Cibao International Airport (IATA: STI, ICAO: MDST) serves Santiago de los Caballeros, the second-largest city in the Dominican Republic and the commercial hub of the Cibao region. It provides an important alternative to Las Américas International Airport in Santo Domingo, offering direct international connections primarily to North America and the Caribbean. The airport handles a significant volume of diaspora traffic, particularly to and from the United States, as a large Dominican community resides in cities such as New York and Boston. It supports both scheduled commercial flights and charter operations, with capacity to serve wide-body aircraft. Infrastructure improvements over the years have expanded its passenger handling capabilities, reflecting Santiago's growing economic importance and tourism potential in the interior of the country.