Massena International Airport (IATA: MSS, ICAO: KMSS, FAA LID: MSS) (Richards Field) is in St. Lawrence County, New York. It is two nautical miles (3.7 km) east of the village of Massena. The airport sees one airline, subsidized by the Essential Air Service program.

Federal Aviation Administration records say the airport had 971 passenger boardings (enplanements) in calendar year 2008, 3,252 in 2009 and 3,350 in 2010. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation airport.