Piedmont Triad International Airport is an airport located in unincorporated Guilford County, North Carolina, west of Greensboro, serving the Piedmont Triad region of Greensboro, High Point and Winston-Salem as well as the entire Piedmont Triad region in North Carolina, United States. The airport, located just off Bryan Boulevard, sits on a 3,770 acre ca…Piedmont Triad International Airport is an airport located in unincorporated Guilford County, North Carolina, west of Greensboro, serving the Piedmont Triad region of Greensboro, High Point and Winston-Salem as well as the entire Piedmont Triad region in North Carolina, United States. The airport, located just off Bryan Boulevard, sits on a 3,770 acre campus and has three runways. It is the third busiest airport in North Carolina, averaging 280 takeoffs and landings each day. As of 2025, GSO ranks 103rd in passenger arrivals and departures in the US, offering passenger service to 14 U.S. destinations. PTI is owned and operated by the Piedmont Triad Airport Authority.