Tepui Swift occurs in the pantepui region of southern Venezuela and adjacent northernmost Brazil, and western Guyana (Collins 1972, Sick 1993, Braun et al. 2003, Hilty 2003). It is assumed to be resident in this region. There also is a documented record (specimen; February) from the Rancho Grande Biological Station, Aragua, in the coastal mountains of northern Venezuela (Collins 1972); it is not known whether this represents a vagrant, or whether Tepui Swift regularly disperses as far as northern Venezuela.
Tepui Swift primarily occurs at 200-2200, occasionally to as high as 2600 m (Hilty 2003).