From Neapolis the ferry Porfyrousa maintains an almost daily connection with Kythera. Sailing time is about 1,5 hour.
From Gythion the ferry Ionis travels once per week to Kythera. Sailing time is about 3 hours.
It is a 5 hour drive from Athens Airport to Neapolis, via a beautiful route along the coast and through the mountains. If you have enough time, there are plenty of sights to admire along the way. The places Nafplion, Leonidio, Kosmas and Monemvasia invite for a visit or even an overnight stay.