The cost of a seven-day cruise depends on its destination; for example, a seven- to 10-night cruise to the Caribbean runs $550 to $1,200 per person, while the same cruise to Alaska costs $430 to $6,000 as of 2015. Sailing dates and stateroom choices also affect the overall cruise cost.
Room choice is a big determinant in the cost of seven-day cruises. For instance, an Alaskan cruise in an upgraded stateroom with a balcony runs from $775 to $1,710 more, while an upgrade to a suite costs around $1,350 to $1,900 more than the cost of a standard interior room.
The cruise line chosen also affects price. Alaskan cruises with Disney run around $1,150 for a seven-night booking, while Norwegian Cruise Lines offers a seven-day cruise in an interior stateroom for $500 to $750 per person.