Kythira Airport, 10km southeast of Potamos, is connected to Athens in summer by both Olympic Air (www.olympicair.com; around €65, 50 minutes, one daily) and Sky Express (www.skyexpress.gr; €88, 50 minutes, twice daily except Tuesday and Wednesday). Ellinair (http://en.ellinair.com) flies to Kythira from Thessaloniki (€89, 75 minutes, twice weekly). There are far fewer flights in low season.
Boats from Neapoli in the Peloponnese come to Diakofti twice daily in summer, and once daily otherwise (€12.50, 1¼ hours); two each week continue to the even more remote island of Antikythira.
LANE Lines operates an intricate, seasonally changing schedule of ferries that connect Diakofti with Piraeus (€27, 6½ hours), Antikythira (€9.50), Kissamos (Kastelli, Crete; €22, 2½ to four hours) and Gythio (Peloponnese; €12.50, 2½ hours); in summer there are usually two weekly services to and from each of those destinations.