Wonder if this route would be perfect for an electric helicopter? It's a pretty short trip (8mins?), and it could charge while people load/unload? Not sure if the tech is mature just yet of course...
The Sikorsky Firefly is a one-passenger electric helicopter, one of not that many electric helicopters, with a max takeoff weight of about 2K lbs, a little more than one pilot's worth of weight between MTW and its empty weight (no passengers). Over half its weight, 1150 out of 2050 lbs, is comprised of its two batteries, burning up to 140kW for 15 minutes max (IE, not flying like Airwolf).
So the technology is there to make the electric flight about one way before a long recharge with one very wealthy passenger and no cargo provided the passenger is the pilot, presuming the batteries are replaced regularly and it's not too cold.
Maybe they should use solar paneling for the rotor blades? ;)
https://evtol.news/aircraft/sikorsky-firefly/ http://www.flugzeuginfo.net/acdata_php/acdata_s61n_en.php