GUILFORD, CT—December 2, 2024—American Cruise Lines is pleased to announce news for 2025, including more new ships, 8 new itineraries, and the longest river cruise in the country, the 51-Day Great United States. 2025 offerings also feature an array of exclusive U.S. cruises, unavailable with any other Line, including bucket-list adventures , American Cruise Lines will offer two of the longest river cruises in the U.S. in 2025. These include a 51-day Great United States cruise from Portland to Boston, and a 36-day Civil War Battlefields cruise from New Orleans to Gettysburg., All of the major U.S.-based cruise lines like Royal Caribbean, Norwegian Cruise Line, Celebrity, Princess, Carnival, Holland America and Disney among others have ships that homeport in the U.S , American Cruise Lines said it will offer one of the longest river cruise packages ever sold in the U.S., spanning 51 days on three rivers on three ships. The Great United States itinerary starts , Find an American Cruise Lines river cruise in the US on the Mississippi, Columbia & Snake Rivers, New England & Alaska Waterways, American Cruise Reviews: See what 1,166 cruisers had to say about their American cruise. Find detailed reviews of all American cruise ships and destinations..