Travel CDC: ‘Conditional Sailing Order’ allows cruise lines to sail Nov. 1 but it’s not likely they will October 30, 2020October 31, 2020 Morgan Hines, USA TODAY Comments Off on CDC: ‘Conditional Sailing Order’ allows cruise lines to sail Nov. 1 but it’s not likely they will Cruise ships will be allowed to sail in U.S. waters Sunday, according to a CDC order issued Friday but that doesn't mean passengers will be on board.