For a cruise in 2026, the "sweet spot" for planning is typically 6 to 12 months in advance. Booking early is the best way to secure your preferred stateroom category (especially high-demand balcony suites or specific family cabins) and benefit from "Early Booking" discounts. If you are targeting a specialized itinerary, such as an Alaska glacier cruise or a Mediterranean summer voyage, 12 months is recommended as these routes often sell out their best value rooms quickly. Conversely, if you are flexible with your dates and cabin type, you can sometimes find "Last Minute" deals roughly 60 to 90 days before sailing, which is when the final payment deadline for early bookers passes and the cruise line knows exactly how much inventory remains. However, in 2026, with the high demand for "iconic" new ships, waiting for a deal is a gamble that may result in much higher airfare costs, effectively neutralizing any savings you found on the cruise fare itself.