KSGJ is the ICAO code for Northeast Florida Regional Airport (IATA UST), located in St Augustine, FL.
Northeast Florida Regional Airport (KSGJ) is a medium airport in St Augustine, FL. Pilots and dispatchers reference it by ICAO code KSGJ or IATA code UST. It sits in North America.
Northeast Florida Regional Airport is a regional commercial airport that doubles as a busy private-aviation base. Operators benefit from full instrument approaches and an FBO infrastructure scaled for regular jet traffic, often without the congestion of the nearest major hub.
The longest runway measures 8,001 ft (2,439 m), a heavy-class field. Representative aircraft that operate comfortably here include the Gulfstream G550, Falcon 7X, and Bombardier Global 5500. In practice this most heavy and super-midsize jets operate here without restriction.
Northeast Florida Regional Airport sits near sea level at 10 ft.
Local operations run on America/New_York. Scheduled airline service is light enough that it rarely interferes with charter movements, though planners should still expect to coordinate with the handling agent for international turnarounds.
SkyAccess currently tracks 122 departing and 283 arriving private-jet legs at KSGJ across the next six months of operator inventory. 22 charter operators have run trips through this field in our recent inventory window.
Regional fields like KSGJ are a meaningful share of US private aviation — closer to the trip's actual origin or destination than the nearest major hub, with shorter ramp-to-cabin times that are the main reason owners and brokers prefer them.