Find ways to allow tax-free purchases to be done in departing airport and to be picked up at the airport were I land. It could save a lot of weigh/fuel.

Voluntary fee of 5 cent/mile that goes to research and developement all electrical passenger airplanes. The aircompany gives another 5 cent per same miles.

I would use my skills in optimization and deep learning to learn what frequenzies and time schedules that maximizes the load factor of each aircraft in the fleet.

Waste reduction challenge: Launch an in-flight competition where the flight producing the least waste per passenger wins a sustainability award

In small airports, like Vigra, where there only 1 or 2 airplanes stand, have roofs like carports to prevent snow on plane. This will reduce amount of deicing fluid needed.

On your flights, start sharing how much of that flight is powered by biofuel purchased by customers flying.