Cycling is ten times more important than electric cars for reaching net-zero cities
(theconversation.com)
Maybe? I'm not an aerospace engineer, but everything I've read indicates that the weight of the batteries would prevent airplanes from transitioning because it would be too much of a trade-off. Hybrid airplanes seem promising, but I've seen numbers from 5% reduced fuel (not meaningful) to 40% or more (seems a bit too optimistic).
Better battery tech is coming (Toyota claims as early as 2027), so maybe that will improve the outlook for electric airplanes.
Even if we had better battery tech today, it would still take years for airplanes to incorporate it properly. So I think we should be building out better rail systems. We have that tech now, and we'll want it even if we have electric planes.