General Edward Lawrence Logan International Airport (IATA: BOS, ICAO: KBOS, FAA LID: BOS), also known as Boston Logan International Airport and commonly as Boston Logan, Logan Airport or simply Logan, is an international airport that is located mostly in East Boston and partially in Winthrop, Massachusetts. It opened in 1923, covers 2,384 acres (965 ha), has six runways and four passenger terminals, and employs an estimated 16,000 people. It is the largest airport in both the Commonwealth of Massachusetts and the New England region in terms of passenger volume and cargo handling as well as the busiest airport in the Northeastern United States outside the New York metropolitan area.