In 2026, kids are rarely "automatically" free, but many major lines offer frequent "Kids Sail Free" promotions. Royal Caribbean is the leader in this space, often offering $0 cruise fare for children aged 12 and younger on select sailings of 4 nights or longer, provided they are the 3rd or 4th guests in the same stateroom as two full-fare paying adults. MSC Cruises also frequently runs deals where children under 18 sail for free (or at a significantly reduced rate) on certain itineraries. However, it is important to note that even when the cruise fare is "free," you must still pay the taxes, port fees, and daily gratuities for the child, which can add up to $200–$400 depending on the trip length. Furthermore, these "free" deals usually exclude peak holiday periods like Spring Break and Christmas. For lines like Disney Cruise Line, children are almost never free and are instead charged a "3rd/4th guest" rate that is typically about 50% of the adult fare, reflecting the premium child-focused amenities on board.
That’s an excellent question, and the answer is a bit more nuanced than a simple yes or no.
In short: Kids are almost never “free” on a cruise, but they can often sail at a significantly reduced rate, especially when sharing a cabin with adults.
Here’s a detailed breakdown of how cruise pricing works for children:
Many cruise lines run frequent sales with slogans like “Kids Sail Free” or “3rd & 4th Guests Free.” These are the closest you’ll get to free kids. How it works: The cruise fare is typically based on the first two guests in a cabin (who pay the full fare). The third, fourth, and sometimes even fifth guests in the same stateroom sail for just taxes, fees, and port expenses (which can be $100-$300+ per person). The Catch: These promotions almost always have blackout dates (spring break, summer, major holidays). They often apply only to select sailings and specific cabin categories (usually interior or oceanview). The “free” child must be under a certain age, commonly 12 or 17, depending on the line.
Outside of promotions, cruise fares are usually priced per person, based on double occupancy. First & Second Guest: Pay the full published fare (which varies by cabin type and sailing date). Third, Fourth, Fifth+ Guests: Pay a lower “additional guest” fare. This is almost always cheaper than the first two fares, making kids less expensive. Example: A cabin might be listed as “$1,000 per person” for the first two. The third person (your child) might only be an additional $400.
Even with a “Kids Sail Free” promo