Cheapest return flights from London to Klagenfurt in December from 115€

AirHint found the following cheapest return flights from London (LON) to Klagenfurt (KLU) in December 2026 (see full year).

Return flights

26 Dec - 11 Jan Ryanair direct
26 Dec - 02 Jan Ryanair direct
27 Dec - 03 Jan Austrian Airlines

Also check the deals for one-way flights from London to Klagenfurt in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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