Stockholm Skavsta Airport, or Nyköping Airport is an international airport in Nyköping Municipality, Sweden, 5 km northwest of Nyköping and approximately 100 km southwest of Stockholm. It is served primarily by low-cost airlines and cargo operators, and is the fifth-busiest airport in Sweden. The airport is located far outside Stockholm Municipality and Stockholm County, but is named Stockholm for marketing purposes, and is included in STO, the IATA airport code for all Stockholm airports.