Mariscal Lamar Airport — Cuenca, Ecuador

Honoring Jose de La Mar, a Cuenca-born military leader who later served as President of Peru, Mariscal Lamar Airport carries the code CUE and serves Ecuador's third-largest city from a high Andean valley roughly 2,500 meters above sea level. Cuenca's UNESCO-listed colonial center, known for its river-lined promenades and Panama-hat workshops, draws a steady stream of retirees and tourists who arrive through this compact single-runway facility. Thin mountain air at this altitude affects aircraft performance, limiting some larger jets, while domestic carriers maintain frequent connections to Quito and Guayaquil.