The last two decades have witnessed remarkable changes in European aviation, the consequence of a series of inter-related, largely symbiotic developments. These include: airline de-regulation; the use of information technology and the internet; new managerial approaches (product unbundling and differentiation) and the commercialisation of the airport industry. The developments were symbiotic not least because de-regulation encouraged competition and entrepreneurial activity, which in turn stimulated new technology and managerial innovation; substantial increases in productivity leading to a marked fall in the real cost of air travel across a hugely expanded network of services, has been the outcome.