The project ON CLOUD NINE wants to develop a sustainable cross border connectivity, through an integrated transport model, able to increase mulThe project ON CLOUD NINE wants to develop a sustainable cross border connectivity, through an integrated transport model, able to increase multimodality and accessibility to airports. In particular, the project aims to improve the accessibility and mobility of passengers across the Programme area, by developing new air routes between the airports of the three countries, creating new facilities and services for travellers, and improving connections at urban and interregional level. This will pull down barriers for circulation of people and encourage cooperation in the Adriatic basin.