How get here by boat
You can access Alonnisos by several ways.
During the summer months there are ferries from Kimi to Alonnisos 2-3 times a week. You can also come from the ports of Agios Konstantinos and Volos.
From the port of Agios Konstantinos during the summer months there are flying cat ferries of Hellenic Seaways (routed ship 2-3 times a week from mid-June until the first week of September) and routes of ANES Ferries.
From the port of Volos τduring the summer months there are multiple routes of Aegean Flying Dolhpins and also daily ferries to Alonissos.
Alongside from early April starting daily flights to / from the ports of Volos and Agios Konstantinos by Flying Dolphin (and returns the ship Proteus with daily flights to the port of Volos).
How to ger here by aeroplane
If you are interested to come by air from Athens, you can fly to Skiathos with Olympic Air and get connecting service ship or flying cat to Alonissos.
Also the islands of Sporades are connected via charter flights from airports in Aghialos and Skiathos with many European cities.