The European aviation industry is undergoing a process of liberalisati
on. One of the important lessons of American deregulation was that the
industry is not perfectly contestable. One implication of this is tha
t actual competition on a route is important in order to be able to se
cure the benefits of deregulation or liberalisation. Another is that e
ffective competition policy is important in order to prevent anti-comp
etitive mergers or predatory behaviour. This paper reviews the merger
investigations in European aviation which have accompanied the search
by carriers to secure the benefits of market power, and considers the
extent of route competition within the European Community and its rela
tionship to the different route licensing policies of different nation
al governments. The paper considers the extent of present competition
on the busiest routes, and stresses the importance of cabotage rights
in opening up the European market to effective competition.