The cheapest way in. Nothing listed is quicker.
Ciampino Airlink, regional trains, port shuttle and Grimaldi ferry to Cagliari
Ciampino AirlinkFL4FL6FL5Port shuttleGrimaldi · Trenitalia, ATRAL, Port Mobility and Grimaldi LinesPickup, hours & luggage
Boards at. Ciampino Airlink bus stand, in front of the terminal
Two tickets: EUR 6.80 for the one Trenitalia ticket from Ciampino Aeroporto to Civitavecchia, bus included, and at most EUR 30 for a deck place (Ponte) on Grimaldi, one way, the maximum Grimaldi may charge outside high season. In high season, 1 June to 30 September, the maximum is EUR 35. Grimaldi's online price can be lower. The port shuttle is free.
