Sanford Seacoast Regional Airport is a public airport located four miles southeast of the central business district of Sanford, a city in York County, Maine, United States. The airport operated as Naval Auxiliary Air Facility Sanford supporting operations of Naval Air Station Brunswick from 15 April 1943 until 1 February 1946. This airport is now publicly owned by th…Sanford Seacoast Regional Airport is a public airport located four miles southeast of the central business district of Sanford, a city in York County, Maine, United States. The airport operated as Naval Auxiliary Air Facility Sanford supporting operations of Naval Air Station Brunswick from 15 April 1943 until 1 February 1946. This airport is now publicly owned by the City of Sanford.