Generally not required for stays of up to 90 days (or at all for EU nationals); some nationalities need a Schengen visa.
Sardinia is well connected to the rest of Europe by air. Ferries also serve the island from Genoa, Livorno, Civitavecchia and Naples. Flights, cars and tours can be booked online at www.lonelyplanet.com/bookings.
Public transport in Sardinia is reasonably priced but it can be difficult and time-consuming in the island's remoter corners. Services slow to a trickle in the low season.
Train The main line runs from Cagliari to Oristano, then on to Chilivano-Ozieri where it branches northwest to Sassari and northeast to Olbia. See Trenitalia (www.trenitalia.com) for timetables.
Car You'll need your own set of wheels in Sardinia if you really want to explore. A car is often the only way to access off-the-beaten villages, the mountainous hinterland and uncrowded beaches.
Bus In most cases buses are preferable to trains. For timetables, visit ARST (www.arst.sardegna.it).