Nogales International Airport (OLS/KOLS) is a small public-use airport located in Nogales, Arizona, situated near the U.S.-Mexico border. It serves general aviation and limited commercial traffic for the Nogales metropolitan area, which straddles the border with Nogales, Sonora, Mexico. The airport is owned and operated by the City of Nogales and sits at an elevation of approximately 3,955 feet above sea level. Its location in a binational border region gives it strategic importance for regional connectivity, though scheduled commercial airline service has been minimal or absent in recent years. The facility supports general aviation operations, charter flights, and cargo activity tied to the active cross-border trade economy of the Nogales port of entry, one of the busiest land border crossings in the United States.