By Ship:
From: Piraeus, Syros, Mykonos, Fournoi, Samos, Chios, Mytilene, Limnos, Kavala, Thessaloniki, Patmos
https://www.bluestarferries.com/

By High Speed:
From: Samos, Fournoi, Patoms, Lipsi, Leros, Kalimnos, Kos
DODEKANISOS SEAWAYS: www.12ne.gr

By Plane:
From Athens: www.olympicair.com & www.skyexpress.gr
From Thessaloniki: www.olympicair.com
From Crete: www.skyexpress.gr