Cheap Flights from Klagenfurt to Lisbon

Compare Klagenfurt to Lisbon flight deals

Find the cheapest month or even day of the year to fly to Lisbon

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Find the cheapest month to fly from Klagenfurt to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Klagenfurt to Lisbon flights are currently cheapest in October.

Klagenfurt to Lisbon: Alternative routes

Compare routes from Klagenfurt to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

Klagenfurt to Lisbon: Flight information

The things to know before you go.
Cheapest flight foundR 1,703
Cheapest month to flyOctober

Finding cheap flights from Klagenfurt to Lisbon: Frequently asked questions

The best price we found for a return flight from Klagenfurt to Lisbon is R 3,844. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Klagenfurt to Lisbon. But we found flights with one or more stops from R 3,844.
As of September 2025, there are no flights flying from Klagenfurt to Lisbon.
The cheapest month to fly from Klagenfurt to Lisbon is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Klagenfurt Airport to Lisbon Airport on Thursday, 16 October 2025.
No airlines currently offer direct flights between Klagenfurt Airport and Lisbon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Lisbon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Lisbon.

Flying from Klagenfurt Airport (KLU) to Lisbon Portela Airport (LIS): what you need to know

  • Lisbon is one hour behind Klagenfurt and observes the UTC+0 timezone.

  • Leave plenty of time to catch your KLU to LIS flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Be prepared for longer lines in popular months like July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a wise move.

  • If you'd like to break up your flight, simply deselect 'Direct flights only' when searching for your ticket from Klagenfurt Airport to Lisbon Portela Airport. These are the most popular stopovers between KLU and LIS:

    • Palma de Mallorca Airport

    • Stansted Airport

    • Vienna International Airport

How to find the cheapest flights from Klagenfurt Airport (KLU) to Lisbon Portela Airport (LIS)

  • Currently, R 1,703 is the lowest price we've seen for a one-way Klagenfurt Airport to Lisbon Portela Airport flight. The best price for a return plane ticket is R 3,844. Bear in mind that fares could change due to availability when booking.

  • To get your hands on cheap tickets from KLU to LIS, book as early as you can. Airlines usually offer lower prices when flights are first released.

  • Finding cheap flights from Klagenfurt Airport to Lisbon Portela Airport is more likely if you can be flexible with your travel dates. Use the 'Whole month' search function to see the lowest prices across every month and snap up a great deal.

  • Snapping up cheap flights from KLU to LIS is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll let you know when a lower fare pops up.

  • Secure the perfect flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Klagenfurt Airport to Lisbon Portela Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Klagenfurt Airport (KLU)

  • Klagenfurt Airport gets high marks for its on-time performance. 89.42% of flights that take off from KLU arrive at their destination without delay.

  • Klagenfurt Airport is about 5 kilometres from central Klagenfurt. If you're driving, ride-sharing or catching a cab from the centre, it'll take 10 minutes or so to get there, depending on the traffic.

  • You can expect a journey time of around 30 minutes when using public transport.

  • Get your holiday off to a relaxed start by staying near KLU. Whether you're boarding an early flight from Klagenfurt Airport to Lisbon Portela Airport or just don't like being rushed, these hotels are ideal:

Arriving at Lisbon Portela Airport (LIS)

  • The last thing you want is a lengthy trip to your hotel if you're landing late on a Klagenfurt Airport to Lisbon Portela Airport flight. Stay at one of these accommodation options near LIS instead:

  • Pick up a Lisbon Portela Airport rental car and discover Lisbon and beyond with your own set of wheels. Klass Wagen, Goldcar and OK Mobility are top providers you can book with here.

  • Secure the lowest price by booking your vehicle from Lisbon Portela Airport about two weeks in advance of your trip.

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • Lisbon Portela Airport to central Lisbon has a drive time of about 20 minutes. It's approximately 10 kilometres away.

  • If you're using public transport, expect a journey time of around 1 hour.

When to fly to Lisbon Portela Airport (LIS)

  • June is the most popular month for flights from Klagenfurt Airport to Lisbon Portela Airport. To escape the crowds, travel to Lisbon in January.

  • The warmest month in Lisbon is August, with the temperature ranging between 16ºC (61ºF) and 29ºC (84ºF). Book your flights from Klagenfurt Airport to Lisbon Portela Airport in this month if you like this kind of weather.

  • Search for cheap tickets from KLU to LIS in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 8ºC (46ºF) and 16ºC (61ºF) on average.

Explore more of Portugal

  • You've done Lisbon, now it's time to explore more of Portugal. Travel about 274 kilometres north to Porto to check off its leading sights. From Livraria Lello to Ribeira District and The Douro River, your itinerary will be busy.

  • Around 8 kilometres north-west of Lisbon, Amadora is another favourite stop in Portugal. Experience this destination's highlights firsthand at Jardim Porta do Viveiro Alfragide, Jardim Caracol do Victor Alfragide and Jardim e estatua Eduardo Jorge.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.