Cruise.com via ShermansCruise offers a Carnival Cruise 7-Night Baja Mexico Cruise for Two with prices starting at $978. (On the landing page, click the red "Book Now" button next to the March 17 sailing date.) That's the lowest price we could find for such a cruise in March 2018 by $120. This roundtrip cruise aboard the Carnival Splendor departs from Long Beach, CA, on March 17, 2018. Additional taxes and government fees may apply. Book this travel deal by September 30.