Book your "Low Cost" flight
www.whichbudget.com

If you prefer to travel by train
www.ferroviedellostato.it

Ferry and hydrofoils for Ischia
www.alilauro.it - Hydrofoils from Naples Mergellina and Naples Molo Beverello
www.caremar.it - Hydrofoils (from Naples Mergellina and Naples Molo Beverello) and ferries (from Pozzuoli and Naples Porta di Massa)
 www.medmargroup.it - Ferries from Pozzuoli and Naples Porta di Massa

Bus service on Ischia
www.ischiaonbus.it  

Car Hire on Ischia
www.noleggiodelfranco.it - For booking a car/scooter in advance delivered to the hotel

Ischia, some useful links
www.lamortella.org - Splendid botanical garden and concert venue for classical music
www.giardiniposeidonterme.com - The largest thermal garden on Ischia
www.negombo.it  - Thermal spa park situated in the Bay of San Montano and home of the flower and plant show "Ipomea" 
www.castelloaragonese.it/03.html  -  Castello Aragonese - symbol of the island