Costa Diadema: 7 nights from Montevideo

Costa Diadema sails this route on 2 dates between December 2026 and January 2027. A 7-night round trip from Montevideo, sailing in the afternoon. After a day at sea it calls at Itajai and Santos. After two more days at sea it calls at Buenos Aires. The stops are in Brazil and Argentina, and calls last 7 to 10 hours. You're back in Montevideo in the morning. Costa Diadema (2014) carries up to 3,724 guests on 14 decks.