How about using battery powered aeroplanes for shorter trips, and solar powered airships for longer distances? Bear in mind that the first electricity powered flight was an airship: "In 1883 the first electric-powered flight was made by Gaston Tissandier, who fitted a 1.5 hp (1.1 kW) Siemens electric motor to an airship."[0] And we also have solar powered airships which can stay in the air for 6 months at time now[1].

[0] https://en.wikipedia.org/wiki/Airship

[1] https://www.sciencealert.com/this-gigantic-chinese-airship-f...