Full refund for flights (whatever booking class) if travel changed to railway X number days in advance for domestic journeys in Norway between OSL and BGO, SVG or TRD.

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.

Collect food waste separately, return as food for the animal farms supplying the meals, creating a true circular supply chain.

For meals, have condiments provided by request, and not automatically given to passengers. So many food items are unnecessarily thrown away.

Motivate and educate travelers and employees more on how to travel more environmental friendly, and illustrate the benefits of choosing the path towards sustainability.

Sell tickets without any luggage.