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Cheap flights from Klagenfurt to London Heathrow Airport from £128

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 23/5. Fares are subject to change and may not be available on all flights or dates of travel.
KLU — LHR
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Klagenfurt to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Klagenfurt (KLU) to Heathrow (LHR). 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 21 February 2025.

Round-trip from

£166

One-way from

£128

Popular in

May

Cheapest in

January

Average price

£196
Austrian Airlines
  • Austrian Airlines
  • 3/4-6/4
  • 2 total stops
  • 25h 10m total
  • Klagenfurt to London
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Eurowings
  • Eurowings
  • 23/5
  • 1 total stop
  • 16h 15m total
  • Klagenfurt to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Klagenfurt to Heathrow

Cheapest flights from Klagenfurt to Heathrow
Explore the most affordable flight options available from Klagenfurt to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Thu 3/415:00KLU - LHR
1 stop7h 40mAustrian Airlines
Sun 6/419:30LHR - KLU
1 stop17h 30mAustrian Airlines
Deal found 20/2£166
Thu 3/415:00KLU - LHR
2 stops8h 40mMultiple Airlines
Sun 6/419:30LHR - KLU
1 stop17h 30mMultiple Airlines
Deal found 20/2£186
Sun 6/415:00KLU - LHR
2 stops6h 45mLufthansa
Thu 10/409:00LHR - KLU
2 stops13h 25mLufthansa
Deal found 20/2£205

Find flights from Klagenfurt to Heathrow within your budget

Customise your flight search to find flights from Klagenfurt to Heathrow 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 21 February 2025.

Fly from

Klagenfurt

Fly to

Heathrow

Route

Depart

Return

Price

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 3/4

15:00-21:40

1 stop7h 40m

London Heathrow

Sun 6/4

19:30-14:00

1 stop17h 30m

£166

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Thu 3/4

15:00-22:40

2 stops8h 40m

London Heathrow

Sun 6/4

19:30-14:00

1 stop17h 30m

£186

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sun 6/4

15:00-20:45

2 stops6h 45m

London Heathrow

Thu 10/4

09:00-23:25

2 stops13h 25m

£205

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 23/5

16:55-08:10

1 stop16h 15m

£128

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Sun 13/4

21:10-12:20

2 stops16h 10m

£149

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Mon 10/3

14:50-18:40

1 stop4h 50m

£184

KlagenfurtLondon

KLU - LHR

KLULHR

Klagenfurt

Fri 23/5

15:00-08:15

2 stops18h 15m

£227

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Klagenfurt to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Klagenfurt 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.

Travel insights for flights from Klagenfurt to Heathrow

Get recent, data-driven insights about flights from Klagenfurt to Heathrow including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Klagenfurt to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £112). Flying from Klagenfurt to London Heathrow Airport in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 21 February 2025.
See what other customers who have flown with Austrian Airlines, Eurowings and Lufthansa from Klagenfurt to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
773 reviews
Check prices

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Austrian Airlines
7.6
Good
773 reviews
Austrian Airlines
7.6
Good
773 reviews
Check prices

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Eurowings
6.7
Okay
281 reviews
Austrian Airlines
7.6
Good
773 reviews
Check prices

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Lufthansa
6.7
Okay
6,986 reviews
Austrian Airlines
7.6
Good
773 reviews
Check prices

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

SOF - VIE

There were a couple of mishaps, but even with them their commitment to great service is noticed. The flight to US was delayd, but they provided a small voucher for food. Then the luggage didn't arrive because was rescheduled for the flight next day . Still, it was delivered 200 miles away within hours of the landing of the flight. I give them the highest evaluation because of their desire to make it right. BTW, the food was quite economical for a long haul flight - just a sandwich.

Related info for your journey

Find useful and relevant information for your journey from Klagenfurt to Heathrow. 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 from for flights from Klagenfurt to London Heathrow?

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

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

    Austrian Airlines, at £166, was found to be the cheapest airline from Klagenfurt to London Heathrow Airport. An alternate airline flying to your destination would be Lufthansa. These flights start at 31% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Eurowings, which is currently one of the cheapest options available, starting at £128. Austrian Airlines flights start at £184 while deals on Lufthansa start at £227 one-way.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Klagenfurt to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Klagenfurt to London Heathrow Airport (average of £112). Flying from Klagenfurt to London Heathrow Airport in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Croydon
Gatwick
Slough
Luton
Ilford
Hayes
Eastbourne
Swindon
Northampton
Wembley
Southend-on-Sea
Ipswich
Winchester
Maidstone
Crawley
Southall
Watford

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Alternative routes for Klagenfurt to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Can Cheapflights notify me if prices for flights from Klagenfurt to Heathrow become cheaper?

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

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