Sullivan County International Airport (IATA: MSV, ICAO: KMSV, FAA LID: MSV) is in Bethel, Sullivan County, New York. It is seven miles northwest of Monticello, a village in the Town of Thompson. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation facility.

Built in the 1960s, the airport is now a Part 139 certified airport capable of handling business jets.