The most common option is to travel by sea. Spetses is accessible with a Flying Dolphin from the port of Piraeus or from Hydra, Aegina and Poros. Another option is to travel by car (or by bus with (Argolida Prefecture Bus Company-KTEL) to Kosta in Peloponnesos and to get a boat from there to Spetses (the boat trip lasts around 15 minutes). Or there is the option of renting a car at the airport and self driving to Kosta where you leave the car and hop on a boat to the island. For more detailed information on how to get to the island please visit
www.spetses.gov.gr , the official website of the municipality of Spetses.