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Cheap flights from London Heathrow Airport to Klagenfurt from £112

LHR — KLU
4 Oct — 11 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Klagenfurt

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Klagenfurt

Sat 10/1006:00 -
1 stop7h 00m
Sat 17/1015:00 -
1 stop7h 40m
Deal found 4/9£181
Mon 5/1006:00 -
1 stop6h 55m
Sat 17/1015:00 -
1 stop7h 40m
Deal found 2/9£183
Wed 4/1106:00 -
1 stop3h 55m
Tue 10/1111:15 -
1 stop8h 25m
Deal found 30/8£184
Wed 30/906:00 -
1 stop7h 00m
Wed 7/1015:00 -
1 stop7h 40m
Deal found 31/8£186
Wed 4/1106:35 -
2 stops27h 20m
Tue 10/1111:15 -
1 stop11h 25m
Deal found 30/8£197
Sat 10/1007:25 -
2 stops5h 35m
Sat 17/1015:00 -
1 stop18h 20m
Deal found 4/9£198
Mon 5/1006:00 -
1 stop6h 55m
Sat 17/1005:50 -
2 stops12h 15m
Deal found 2/9£200

Find flight deals from Heathrow to Klagenfurt

Round-trip from

£181

One-way from

£112

Popular in

April

Cheapest in

October

Average price

£376
Austrian Airlines
  • Austrian Airlines
  • 10/10-17/10
  • 2 total stops
  • 14h 40m total
  • London to Klagenfurt
Search Deals
20/10-31/12
  • 20/10-31/12
  • 2 total stops
  • 19h 30m total
  • London to Klagenfurt
Search Deals
Highest demand for flights based on searches. 30% potential increase in price (£67 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 23% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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

Sun 18/10

06:00-23:20

1 stop16h 20m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£143

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Fri 16/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£143

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Tue 13/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£143

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Wed 14/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£149

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 15/10

06:00-14:00

1 stop7h 00m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£152

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Fri 16/10

07:25-14:00

2 stops5h 35m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£157
Fastest return journey

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 10/10

09:05-14:00

1 stop3h 55m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£164

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sun 4/10

06:00-23:20

1 stop16h 20m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£172

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 3/10

09:05-14:00

1 stop3h 55m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£172

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 15/10

18:05-07:50

2 stops12h 45m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£175

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 21 resultsSorted by cheapest first
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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

Reviews of airlines servicing Klagenfurt

Read reviews from past customers who have flown with Austrian Airlines 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
951 reviews
Check prices

Boarding

7.6

Overall

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edward,Jul 2026

YUL - VIE

I was upgraded to business class due to my bid because accepted. EXTREMELY polite and friendly service. Decent seats and good food. Highly recommend it. If you can arrange to travel on a day when not very many business people are traveling (e.g., Wednesday) then you can possibly get an excellent seat at a great price.
Austrian Airlines
7.6
Good
951 reviews
Austrian Airlines
7.6
Good
951 reviews
Check prices

Boarding

7.6

Overall

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edward,Jul 2026

YUL - VIE

I was upgraded to business class due to my bid because accepted. EXTREMELY polite and friendly service. Decent seats and good food. Highly recommend it. If you can arrange to travel on a day when not very many business people are traveling (e.g., Wednesday) then you can possibly get an excellent seat at a great price.

Related info for your journey

  • 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.

  • How long is the flight from London Heathrow Airport to Klagenfurt?

    Airlines like Austrian Airlines fly from London Heathrow Airport to Klagenfurt in about 3h 55m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 745 mi.

  • 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

Top airline flying from Heathrow to Klagenfurt

AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£166Average£288FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

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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.

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