The main terminal for Frontier Airlines PHX Terminal‘ flights is Terminal 3 at Phoenix Sky Harbor International Airport (PHX). Travelers can have a comfortable and efficient experience at Terminal 3, also referred to as the John S. McCain III Terminal. Quick security checkpoints, self-service kiosks, and efficient check-in counters are available to Frontier Airlines passengers. Dining options, shops, and cozy seating places are just a few of the terminal’s many facilities. Additionally available to travelers are baggage services, free Wi-Fi, and charging stations. Travelers on a tight budget frequently choose Frontier Airlines since it offers reasonably priced flights to many locations throughout the United States. Arriving early is advised for check-in, and you can check flight details on the airport’s website or with Frontier Airlines.