One of the most popular day-trips you can take from Ischia is the one to two of the Amalfi Coast's jewels, the towns of Positano & Amalfi with regular sailings throughout the summer.
The day trips to Positano & Amalfi run on Thursdays and Sundays from Forio, Lacco Ameno, Casamicciola and Ischia Porto.
The Positano & Amalfi excursion is run by a company called Ischia Cruises. They have ticket offices in Ischia Porto (outside the Aragona Palace Hotel), Forio port and Lacco Ameno as well as a third party office in Casamicciola.