State intervention in air transport is omnipresent. Airlines, in particular, are major beneficiaries of State aid. This book provides a comprehensive analysis of the law regulating State aids to airlines, which includes sections on Articles 107 TFEU and 108 TFEU as well as an overview of legal issues raised by air transport and competition in the EU, in particular deregulation and its consequences. EU Law on State Aid to Airlines follows a multi-disciplinary approach by relying on the fundamental concepts of economics and policy analysis. This approach allows grasping the wider implications of this sector's issues for the field of State Aid, in particular in the light of the 'more economic approach' and the 'balancing test'. Furthermore, additional perspective is given on State aid law in the air transport sector through comparative analyses of regulations in the United States and Switzerland and outlooks on international relations. Finally, the book presents a number of recent Commission decisions with a dramatic importance for the air transport, with the opening of formal investigation procedures regarding alleged State aid to low-cost airlines operating from regional airports all over Europe. Magnus Schmauch is Legal Secretary at the EFTA Court in the Chambers of judge Pall Hreinsson. Previous experience includes four years as a lawyer at the Court of Justice of the European Union. He has published a large number of articles on State aid and other fields of EU law and teaches on EU law and fundamental rights at the University of Lund, Sweden.