The summit “Behavioral Economics & Sustainable Tourism” will have as its theme the Sustainable Development of Tourism in Kefalonia and Ithaca in relation to practices used by agencies, businesses, tourists and residents based on Behavioral Economics. The purpose of the conference is to present the basic principles of Sustainable tourism development based on the triptych: environment, economy, society, but also to submit specific proposals to all the agencies involved in tourism on the islands for the step-by-step adoption of these basic principles. At the conference, scientific papers will be presented regarding the best practices of sustainable tourism development internationally but also the degree of adoption of the principles of sustainable tourism development in Kefalonia, Ithaca at the moment. In addition, topics related to the environment, recycling, green development, energy, circular economy, cooperation between tourist operators, the participation of the local community in tourism development, the adoption of Behavioral economics principles for the sustainable development of tourist destinations