How is runway use determined at SAT?
SAT Runway use is determined by several factors including safety, weather, traffic demand, runway capacity, aircraft destination, runway length requirements, and prescribed runway use procedures. Air Traffic Control (ATC) assigns runway use with consideration to all of these factors. Capacity needs at SAT require ATC to use two runways (RWY 12R/30L, RWY 3/21) during much of the day.
