San Luis Airport — Ipiales, Colombia

IPI is the code for San Luis Airport, serving Ipiales, a Colombian city near the Ecuadorian border famous for the striking neo-Gothic Las Lajas Sanctuary built into a river gorge. The airport supports both religious tourism from pilgrims visiting the sanctuary and cross-border trade and travel given Ipiales's position on a major overland route between Colombia and Ecuador. High-altitude conditions in this Andean region shape flight operations, and IPI primarily handles domestic connections to cities like Bogotá and Cali rather than international routes. Ipiales itself functions as a bustling commercial border town, with the airport providing a faster alternative to overland travel through the sometimes congested Rumichaca border crossing.