I try t make my contribution by choosing Airlines that have an ethical policy for the environment, as well as Airports & the planes themselves.
Flying new aircraft lessens the carbon footprint by approx 25%, Aircraft with winglets added save 3% fuel. KLM for eg recycle 90% of all on board paper, recycle when collecting all service items at the trolley ready for collection. They also have steeper take off policies to save fuel, & non use of reverse engines on landing .
Schipol has variable runways, to balance the noise & damage to The locality, solar or electric charged powered steps & vehicles.
Who you choose to fly, & which aircraft means you support or don’t, a business & their efforts.