Frontier Airlines PHK Terminal operates from Terminal 3 at Phoenix Sky Harbor International Airport (PHX). The terminal offers essential services like dining, shopping, and self-check-in kiosks. Frontier, known for its ultra-low-cost model, provides budget-friendly flights with additional fees for baggage, seat selection, and other extras. https://www.airportsterminalsme.com/frontier-airlines/frontier-airlines-phx-terminal-phoenix-sky-harbor-international-airport/