Bus tickets cannot be bought onboard the bus. You can buy tickets in Piazza Matteotti (CTM ticket office) from 07:30-13:30 Monday through Saturday (closed on Sundays). Or you can buy them from the automatic machine at the same location (available 24/7). It is also usually possible to by bus ticket in Tabacchi in the center of Cagliari.

For more details:

https://www.ctmcagliari.it/punti-vendita/

To reach Poetto Beach (Marina Piccola and further stops), you can take buses PF or PQ from Piazza Matteotti. To reach the Calamosca beach, you can take the 5ZE bus. All routes and schedules can be found using the “bus” function on Google Maps.

Prices bus tickets:

• Single fare (whole bus CTM network, does not include Metrocagliari). Validity 90 min. Price 1,30 €.

• Multiple ticket (does not include Metrocagliari). Validity 12 journeys - 90 min each. Price 13,00 €.