1 stop3h 55m

Klagenfurt

Tue 7/10

15:00-20:45

2 stops6h 45m

£198

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sat 4/10

07:25-14:00

2 stops5h 35m

Klagenfurt

Tue 7/10

15:00-20:45

2 stops6h 45m

£216

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Fri 29/8

08:50-16:15

1 stop6h 25m

£113

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Sun 12/10

19:20-23:25

1 stop27h 05m

£132

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Mon 13/10

06:00-23:25

1 stop16h 25m

£136

LondonKlagenfurt

LHR - KLU

LHRKLU

London Heathrow

Thu 28/8

06:55-14:00

2 stops6h 05m

£147

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Best time to book a flight from Heathrow to Klagenfurt

Have a flexible travel schedule? Discover the best time to fly to Klagenfurt from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Klagenfurt

Get insights into the airlines that provide service to Klagenfurt. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Klagenfurt. Reviews last updated 11 July 2025.
Read reviews from past customers who have flown with Austrian Airlines, Lufthansa, andEurowings from London Heathrow Airport to Klagenfurt. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
811 reviews
Check prices

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Comfort

7.3

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
811 reviews
Austrian Airlines
7.6
Good
811 reviews
Check prices

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Comfort

7.3

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Lufthansa
6.8
Okay
7,199 reviews
Austrian Airlines
7.6
Good
811 reviews
Check prices

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Comfort

7.3

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Eurowings
6.7
Okay
281 reviews
Austrian Airlines
7.6
Good
811 reviews
Check prices

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Comfort

7.3

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Klagenfurt. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Klagenfurt from London Heathrow?

    Klagenfurt (KLU) is the airport you will fly into if you book a flight from London Heathrow to Klagenfurt. You should not have trouble finding flights to Klagenfurt from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Klagenfurt airport from London Heathrow. It is only a 2.0 mi journey from Klagenfurt (KLU) to Klagenfurt’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Klagenfurt round-trip?

    Austrian Airlines, at £177, was found to be the cheapest airline from London Heathrow Airport to Klagenfurt. An alternate airline flying to your destination would be Lufthansa.

  • What are the cheapest airlines to fly from London Heathrow Airport to Klagenfurt one-way?

    £113 is the cheapest one-way deal found within the past few days, from Eurowings. You may also be able to find cheap deals on Austrian Airlines and Lufthansa, with prices starting from £136 and £147, respectively.

  • Can I find deals for flights from Heathrow to Klagenfurt that include hotel bookings?

    Yes. In addition to deals on Heathrow to Klagenfurt flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Klagenfurt?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Klagenfurt.

  • Can I find deals for business class flights from Heathrow to Klagenfurt?

    Yes. Cheapflights offers flight deals from Heathrow to Klagenfurt by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Klagenfurt

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Vienna flights
Stansted to Vienna flights
Gatwick to Vienna flights
London City to Vienna flights
Luton to Vienna flights
London City to Salzburg flights
Heathrow to Salzburg flights
Gatwick to Salzburg flights
Heathrow to Innsbruck flights
Luton to Salzburg flights
Stansted to Salzburg flights
Gatwick to Innsbruck flights
London City to Innsbruck flights
Stansted to Innsbruck flights
Southend to Vienna flights
Luton to Innsbruck flights
Southend to Salzburg flights
Heathrow to Linz flights
Heathrow to Graz flights
Stansted to Klagenfurt flights
Gatwick to Klagenfurt flights
Gatwick to Graz flights
Luton to Klagenfurt flights
London City to Klagenfurt flights
London City to Graz flights
London City to Linz flights
Stansted to Graz flights
Luton to Linz flights
Stansted to Linz flights
Luton to Graz flights
Gatwick to Linz flights
Southend to Innsbruck flights

Top airline flying from Heathrow to Klagenfurt

Discover the top airline that operate flights from Heathrow to Klagenfurt. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£154Average£251FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Klagenfurt?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Klagenfurt from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Klagenfurt?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Klagenfurt for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Klagenfurt with no change fees?

Need flexible booking options for your flight to Klagenfurt from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Klagenfurt become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Klagenfurt from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights