We can help you with your concerns. Piedmont Triad International Airport Piedmont Triad International Airport is the nearest international airport to Greensboro, North Carolina, located west of Greensboro. The airport code for Piedmont Triad International Airport is GSO. Piedmont Triad International Airport has the following characteristics Location: Piedmont Triad International Airport is located in the center of three major cities, Greensboro, Winston-Salem, and High Point, hence the name "Piedmont Triad Region". The area is approximately 3,770acre (15.2\(km^2\)). Greensboro is the nearest to the Piedmont Triad International Airport in these three cities. Facilities: Piedmont Triad International Airport has one terminal and ...