Collaborating with local governments to create urban air mobility solutions, such as electric air taxis for short-haul trips, can reduce the reliance on traditional trans

Ask gold members how much luggage they plan to bring to plan for correct weights. A lot of business travels include 3 checked bags but the majority flies with handluggage

Use modern IT to implement dynamic codesharing, providing an interline journey following an optimized flight plan, rather than a static agreement.

Implement sharkskin technology or (my own) coating to reduce air resistance and micro-drag from the fuselage.

Collaborate with public transport companies at popular destinations to reduce car usage.

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.