AirHint found the following cheapest return flights from London (STN) to Keffallinia (EFL) in August 2025 (see full year).

Return flights

27 Aug - 10 Sep	Ryanair	direct
13 Aug - 03 Sep	Ryanair	direct
06 Aug - 13 Aug	Ryanair	direct
27 Aug - 03 Sep	Ryanair	direct
20 Aug - 03 Sep	Ryanair	direct
28 Aug - 03 Sep	Ryanair
31 Aug - 03 Sep	Ryanair
26 Aug - 03 Sep	Ryanair
13 Aug - 20 Aug	Ryanair	direct
27 Aug - 04 Sep	Ryanair
27 Aug - 06 Sep	Ryanair
09 Aug - 13 Aug	Ryanair	direct
31 Aug - 11 Sep	Ryanair
13 Aug - 16 Aug	Ryanair
06 Aug - 20 Aug	Ryanair	direct
17 Aug - 20 Aug	Jet2	direct
02 Aug - 06 Aug	Ryanair	direct
06 Aug - 09 Aug	Ryanair	direct
13 Aug - 16 Aug	Ryanair	direct
16 Aug - 20 Aug	Jet2	direct

Also check the deals for one-way flights from London to Keffallinia in August.

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 Keffallinia in August from 108€

Return flights