Cruises can be the cheapest way to travel when you factor in the "All-Inclusive Value" of food, transport, and lodging combined. In 2026, a budget interior cabin on a mainstream line (like Carnival or MSC) can cost as little as $70 to $100 per day, which is often less than the price of a mid-range hotel alone in expensive cities like New York or London. Because the ship acts as your "floating hotel," you save hundreds on regional flights or train tickets between destinations. However, the "cheapest" title only holds if you avoid the "hidden" costs: port fees, mandatory gratuities (often $16–$20 per person, per day), and expensive drink packages. If you are a solo traveler, cruises can actually be quite expensive due to the "Single Supplement" (paying for two people in one room). For a family of four, a cruise is almost always more economical than a land-based trip with separate hotels and meals, but for a backpacker staying in hostels and taking budget buses, land travel remains the lower-cost champion of the world.