Antonio Nariño Airport (Spanish: Aeropuerto Antonio Nariño, IATA: PSO, ICAO: SKPS) is an airport located in the town of Chachagüí and which serves the city of Pasto in the Nariño Department of Colombia. The airport is 35 kilometres (22 mi) north of Pasto. It handles only domestic flights in addition to military operations and private charters. A new terminal, administrative and tower control were built, also new navigation equipment was set up due to the increasing number of passengers and cargo flights.