Vacations to Go offers a Carnival Cruise 4-Night Western Caribbean Cruise for Two with prices starting at $308, as provided by Dunhill Travel. (If prompted, sign up for the free newsletter to see this deal.) That's the lowest price we could find for this cruise by $70. (We listed it in June with a $50 onboard credit for $358.) This roundtrip cruise aboard the Carnival Ecstasy departs from Miami, FL, on December 1 with stops in Key West, FL, and Cozumel, Mexico. This travel deal ends October 7.