There is hydrogen airport infrastructure under development, with this project aiming for commercial flights by 2035: https://aviationsourcenews.com/airport/airb

There is hydrogen airport infrastructure under development, with this project aiming for commercial flights by 2035: https://aviationsourcenews.com/airport/airbus-leads-uk-hydrogen-aviation-initiative-at-gatwick-airport/ https://aviationsourcenews.com/airport/airbus-leads-uk-hydro... But it takes a decade to design and test a new airliner, so of course we should expect to hear mostly about the startups developing planes at this point.