One report from coinspace stated that a German-based Airline has become the first global airline to issue blockchain powered tickets where it recorded its first blockchain passengers to be the employees of an open-source travel distribution platform Winding Tree that were partnered up for tickets and an employee from the airline itself.
For further details about this story, read this article: https://coinspace.com/news/blockchain-news/german-airline-hahn-air-issues-first-blockchain-enabled-tickets