In small airports, like Vigra, where there only 1 or 2 airplanes stand, have roofs like carports to prevent snow on plane. This will reduce amount of deicing fluid needed.

Charging mobile phones or other equipment from sunlight in the sky. «Day flights are always sunny»

Long time ago SAS had a shared limousine service in Sweden. For a resonable price, a stretched Volvo picked you up, and a few more passengers.

Allow users to visualise their travel carbon footprint in-app. Include everything such as transportation to/from the home and destination, hotels.

Switching to edible cutlery on SAS reduces waste and offers a unique, eco-friendly experience, enhancing meals while benefiting the environment.

Incentivize sustainable behavior, e.g. a small reward for bringing your own coffee cup. This can also be sold by SAS in the Eurobonus store or in flight.