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Cheap flights from London Heathrow Airport to Klagenfurt from £139

LHR — KLU
21 Nov — 28 Nov1
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

Wed 2/1206:00 -
1 stop3h 55m
Wed 9/1211:40 -
1 stop8h 00m
Deal found 19/10£184
Wed 18/1106:00 -
1 stop3h 55m
Wed 25/1111:40 -
1 stop21h 40m
Deal found 19/10£186
Tue 1/1206:00 -
1 stop3h 30m
Tue 15/1211:15 -
1 stop11h 25m
Deal found 18/10£187
Thu 3/1206:00 -
1 stop3h 55m
Thu 10/1211:40 -
1 stop21h 40m
Deal found 19/10£192
Wed 2/1206:00 -
1 stop3h 55m
Wed 9/1211:40 -
2 stops12h 15m
Deal found 19/10£201
Tue 1/1206:00 -
1 stop3h 30m
Tue 15/1211:15 -
2 stops12h 40m
Deal found 18/10£202
Thu 3/1206:00 -
1 stop3h 55m
Thu 10/1211:40 -
2 stops7h 50m
Deal found 19/10£207
Wed 4/1119:25 -
1 stop14h 30m
Sun 8/1111:15 -
1 stop22h 05m
Deal found 18/10£208
Wed 18/1106:00 -
1 stop3h 55m
Wed 25/1111:40 -
2 stops6h 25m
Deal found 19/10£214
Fri 30/1006:00 -
1 stop3h 30m
Mon 2/1111:40 -
1 stop11h 00m
Deal found 18/10£217

Find flight deals from Heathrow to Klagenfurt

Round-trip from

£184

One-way from

£139

Popular in

April

Cheapest in

January

Average price

£46
Austrian Airlines
  • Austrian Airlines
  • 2/12-9/12
  • 2 total stops
  • 11h 55m total
  • London to Klagenfurt
Search Deals
Austrian Airlines
  • Austrian Airlines
  • 6/1-31/12
  • 1 total stop
  • 3h 30m total
  • London to Klagenfurt
Search Deals
Highest demand for flights based on searches. 36% potential increase in price (£85 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 29% potential price decrease (£33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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.

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Wed 6/1

06:00-10:30

1 stop3h 30m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£139

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Wed 6/1

08:45-10:30

2 stops24h 45m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£163

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 26/12

14:50-10:30

1 stop18h 40m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£179

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Mon 19/4

06:00-14:00

1 stop7h 00m

Klagenfurt

Fri 23/4

05:50-16:40

2 stops11h 50m

£208

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Wed 4/11

19:25-10:55

1 stop14h 30m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£212

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Sat 7/11

19:25-10:30

1 stop14h 05m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£212

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Thu 5/11

06:00-10:55

1 stop3h 55m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£212

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Tue 10/11

19:25-10:55

1 stop14h 30m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£213

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Mon 9/11

19:30-10:30

2 stops14h 00m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£214

LondonKlagenfurt

LHR London Heathrow - KLU Klagenfurt

LHRKLU

London Heathrow

Tue 3/11

06:00-10:30

1 stop3h 30m

Klagenfurt

Wed 31/12

00:00-00:00

Nonstop0h 00m

£217

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 22 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
7.5
Good
984 reviews
Check prices

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Overall

7.5

Food

6.7

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
7.5
Good
984 reviews
Austrian Airlines
7.5
Good
984 reviews
Check prices

Comfort

7.3

Boarding

7.6

Entertainment

6.8

Overall

7.5

Food

6.7

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£167Average£291FlexibilityNo 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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