I would use my skills in optimization and deep learning to learn what frequenzies and time schedules that maximizes the load factor of each aircraft in the fleet.

Implement biometric boarding and baggage tracking using facial recognition and RFID for faster boarding, reduced delays, and improved efficiency.

Encourage food suppliers and distributors to use more sustainable and healthy packaging in the food that gets served.

Work together with other airlines/partners to pool up purchases of Sustainable Aviation Fuel.

More efficient and simple airports generates lower airport taxes. Upside, overall cost WITH Biofuel ticketing acceptable.

Implement the potential to offset carbon footprint by CDR technologies like enhanced rock weathering;