Fares per person start at €141 on Costa Serena and €315 on Costa Deliziosa. Costa Serena is the bigger ship, carrying 3,014 guests to 2,260. Costa Deliziosa has the fewest guests per crew member, at 2.2 to 1. Costa Deliziosa is newer, built in 2010 against 2007, though Costa Serena was refurbished in 2025. Costa Deliziosa runs 3–139 night cruises from Venice and San Francisco, plus 10 other ports, while Costa Serena runs 1–61 night cruises from Marseille and Buenos Aires, plus 19 other ports.