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

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

International ban on private jets. Everyone can fly commercial. With option like business and first class this should be achievable if all nations want to reduce emission

Better lights on scanners for self check in at BGO and others. Making it easier and faster to scan QR codes from phone

Include meal information as early as possible in-app.
This is good for people with allergies, so they abstain from it.

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.