There are various ways to reach Kasos

By boat:
From Piraeus Port of Athens by Blue Star Ferries with three Schedules per week.
From Rodos by Blue Star Ferries with four Schedules per week
From Crete, (Rethymno, Sitia) frequent Schedules

By Plane:
From Athens International Airport frequent flights.
Also there are flights from Thessaloniki, Rodos and Sitia.