Include BIO-tickets in Friends & Family campaigns.

In a week/ some days before a flight, do sell “stand by tickets”, to a cost of approx. Euro 50 in Europa, Euro 200 intercontinental, , to increase the cabin factor.

Using hydrogen tanks in the rear of the plane, for example. This could work on shorter routes such as domestic flights or intra-Europe.

Reduce the amount of items on meal trays. Stock to the main and a piece of bread or a salad. No need for all these extra individually wrapped items, dessert etc.

For flights with a lot of empty seats, open more award seats short time before departure.

Use larger packages for the most consumed drinks, instead of handing out endless amounts of cans (less garbage, less weight on board) .