This flycatcher is endemic to the Pacific lowlands of Mexico's western coast from Sinaloa to western Chiapas, while possibly extending into Guatemala, although this has not been confirmed [REF].
The flammulated flycatcher is listed as being of least concern on the IUCN Red List due to its large range and the belief that the total population numbers over 10,000 individuals; however, no precise estimate on the bird's population exists [REF].