AirHint found the following cheapest return flights from London (STN) to Klagenfurt (KLU) in October 2025 (see full year).

Return flights

09 Oct - 12 Oct	Ryanair	direct
09 Oct - 19 Oct	Ryanair	direct
12 Oct - 16 Oct	Ryanair	direct
16 Oct - 19 Oct	Ryanair	direct
02 Oct - 05 Oct	Ryanair	direct
15 Oct - 19 Oct	Ryanair
09 Oct - 09 Oct	Ryanair
06 Oct - 09 Oct	Ryanair
23 Oct - 24 Oct	Ryanair
11 Oct - 14 Oct	Ryanair
24 Oct - 04 Nov	Ryanair

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

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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Cheapest return flights from London to Klagenfurt in October from 37€

Return flights