Make the trip not just climate neutral, but climate positive by compensating with 2x biochard. Fly shame to fly pride!

In Plus and Business on long haul - hand out amenity kits by request instead of placing them on all seats.

Use travellers feces from flights as a bioproduct. As fuel or to something else useful.

Create an ability to share a seat in your car with other passengers on the flight. It's better than everyone riding their car.

Veggie first airline should be implemented. Not only for Sustainability reason, also to meet the modern traveler expectations

More efficient engines using sustainable aviation fuels combined with optimised flight paths and reduced taxiing time. Only use digital tickets.