Lieutenant Colonel Luis A. Mantilla International Airport — Tulcán, Ecuador

Lieutenant Colonel Luis A. Mantilla International Airport, identified by the code TUA, serves Tulcan, a city in northern Ecuador situated near the border with Colombia. Despite its international designation, TUA primarily handles domestic Ecuadorian routes, connecting Tulcan to Quito and other cities, while also serving cross-border travelers heading toward Ipiales in Colombia. The airport sits at a high elevation typical of Ecuador's Andean region, requiring performance considerations for aircraft operating from its single runway. Tulcan is known for its unique topiary garden cemetery and proximity to the Rumichaca border crossing, making TUA a practical entry point for travelers exploring this binational frontier zone between Ecuador and Colombia.