Pré-publication, Document de travail: This paper investigates the relationship between air traffic and economic growth in various developing regions and compares it with an “enduring industry fact” of an elasticity around 2 for the developed world. The analysis is conducted from two distinct databases, both with regional aggregates and with country-level ECM estimations. We conclude that there does not seem to be substantial differences in elasticities across the various regions and we show that the introduction of autonomous country-specific time trends leads to a substantial reduction of elasticity estimates.