In 2026, the cost of a "Galaxy" cruise—specifically the highly-rated Galaxy Sirius Galápagos expedition—varies significantly based on the length of the itinerary and the time of year. For a 5-day/4-night journey (Itinerary A), prices typically start around $4,560 per person when promotional discounts are applied, down from a standard rate of $5,700. For those seeking a more extensive experience, the 6-day/5-night voyages (Itineraries B and C) generally range from $6,035 to $7,100 per person. These prices reflect the luxury nature of the vessel, which offers spacious cabins, expert naturalist guides, and all-inclusive gourmet dining while exploring the volcanic landscapes of the Galápagos Islands. If you are looking for the "December Special" on similar catamarans within the same fleet, rates can climb as high as $9,585 per person. These costs typically include all on-board meals, guided shore excursions, and equipment for activities like snorkeling and kayaking, though international airfare to the islands is usually an additional expense.