Tres De Mayo Airport — Puerto Asís, Colombia

Tres De Mayo Airport, identified by the code PUU, serves Puerto Asís in the Putumayo department of southern Colombia, a region near the Ecuadorian border shaped by dense Amazonian rainforest. Given the challenging overland travel through this jungle terrain, PUU functions as a vital connection point for Puerto Asís to the rest of Colombia, supporting both passenger flights and cargo tied to agriculture and regional commerce. The airport has also seen relevance connected to Colombia's historical oil industry presence in Putumayo. PUU's role reflects the broader pattern of small Colombian airports serving as essential lifelines for remote departments where road infrastructure remains underdeveloped.