Recently, blockchain and its relationships with smart contracts have received increasing attention. The first and most popular applications of blockchain technology are cryptocurrencies - virtual currencies designed to use cryptography for secure payments, trading and investment. Blockchain is currently used in a number of industries, with the exception of the hotel industry and tourism. There are several applications in this area that certainly have the potential to become much more widely used. Tourism providers, whether hoteliers, carriers or travel agents, can benefit from the adoption of this technology by allowing them to establish easy, and most importantly, direct connections with their guests. The aim of this text is to provide an overview of the use of blockchain technology in tourism and to use SWOT analysis to present strengths and weaknesses and identify potential opportunities and threats.