How long does a flea life cycle take?

The duration of a flea life cycle is not fixed; it varies significantly depending on the specific species and environmental conditions. Generally, the time required to complete the four life stages—egg, larva, pupa, and adult—ranges from two weeks to several months.1

The pupal stage is particularly variable, as some species can enter an arrested state of development, remaining in the cocoon for months until a host is detected. Additionally, the adult life span itself can range from a few weeks to over a year, depending on the species.1