Measuring the economic effects of bilateral liberalization air transport

This paper develops a model that measures the equilibrium changes and welfare consequences of liberalizing the fare, entry and service levels of a bilateral air transport agreement. The model also provides measures of the distribution of gains and losses across the consumers and airlines of each country involved in the bilateral as well as those of any third foreign country that may be affected through traffic diversion as a result of changes in the bilateral. In our model, service quality aspects are treated in the framework of hedonic price theory by specifying the quality-adjusted price (quantity) as a multiplication of the observed price (quantity) by the reciprocal quality index function (the quality index function). The model is illustrated using the Canada–Japan bilateral to assess alternative combinations of changes to fare, frequency and entry restrictions. We report the outcomes for market share, airline profits, fares and consumer welfare.