LON - KLU

£25 Find Cheap Flights from London to Klagenfurt

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Klagenfurt departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Klagenfurt

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Klagenfurt, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Klagenfurt, as well as popular online travel agencies
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Flight Deals

Cheap Flights from London to Klagenfurt (LON-KLU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Klagenfurt that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Klagenfurt

Thu, 9 Oct - Sun, 12 Oct
Ryanair Logo
18:55 - 22:00STN-KLU
2h 05mdirect
Ryanair Logo
20:30 - 21:35KLU-STN
2h 05mdirect
£30Ryanair
Find Deal
Thu, 9 Oct - Sun, 12 Oct
Ryanair Logo
18:55 - 22:00STN-KLU
2h 05mdirect
Ryanair Logo
20:30 - 21:35KLU-STN
2h 05mdirect
£31Ryanair
Find Deal
Thu, 9 Oct - Thu, 16 Oct
Ryanair Logo
18:55 - 22:00STN-KLU
2h 05mdirect
Ryanair Logo
22:25 - 23:30KLU-STN
2h 05mdirect
£32Ryanair
Find Deal
Sun, 19 Oct - Thu, 23 Oct
Ryanair Logo
16:50 - 19:55STN-KLU
2h 05mdirect
Ryanair Logo
22:25 - 23:30KLU-STN
2h 05mdirect
£69Ryanair
Find Deal
Thu, 9 Oct - Thu, 16 Oct
 Logo
18:55 - 22:00STN-KLU
2h 05mdirect
 Logo
14:55 - 07:15KLU-STN
17h 20m2 stops
Thu, 9 Oct - Sun, 12 Oct
 Logo
18:55 - 22:00STN-KLU
2h 05mdirect
 Logo
19:15 - 12:10KLU-STN
17h 55m2 stops
Tue, 6 Jan - Fri, 9 Jan
Austrian Airlines Logo
09:05 - 13:50LHR-KLU
3h 45m1 stop
Austrian Airlines Logo
15:15 - 21:40KLU-LHR
7h 25m1 stop
£169Austrian Airlines
Find Deal
Tue, 28 Oct - Tue, 4 Nov
Austrian Airlines Logo
06:00 - 13:55LHR-KLU
6h 55m1 stop
Austrian Airlines Logo
05:45 - 14:05KLU-LHR
9h 20m1 stop
£170Austrian Airlines
Find Deal
Tue, 6 Jan - Fri, 9 Jan
Lufthansa Logo
06:35 - 13:50LHR-KLU
6h 15m2 stops
Lufthansa Logo
15:15 - 21:00KLU-LHR
6h 45m2 stops
£203Lufthansa
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Lufthansa Logo
06:35 - 13:55LHR-KLU
6h 20m2 stops
Lufthansa Logo
14:50 - 22:55KLU-LHR
9h 05m2 stops
£204Lufthansa
Find Deal

Everything you should know

Top airlines
Ryanair
Cheapest • from £30 (return)
Austrian Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
STN-KLU
Cheapest
STN-KLU
Most popular
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 75% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Direct flights
4 days a week
There are direct flights from London to Klagenfurt 4 days a week: Mon, Thu, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest return fare
£30
Overall average: £69
Ryanair
Thu 9/10Sun 12/10
STN - KLU • Direct
Cheapest one-way flight
£25
Ryanair
Thu 9/10
STN - KLU • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Klagenfurt!
Booking Insights

KAYAK's insights & trends for London to Klagenfurt flights

Get data-powered insights and trends into flights from London to Klagenfurt to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Klagenfurt?

What is the cheapest London to Klagenfurt flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Klagenfurt costs £32 on the route between London Stansted Airport (STN) and Klagenfurt (KLU). It is also the most popular route.

What is the cheapest month to fly from London to Klagenfurt?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Klagenfurt, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Klagenfurt is January, where tickets cost £36 (return) on average. On the other hand, the most expensive months are September and August, where the average cost of round-trip tickets is £221 and £215 respectively.

Can I save money by flying with a stopover from London to Klagenfurt?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £103, prices are generally cheapest when you fly direct.

Good to know - Cheap tickets from London to Klagenfurt

Low seasonNovember
Cheapest flight£25
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 45% lower on average.
Flight from London Stansted Airport to Klagenfurt

When to book flights from London to Klagenfurt

Are your dates flexible? Find out the best times to travel from London to Klagenfurt based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Klagenfurt

  • What is the cheapest flight from London to Klagenfurt?

    In the last 3 days, the lowest price for a flight from London to Klagenfurt was £34 for a one-way ticket and £41 for a return.

  • Which airports will I be using when flying from London to Klagenfurt?

    On your way to Klagenfurt, you’ll fly out from one of these London airports: London City, London Gatwick, London Luton, or London Stansted. You’ll be landing at Klagenfurt.

  • Which aircraft models fly most regularly from London to Klagenfurt?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the London to Klagenfurt flight route.

  • On which days can I fly direct from London to Klagenfurt?

    You can catch a direct flight from London to Klagenfurt on on Thursday, and Sunday.

  • Which is the best airline for flights from London to Klagenfurt, Austrian Airlines or Ryanair?

