The positive impact of air transport liberalization as suggested by economic theories and empirical studies has inspired many developing countries like Nigeria to liberalize some of its Air Service Agreements (ASAs). This paper seeks to examine the extent to which international air service liberalization has impacted upon Nigeria ten years after it was introduced. The research developed a cross-sectional model with passenger traffic as the dependent variable, while macroeconomic factors (trade and GDP), historical links, distance and ASAs served as independent or predictor variables. The analysis revealed a set of ASA stages in the country’s policy-making process.
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