Vacations to Go offers a Carnival Cruise 7-Night Western Caribbean Cruise for Two bundled with a cabin upgrade with prices starting at $978. (If prompted, sign up for the free newsletter to see this deal.) That's the lowest current rate we could find for this cruise by $160. This roundtrip cruise departs from Galveston, TX, on April 6 with stops in Montego Bay, Jamaica; Grand Cayman, Cayman Islands; and Cozumel, Mexico. Some restrictions may apply; fees, government taxes, and fuel supplements are additional. This travel deal ends March 29.