From Acqui Terme train to Savona, train to Ventimiglia, then train to Cannes. 5hrs 37min 41 €. From Acqui Terme bus to Alessandria, bus to Genova, bus to Nice Côte d'Azur Airport T1, then bus to Cannes. 7hrs 45min 64 €. From Acqui Terme drive to Cannes. 3hrs 19min 43 €.