The San Isidro Air Base (Spanish: Base Aérea de San Isidro) (ICAO: MDSI) became operational on March 23, 1953 and is located 25 km east of Santo Domingo. It was named Base Aérea Trujillo until 1961, when the name was changed to San Isidro. Most of the units, aircraft, and helicopters of the Dominican Air Force are based there.

San Isidro Air Base Base Aérea de San Isidro
IATA: none ICAO: MDSI
Summary
Airport type	Military
Operator	Dominican Air Force
Built	1953
Occupants	Comando Aéreo
Elevation AMSL	112 ft / 34 m
Coordinates	18°30′10″N 69°45′45″W / 18.50278°N 69.76250°W / 18.50278; -69.76250
Map
SLRX Location of the airport in the Dominican Republic
Runways
Direction Length Surface m ft 03/21 2,134 7,000 Asphalt
Source: GCM[1] Google Maps[2]

The San Isidro track also has been a venue for automobile racing events.

The Punta Caucedo VOR/DME (Ident: CDO) is located 6.8 nautical miles (12.6 km) west of the airport. The San Isidro VOR/DME (Ident: SIS) is located on the field.^[3][4]