Vueling, an airline of IAG group, has completed the airline’s first flight using sustainable fuel, on the Barcelona-Seville route. Repsol, a pioneer in the manufacture of these kind of fuels in Spain, has supplied the SAF (Sustainable Aviation Fuels) used in the flight, produced at its Tarragona Industrial Complex using biomass. The company has also produced a similar batch at the refinery in Puertollano and another one, from waste, at the Petronor refinery, a Repsol Group facility located in Bilbao. The plane took off from the Josep Tarradellas Barcelona - El Prat airport at 9:10 a.m. and landed in Seville. In addition, today the global transition to zero-emission transport is being debated at the COP26 Climate Change Conference in Glasgow. Vueling believes that governments should encourage research and development of these types of fuels to accelerate its use and its results can be immediate. Vueling has carried out a number of initiatives to reduce its emissions as much as possible since 2012. The aircraft, which has covered the 820 kilometers from Barcelona to Seville, has avoided the emission of around 63 kg of CO2 thanks to weight reduction initiatives.For example, Vueling has replaced all the seats in its fleet with a new, lighter model, the Slim Seats, and it has digitalized all the documentation on its aircraft, eliminating 75 kg of paper per flight. Additionally, the company’s pilots carry out a series of operational efficiency measures such as optimal flap configuration (ailerons whose function is to increase the aircraft’s lift at low speeds), applying an optimal flight level and speed, as well as other initiatives that allowed today’s flight to reduce 81 kg of CO2 emissions.