If the offers provided by buses do not suit your needs, trains and carpooling could represent a good alternative for this distance.
How many bus connections exist to go from Cagliari to Serramanna per day?
What time do the busses to Serramanna leave?
The average duration of the journey is 58 minutes, but the fastest bus connections get you to Serramanna in 39 minutes. The first bus is scheduled at 10:06 and the last one at 22:06.
By bus from Cagliari to Serramanna: which companies offer the service?
You can travel by bus from Cagliari to Serramanna with Trenitalia.
Trenitalia, Ferrovie dello Stato group, is currently the biggest rail society in Italy, which, however, also offers bus connections through its Freccialink, providing in a single solution the combination of Frecce and buses.