Sandefjord Airport, Torp is a minor international airport located 4 nautical miles northeast of Sandefjord and 110 kilometers (68 mi) south of Oslo in Norway. The airport features a 2,989-meter (9,806 ft) runway aligned 18/36. Torp partially serves as a regional airport for Vestfold and in part as a low-cost airport for Eastern Norway and the capital, Oslo. Widerøe have a base at Torp, serving both domestic and shorter International flights. It also sees scheduled flights by airBaltic, Ryanair, Wizz Air, and Norwegian Air Shuttle. As of 2021, it is the second-largest airport in eastern Norway in terms of flights after Rygge shut down in 2016.

Vestfold is a county and a current electoral district in Eastern Norway. Located on the western shore of the Oslofjord, it borders Buskerud and Telemark counties. The county administration is located in Tønsberg, Norway's oldest city, and the largest city is Sandefjord. With the exception of the city-county of Oslo, Vestfold is the smallest county in Norway by area. Vestfold was until 2019 the only county in which all municipalities had declared Bokmål to be their sole official written form of the Norwegian language.