But what if a future flight between Barcelona and Ibiza could be made without conventional aviation fuel? A short connection between mainland Spain and a nearby island could potentially suit an electric aircraft, provided the final aircraft range, passenger load and certification requirements allow it. In 2021, the airlines joined aviation technology company Dante Aeronautical in a project to develop a 100 per cent electric aircraft by converting existing planes. Barcelona and Ibiza are the kind of destinations that demonstrate why short-range electric aviation is being explored. But Spain’s short domestic routes could eventually provide one of the first practical testing grounds for electric passenger aviation.