Alghero-Fertilia airport is 10 km away: since 22 June 2026 the ARST urban line links it to the centre every 30 minutes from 5 am to 11:26 pm, with the same ticket as the whole urban network, €1 per ride, also sold on board by card or smartphone with no surcharge (or in cash at the airport machines); otherwise taxi. In town you walk; in summer urban and regional buses link Maria Pia, Le Bombarde, the Lazzaretto and Porto Conte. For Neptune's Grotto: boats from the marina (a scenic crossing beneath the cliffs) or the bus to Capo Caccia and the Escala del Cabirol descent. Regional train to Sassari; for Bosa, car or seasonal buses only.
- To walk down the Escala del Cabirol book your slot on Alghero Experience before setting out: without a booking you're turned away, even holding a grotto ticket.
- Choose the morning for the grotto: after midday the stairway is in full sun and the climb back up (654 steps) gets tough in summer.
- The Capo Caccia forecourt is closed to parking: park free at La Stalla and take the shuttle, or walk.
- In a strong mistral the grotto boats don't sail and the cave may close: recheck the official site the same morning.
- In August for Le Bombarde and the Lazzaretto arrive by 9 or aim for Mugoni: beach car parks fill early.
- The Bosa coast road has no fuel stations and few water points: leave with a full tank and stop at the marked belvederes.