Sint-Truiden / Brustem Airfield is an airfield located in Brustem, 1.5 nautical miles southeast of Sint-Truiden (Limburg) and approximately 37 mi (60 km) east of Brussels. Formerly known as Sint-Truiden Air Base or Brustem Air Base, the aerodrome was deactivated as a Belgian Air Component base in 1996.

Sint-Truiden is a city and municipality located in the province of Limburg, Flemish Region, Belgium, and has over 41,500 inhabitants, which makes it one of the largest cities in Limburg. The municipality includes the former communes of Aalst, Brustem, Duras, Engelmanshoven, Gelinden, Gorsem, Groot-Gelmen, Halmaal, Kerkom-bij-Sint-Truiden, Melveren, Metsteren, Ordingen, Runkelen, Velm, Wilderen, and Zepperen.