Deerfield Valley Regional Airport (FAA LID: 4V8) (formerly Mount Snow Airport) was a privately owned, public use airport located one nautical mile (2 km) southwest of the central business district of West Dover, in Windham County, Vermont, United States.

The airport was permanently closed by FAA NOTAM on June 3, 2019.

The airport's location was within 5 miles of three visitor attractions: the Hermitage Club, the Hermitage Golf Course, and Mount Snow ski area.

The property covers an area of 35 acres (14 ha) at an elevation of 1,953 feet (595 m) above mean sea level. It has one runway designated 1/19 with an asphalt surface measuring 2,650 by 75 feet (808 x 23 m).

For the 12-month period ending July 8, 2013, the airport had 3,100 general aviation aircraft operations, an average of 258 per month. At that time there were seven aircraft based at this airport: 5 (71%) single-engine and 2 (29%) multi-engine.

During the 2012-2019 time period, seasonal passenger flights were available from Westchester County Airport in White Plains, NY to Deerfield Valley Airport. The service was provided by Tradewind Aviation, an air taxi service that operates 8-seat Pilatus PC-12 aircraft.

• List of airports in Vermont

• Deerfield Valley Airport, official website
• Aerial image as of May 1992 from USGS The National Map
• FAA Terminal Procedures for 4V8, effective September 5, 2024
• Resources for this airport:
  • FAA airport information for 4V8
  • AirNav airport information for 4V8
  • FlightAware airport information and live flight tracker
  • SkyVector aeronautical chart for 4V8