Details: Norwegian Cruise Line
The line's new ship, Epic, offers 128 studios for solo travelers. Cabins start at $999 per person, plus up to $175 in taxes and fees. Through early spring, the ship departs from Miami and alternates between two seven-night itineraries in the Caribbean: western (Costa Maya and Cozumel, Mexico; Roatan, Honduras) and eastern (St. Maarten, St. Thomas, Nassau in the Bahamas). In May, the ship leaves for Europe and spends the summer sailing around the Western Mediterranean.