Alonissos is accessable via ferry from Volos, Agios Konstantinos, and Skopelos. Patitiri is the third stop both from Skiathos harbour and the mainland and takes about 1½ hours from Skiathos and 4 hours from Aghios Constantinos. While Cruise ships dock at the Patitiri Port.
By plane
By plane
There is no airport on the island itself but you can fly to either the nearby island of Skiathos in peak season or to Athens on the mainland. From either of these you will proceed to Alonissos by boat.