Libertador Gral D Jose De San Martin Airport — Posadas, Argentina

PSS, Libertador General José de San Martín Airport, serves Posadas, the capital of Misiones Province in northeastern Argentina, near the Paraguayan border. Named after Argentina's founding liberator, PSS connects Posadas to Buenos Aires and functions as a key gateway for travelers heading to the nearby Iguazu Falls region, though Iguazu itself has its own dedicated airport. PSS supports both domestic commercial flights and general aviation tied to the province's yerba mate and forestry industries. The airport's proximity to the Paraná River and the triple border area with Paraguay and Brazil gives it added regional significance for cross-border trade and travel logistics.