Sakhon Nakhon Airport (IATA: SNO, ICAO: VTUI) is an airport in Sakon Nakhon, Thailand. It is used for civil and military purposes (Royal Thai Air Force). It is currently served by two low-cost carriers, namely Nok Air and Thai AirAsia.Sakhon Nakhon Airport (IATA: SNO, ICAO: VTUI) is an airport in Sakon Nakhon, Thailand. It is used for civil and military purposes (Royal Thai Air Force). It is currently served by two low-cost carriers, namely Nok Air and Thai AirAsia.