If you are planning to reach Alonnisos by boat from Volos, then prior to your trip you need to reserve and pay for tickets tickets for the roughly 3.5 hour boat trip on to Alonnisos. To book passage, visit Ferryscanner.com. The is fairly easy to navigate, just choose your ldeparture and arrival ports, the dates, and then follow the prompts. As of the summer of 2024, the old Hellenic Seaways (Flying Cats, Skiathos Express Ferry) no longer exist, and the dominant player in the market is called “Seajets.”
If you don’t have a smartphone, you may need to stop by the office of the travel agency in Volos that sells Seajets tickets (I’m pretty sure it’s called “Sporades Travel”) with your confirmation and they will print you actual tickets. They also may ask you for a passport for identification. When you have your ticket(s), if the boat is leaving shortly I recommend you promptly proceed to the boarding area which is across the street from the travel agency.
Please note that a company called Aegean Flying Dolphins also operates an older boat called the Flying Dolphin that is much smaller than a ferry and less comfortable. They are however, a bit faster than the typical ferry, and the price of the tickets may be somewhat less. Note that if you have any concerns about rocky seas you may want to limit yourself to only booking a berth on a Seajets ferry. I recommend using the Ferryscanner.com site to learn what other boat options exist.
Staying in Volos
If the arrival time in Volos is such that you are unable to connect with a boat to Alonnisos, please check the Category Archives (to your right and up) under “Hotel in Volos” for information regarding the properties I recommend.