Fill up empty seats by selling affordable return trips to unknown/secret destinations. Pick the destinations among those that have low occupancy close to departure time.

For hand wash tissues, hand out from a larger container instead of singles wrapped in plastic.

A lot of ground equipment is still driven by internal combustion engines, and can be upgraded to run on electric instead for better efficiency.

Offer Eurobonus points to passengers who order vegetarian/vegan food in advance

Encourage food suppliers and distributors to use more sustainable and healthy packaging in the food that gets served.

Launch selected green flight departures with bio ticket options only, giving double EB points and double conscious traveler steps to reward collective consciousness.