IUOTO - International Union of Official Travel Organization it is a nongovernmental technical body to promote tourism for the advancement of all nations.
UNWTO - World Tourism Organization - aims to promote sustainable tourism and protect the environment.
in 1991 the Philippines was admitted to the Department of Tourism.
ICAO - International Civil Aviation Organization - it promotes civil aviation of a worldwide basis.
IATA - International Air Transport Association - promote safe, regular and economical air transport.
