Cheapest one-way flights from London to Klagenfurt in September from $20

AirHint found the following cheapest one-way flights from London (STN) to Klagenfurt (KLU) in September 2025 (see full year).

One-Way flights

25 Sep Ryanair direct
21 Sep Ryanair direct
07 Sep Ryanair direct
28 Sep Ryanair direct
04 Sep Ryanair direct
20 Sep Jet2
10 Sep Ryanair

Also check the deals for return flights from London to Klagenfurt in September.

Skyscanner

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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