Eastern and south-eastern Bolivia, south-eastern and southern Brazil, Paraguay and northern Argentina. Winters north to Panama, Colombia and French Guiana.
 
Population
Estimated population is unknown (2010).
Sick's Swift (Chaetura meridionalis) [XC45241]
by Bernabe Lopez-Lanus from Vargem Grande - Teres\u00f3polis - RJ, Brazil (flight call)
Sick's Swift (Chaetura meridionalis) [XC216124]
by Fernando Igor de Godoy from Get\u00falio Vargas, Get\u00falio Vargas, Rio Grande do Sul, Brazil (flight call, song)
Subspecies
Chaetura Andrei (Sibley and Monroe 1990, 1993) has been split into Southern Swift (Chaetura meridionalis) with the remainder lumped with Vaux's Swift (Chaetura vauxi) (Sibley and Monroe 1990, 1993) following SACC (2005).
Considered by some authors to be a subspecies of Ashy-tailed Swift (Chaetura andrei).