The airline industry is expected to be one of the industries which struggles most with moving towards a more sustainable future. This is in part due to the fact that the specific energy of batteries is too low for longer distance flights. Weight is a much more significant factor for aircraft compared to cars or ships. Hydrogen has a higher specific energy than jet fuel but it comes with it's own engineering and operational challenges.

Airbus is investing in research into hydrogen fuel as a possible alternative: https://www.airbus.com/en/innovation/low-carbon-aviation/hydrogen/zeroe . They expect to release their first commercial hydrogen aircraft in 2035.

This question regards new aircraft being produced and entering the market. If the majority of the global fleet is not hydrogen fueled but the majority of new additions to this fleet is the question will resolve YES. If the majority of new aircraft sold in 2050 is not hydrogen fueled it will resolve NO.