Parnaíba - Prefeito Doutor João Silva Filho International Airport — Parnaíba, Brazil

PHB designates Parnaíba International Airport, formally Prefeito Doutor João Silva Filho International Airport, serving the coastal city of Parnaíba in Piauí state, Brazil. Despite its international designation, PHB primarily handles domestic flights linking Parnaíba to major Brazilian cities, supporting tourism to the Parnaíba Delta, one of the largest river deltas in the Americas, and nearby Lençóis Maranhenses dune fields. The airport serves as a key gateway for eco-tourism in the region, with visitors using it to access delta boat tours and coastal attractions. PHB's terminal and single runway accommodate narrow-body jets typical of Brazilian domestic carriers, and passenger numbers rise notably during peak tourist seasons.