This new region would be formed by the West of Argentina and the Metropolitan region of Santiago (de Chile). Airports in both regions are:
West of Argentina:
- Governador Francisco Gabrielli International Airport/El Plumerillo International Airport (one concrete runway, 36/18, 9137ft/2785m).
- Comodoro D. Ricardo Salomón Airport (two asphalt runways, 09/27 and 14/32, 4754ft/1450m and 9108ft/2778m respectively).
- Domingo Faustino Sarmiento Airport (one asphalt runway, 18/36, 8066ft/2460m).
Metropolitan region of Chile:
- Comodoro Arturo Merino Benítez International Airport (two asphalt runways, 17L/35R and 17R/35L, 12298ft/3748m and 12467ft/3800m respectively).
- Alberto Santos Dúmont Airfield (one earth runway, 18/36, 1380ft/421m).
- El Bosque Air Base (one concrete runway, 03/21, 6024ft/1836m).
- Chicureo Airfield (one asphalt runway, 05/23, 2755ft/840m).
- Curacaví Airfield (one earth runway, 10/28, 2296ft/700m).
- El Alba Airfield (one grass runway, 09/27, 1673/519m).
- El Corte Airfield (one runway, 11/29, 1640ft/500m).
- El Principal Airfield (one earth runway, 07/25, 1738ft/530m).
- Estero Seco Airfield (one grass runway, 16/34, 2798ft/853m).
- Entre Ríos Airfield (one earth runway, 09/27, 1500ft/457m).
- Eulogio Sánchez Airfield (one asphalt runway, 01/19, 3281ft/1000m).
- Hacienda Lipangue Airfield (one earth runway, 05/23, 2575ft/785m).
- Juan Enrique Airfield (one earth runway, 18/36, 1945ft/593m).
- La Victoria de Chacabuco Airfield (one earth runway, 03/21, 2952ft/900m).
- Lipangui Airfield (one earth runway, 16/34, 1476ft/450m).
- Los Cuatro Diablos Airfield (one earth runway, 08/26, 1837ft/560m).
- Mansel Airfield (one grass runway, 15/33, 2140ft/652m).
- Melipilla Airfield (one earth runway, 08/26, 1745ft/532m).
- Vitacura Municipal Airport (one asphalt runway, 07/25, 1804ft/550m).
- San Alfonso Airfield (one earth runway, 07/25, 2296ft/700m).
- Santa Teresa del Almendral Airfield (one runway, 01/19, 2624ft/800m).
- Verfrut Airfield (one earth runway, 16/34, 2755ft/840m).
- Viña Tarapacá Airfield (one asphalt runway, 09/27, 2181ft/665m).