Phlias (also Phlius or Phliasus; Ancient Greek: Φλίας) was an Argonaut from Araithyrea in Argolis, eponym of the town of Phlius near Sicyon. Genealogies make him son of Dionysus by Ariadne or by Araethyrea daughter of Aras; Pausanias also records a rival father Ceisus. He married Chthonophyle and fathered Androdamas.
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I.Family and eponym
Hyginus calls him Phliasus, son of Liber (Dionysus) and Ariadne. Pausanias prefers Dionysus by Araethyrea, daughter of Aras, while noting a version that made Ceisus the father; in Pausanias' own account Chthonophyle is Phlias' wife and mother of Androdamas. The Orphic Argonautica says only that his mother was a nymph, unnamed.
The town of Phlius — formerly Araithyrea — was believed to have taken its name from him, anchoring the Argonaut in the Sicyonian–Argive borderland.
II.Among the Argonauts
Apollonius of Rhodes names Phlias among the Peloponnesian crew; Valerius Flaccus and Hyginus likewise count him on the Argo. He has no separate Colchian adventure in the surviving poems — his fame rests on Dionysiac parentage, the city eponym, and his place in the muster-roll.