Sofia Airport has been awarded a Level 4 certificate for reducing carbon emissions (Airport Carbon Accredited Level IV – Transformation), announced the concessionaire company. This places Sofia Airport among only eight other European airports with this accreditation, including Istanbul's new airport and the Parisian airports Charles de Gaulle, Bourget, and Orly, as well as Marseille, Zurich, London-Luton, and Basel.
The accreditation is determined by the European airport association ACI EUROPE, with the highest rating being Level 5....