Rule of Thumb for Cheapest Times to CruiseWhile we believe that there are no bad times to take a cruise, certain weeks of the year are often cheaper than others. While some weeks (especially Christmas and New Year’s Eve) are notorious for having high rates due to an increase in demand, the following weeks are generally the cheapest times to take a cruise. First two weeks of December – Sandwiched between the popular cruise weeks of Thanksgiving and Christmas, the first two weeks of December will often have great rates. Cheapest Cruise to MexicoThe most inexpensive times to cruise to Mexico will be very similar to Caribbean cruises. Some of the most popular cruise lines that offer great deals on cruises are Carnival Cruise Line, Norwegian Cruise Line, and Royal Caribbean.