Delaware Route 15 (DE 15) is a state highway in the U.S. state of Delaware. The route runs from DE 14 west of Milford in Kent County to U.S. Route 301 (US 301)/DE 71/DE 896 in Summit Bridge, New Castle County, just south of Summit Bridge over the Chesapeake and Delaware Canal. DE 15 winds a path through many rural sections of Delaware, turning along many different roads.