Core Holidays
The Alley Hotel, Argostoli

Price by departure month

Per person, 7 nights, 2 adults — cheapest of ten UK airports. Going in May 27 instead of Aug 27 saves £307 per person (32%).
£550£700£850£1,000MayJunJulAugSepOct

May 27 in Kefalonia averages a daily high of 26°C with about 4 wet days — £24 per °C, per person.