Electric propulsion would eliminate the local environmental impact of emissions justification for the short-haul flight bans that are floated and/or implemented [1] from time to time in Europe. It makes sense to spray less jet/avgas exhaust when possible. Of course, if the ban reasons include noise abatement or evil conspiratorial machinations, they're still on the table ;)
Even then there are lots of flights in Europe that are between cities less than 1 hour apart.
This idea generally makes more sense in Europe than the US, I think.