Hawaii cruises from San Francisco typically last 15 to 16 days and are offered by major lines like Princess Cruises and Carnival. These round-trip voyages include visits to several Hawaiian islands—such as Maui, Oahu, Kauai, and the Big Island—along with a required stop in Ensenada, Mexico, to comply with U.S. maritime laws. Princess Cruises sails multiple times per year, including sp... https://www.kairosoceancruiseline.com/hawaii_cruise.html