Delta Air Lines announced on September 17, 2025, that it is partnering with Munich-based startup Maeve Aerospace to accelerate the development of a hybrid-electric regional airliner. Founded in the Netherlands in 2021 before later relocating to Munich, Germany, Maeve Aerospace is developing the MAEVE Jet MJ 500, a hybrid-electric aircraft for between 75 and 100 passengers. With the MAEVE Jet MJ 500, Maeve Aerospace aims to reduce fuel consumption by up to 40% on regional routes compared to traditional aircraft. According to Delta, the US airline will provide operational expertise to further the development of the MAEVE Jet. So far, no additional details have been shared regarding the specifics of the collaboration and whether Delta Air Lines is also supporting Maeve Aerospace’s project financially.