Hi,
Please give me an advice how can I get from Thassos to Thesaloniki in October
Thank you in advance
Hi Kosto 
We have a section (link below) which explains how to get to Thassos from Thessaloniki, and the same information applies for getting to Thessaloniki from Thassos.
https://www.go-thassos.gr/about-thassos/getting-to-thassos
If there is anything specific you’d like to know, please feel free to ask and I’ll be very happy to help.