For the military use of this facility, see Stewart Air National Guard Base. Stewart International Airport (IATA: SWF, ICAO: KSWF, FAA LID: SWF) is a public/military airport in Orange County, New York, United States. It is in the southern Hudson Valley, west of Newburgh, New York, approximately 60 miles (97 km) north of Manhattan, New York City. The airport is in the Town of Newburgh and the Town of New Windsor.