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

Return flights

02 May - 06 May	Jet2	direct
30 May - 06 Jun	Ryanair
29 May - 05 Jun	Ryanair
10 May - 17 May	Jet2	direct
13 May - 20 May	Jet2	direct
27 May - 10 Jun	Ryanair
26 May - 02 Jun	Ryanair
27 May - 03 Jun	Ryanair
05 May - 12 May	Ryanair
13 May - 23 May	Jet2
17 May - 22 May	Jet2
20 May - 27 May	Ryanair
17 May - 24 May	Jet2	direct
16 May - 24 May	Jet2	direct
11 May - 15 May	easyJet
30 May - 06 Jun	Jet2	direct
27 May - 01 Jun	Ryanair
31 May - 14 Jun	Jet2
21 May - 04 Jun	TUI	direct
31 May - 14 Jun	Jet2	direct

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 $312

Return flights