Cruise.com via ShermansCruise offers a Carnival Cruises 4-Night Mexico Cruise for Two with prices starting from $388. (Scroll to the bottom of the landing page and click "Book Now" next to the February 5 sailing date.) That's the lowest price we could find by $30. This roundtrip cruise aboard the Carnival Inspiration departs from Long Beach, CA, on February 5. Additional fees may apply. Book this travel deal by February 4.