AirHint found the following cheapest return flights from London (STN) to Keffallinia (EFL) in May 2026 (see full year).

Return flights

30 May - 10 Jun	Ryanair
06 May - 10 May	Jet2	direct
02 May - 10 May	Jet2	direct
30 May - 06 Jun	Ryanair
29 May - 07 Jun	Ryanair
26 May - 02 Jun	Ryanair
11 May - 25 May	Ryanair
09 May - 17 May	Jet2	direct
19 May - 02 Jun	Ryanair
02 May - 09 May	Jet2	direct
03 May - 07 Jun	Jet2
02 May - 16 May	Jet2	direct
26 May - 05 Jun	Ryanair
17 May - 22 May	Jet2
26 May - 30 May	Ryanair
11 May - 17 May	Ryanair
10 May - 15 May	Jet2
20 May - 01 Jun	Ryanair
31 May - 06 Jun	Ryanair
28 May - 08 Jun	Ryanair

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

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 May from 229€

Return flights