The nearest airport to Sassari is ALGHERO - FERTILIA (about 30 Km from Sassari). All destination to/from Alghero Airport are available on the Destinations page.
Sardinia has other two airports with serve different destinations: OLBIA COSTA SMERALDA (in the North-East of the island) and CAGLIARI-ELMAS (in the South of the island)
The nearest seaport to Sassari is Porto Torres (about 20 Km from Sassari). Ferries sail from Genoa and Civitavecchia (Rome). The Porto Torres-Sassari stretch is served by a frequent bus service. You can also travel to other seaports of the island, such as Cagliari, Olbia or Arbatax, which are connected to Sassari by several bus and railway companies.