Revision with unchanged content. Nowadays Enterprise Risk Management (ERM) becomes focus point in the successful airport and airline business across the world. The model suggestion is created of ERM about airport business as optimal framework to ERM implementation. Applicability assessment and current situation in the TAV Airports Holding at Turkey are reviewed about model suggestion with coordinated efforts. Enterprise risk optimization (ERO) is considered as building stone to establish ERM and its implementation. In this book, ERO model is deal with solving "how is optimal risk amount determine?" main question. In this concept, New Risk Score formula is created by author. The book is organized into VI chapters. Chapter I, Airport business fundamentals are changes are presented. Chapter 2 is detailed explanation of necessity of enterprise risk management to airport and airline business management. Chapter 3, is consist of researching to Enterprise Risk Management Perceptions and Approaches in Airports of Turkey. Chapter 4 is including to Applicability Analysis of ERM at Turkey Airport Business. Chapter 5 is present new airport enterprise risk management model with framework model, information flow system model, organization model for TAV Airport Holding. The Holding has best ERM substructure and capability in the Turkey. Chapter 6, are offer ERO Model and its application to the TAV Airport Holding.