Travel Cruises: What is wave season? And are these early-season deals really worth it? January 11, 2020Erica Silverstein and Brittany Chrusciel, CruiseCritic.comComments Off on Cruises: What is wave season? And are these early-season deals really worth it? Cruise lines and travel agents offer extra incentives from January to March – typically free perks and reduced fares – in hopes customers will book.