JetBlue is adding routes to the Caribbean and Florida later this winter. The airline will begin daily nonstop flights between Orlando and Santo Domingo, Dominican Republic, on March 6; between Orlando and Cancun on March 13; and between Boston and Jacksonville, FL, on March 15. On Thursday, JetBlue launched service to its third city in the Dominican Republic, with daily nonstops to Puerto Plata from New York JFK. Visit www.jetblue.com. (JM)