In 2050 the number of passengers travelling globally aboard civil aircrafts is predicted to be six-fold higher than today. New and promising technologies in the fields of high-speed propulsion and high-temperature resistant materials make it possible to think about the exploitation of the stratosphere for long distance routes to be covered in shorter time frames with respect to conventional civil passenger aircrafts. The STRATOFLY project has received funding from the European Union’s Horizon 2020 research and innovation programme for the development of a hypersonic civil passenger transport aircraft concept, addressed as STRATOFLY MR3, that shall be able to perform cruise at 30 km altitude and Mach 8 flight speed with the aim to drastically reduce transfer time, noise and emissions for long haul point-to-point missions.