The phrase "holiday surcharge" refers to an additional fee or extra cost that is added specifically during holiday seasons or major holidays. Full definition
On airfare, this could lead to huge savings since most airlines charge holiday surcharges during holidays and the busy summer season. (travelinsurancereview.net)
On December and January extensions there is an additional holiday surcharge of $ 200 per person. (nationalgeographicexpeditions.com)
For the December 21, 2018 departure, there is an additional holiday surcharge of $ 200 per person. (nationalgeographicexpeditions.com)