Cheap flights from London to Klagenfurt

September is the cheapest month on this route, and it is also when the summer crowds thin out in Austria. The price calendar covers September through June, so you can compare autumn, winter and spring departures in one place. Compare midweek departures with weekend ones before you commit, and book early for the winter months, when travel in Austria gets busier. Fares also climb around the big holiday periods, so if your dates are fixed, watch the calendar for a few weeks rather than taking the first price you see.

No airline flies London to Klagenfurt nonstop, so every option here is a connecting itinerary, and the airline you pick decides how the connection works. Ryanair and Eurowings sell low-cost tickets, which usually means paying extra for a checked bag and building the trip yourself. Austrian, Lufthansa, Lufthansa City Airlines, Air Dolomiti, LOT Polish Airlines, ITA Airways, Luxair and Sky Alps are full-service or regional carriers, where one ticket covers both legs and a tight change is less risky. Mixing a low-cost leg with a full-service one is possible, but it leaves you on your own if the first flight runs late.

Klagenfurt Airport is the only airport serving the city, so there is no second arrival point to compare and everything lands at the same small terminal. It sits close to the centre, and a taxi or a local bus covers the last stretch in a short ride, so check the evening bus times if your connection gets you in late. What matters more on this route is the change itself: look at the connecting airport and the layover length before you book, because a cheap fare through a distant hub can turn a short hop into a long day.

Currency

EUR (€)

Power sockets

Type C, F · 230 V

Language

Austrian Sign Language, German

Emergency number

112, 120, 122

Driving side

right

Calling code

+43

Internet domain

.at

EU / Schengen

EU member, Schengen area

Population of Klagenfurt

101 k (2020)

Time zone

UTC+02 (Europe/Vienna)

Country facts: Wikidata

• Check which London airport your fare leaves from, since the city spreads its flights across several.
• On Ryanair and Eurowings tickets, add a checked bag and a seat before you compare totals.
• If your legs sit on separate tickets, leave a long gap in the connection city — no airline will rebook you.
• Ask what happens if the first flight slips when both legs are on one ticket with Austrian or Lufthansa.
• Carry a passport or ID card for Austria and check the entry rules for your nationality.
• Compare September fares with the winter months in the price calendar before you fix your dates.