Girl Scout cookie season is here and they have new offerings Local News Posted: Feb 20, 2020 / 06:43 PM HST / Updated: Feb 20, 2020 / 06:43 PM HST Cookie fans, start your engines. Girl Scout cookies go on sale tomorrow. They have a new flavor, Lemon Ups this year. Sales continue until March 31st. Cookie lovers can search for a nearby cookie booth here.