    The two airlines most popular with KAYAK users for flights from London to Klagenfurt are Austrian Airlines and Ryanair. With an average price for the route of £254 and an overall rating of 7.6, Austrian Airlines is the most popular choice. Ryanair is also a great choice for the route, with an average price of £88 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from London to Klagenfurt?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Klagenfurt.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Klagenfurt?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Klagenfurt from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Klagenfurt?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Klagenfurt with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Klagenfurt?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Klagenfurt from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to Klagenfurt

  • Looking for a cheap flight from Klagenfurt to London? 25% of our users found flights on this route for £63 or less round-trip.

Prefer to fly direct from London to Klagenfurt?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Klagenfurt.
Find which airlines fly direct from London to Klagenfurt Airport, which days they fly and book direct flights.

Direct departures

London to Klagenfurt

Monday

Ryanair

Ryanair

Thursday

Ryanair

Ryanair

Saturday

Ryanair

Ryanair

Sunday

Ryanair

Ryanair

See more direct flights

Direct returns

Klagenfurt to London

Monday

Ryanair

Ryanair

Thursday

Ryanair

Ryanair

Saturday

Ryanair

Ryanair

Sunday

Ryanair

Ryanair

See more direct flights

Reviews of the top airlines flying from London to Klagenfurt

 
See real verified KAYAK customer reviews for airlines flying from London to Klagenfurt. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Klagenfurt? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Austrian AirlinesOverall score based on 850 reviews
6.8Food
7.3Comfort
8.1Crew
6.8Entertainment
7.6Boarding
Airline reviews

They had me unpack a handbag 2 lbs overweight into another handbag 8 lbs underweight for a Bible.

2.0 MediocreAnonymous, Sept 2025VIE - EWR
Read more Austrian Airlines reviews

They had me unpack a handbag 2 lbs overweight into another handbag 8 lbs underweight for a Bible.

My flight was canceled and even though I paid אם KAYAK you didn't even answer me and obviously didn't refund my money. I will never buy a ticket through you again.

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices.

Despite the booked seats in front of the land we were moved to the back of the plane even first like 8 lines were totally without pasangers. When I tried to sit on empty seat flight attendant asked me to go to my dedicated seat in the fully crowded back of the plane. She was not able to explain why. Food was very poor on flight LAX - VIE.

We had a wonderful experience overall. The only issue was check-in our luggage at the Split Airport counter. It was very confusing because we needed to pay for baggage.

Austrian Airlines help and service was fine, but Kayak misled us into believing we had purchased a Business Class ticket. In fact, the tickets were only upgraded Coach Class tickets with luggage restrictions that belonged to the Coach Class. Very disappointed! Paid over $$$$ 9K for the two tickets. Very disappointing!

Quick and organized boarding process, friendly staff but not as many snacks and drinks as the previous flight overnight

Landing was a little hard. Food was not great. No options.

Five star experience all around except for my seat, which was broken. It would only go down 70%.Of the way. It defeats the purpose of buying a business class ticket if you don’t actually get to lay flat..

WiFi would have been nice and some more powerful usb ports, available ports could not keep my phone’s charge much less charge the phone.

The flight was 1h delayed. There was a flight attendant making announcements in the cabin, but it was impossible to understand whether the information was important or not. (Although whatever she was saying, it was clearly meant to be communicated to the passengers.) From the way she spoke, it sounded like Spanish, but only thanks to catching one word out of every five or six — mumbled through her teeth — I realized she was actually speaking English. It was quite embarrassing

A delay of almost 3 hours. It was evident that the staff wanted us to board urgently, to the point of rudeness, to avoid paying compensation

The table at my seat was dirty, the crew was nice, the boarding was swift. An average Ryanair experience but this time the plane was not properly cleaned between flights.

It's not the staff's fault. The cabin crew do their best but the setup in Stansted Airport by Ryanair is poor. The herding of people like cattle is unacceptable before boarding and is something that's in every airport but only in Stansted have I seen the queueing of passengers outside the plane on the tarmac and the crew only turning up with maybe 5 minutes to depart. This is a resource issue . Yes prices are good but seemingly comes with a price of poor treatment of customers. I'll pay more next time

On time arrival but the aircraft had seen better days and needed a deep clean.

It was appalling, full of young people who were drunk and disobeying instructions to sit down. Crew did nothing to enforce. There was a Ryanair pilot sitting in the aisle opposite me who talked through out the safety briefing so loudly I couldn’t hear. Whole thing felt unsafe

Delayed for 2 hours lack of communication no refreshments as promised and the drinks on board were not as ordered and refused to refund

Straight forward checking as long as you have completed every single detail online, prior to checking day. Efficient boarding, seating is ok for a two hour flight. Fulfilledour travel requirements from Manchester to Marseille.

Cabin crew couldn’t be less interested. Cabin manager was the most arrogant and the rudest I’ve encountered in many years.

I couldn’t understand the aircraft tannoy announcements I was in seat 20C - nobody in our row could either. Speakers a bit too quiet plus messages read out too fast. Otherwise excellent flight. (Flight delayed by 50 mins)

Everything you need to know for your flight from London to Klagenfurt

Information on your arrival and departure airports

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