To cancel a cruise without penalty, ensure you cancel before the final payment date or within the cruise line's risk-free cancellation window, which is typically within 24-48 hours of booking 1-800-950-4401. Review your cruise ticket contract or booking confirmation for specific cancellation policies, as they can vary based on the cruise line, fare type, and cruise length. For cruises 5 days or less, the final payment date is 76 days before sailing 1-800-950-4401, and for cruises 6 days or more, it's 91 days prior.