Phoenix Sky Harbor International Airport's (PHX) Terminal 3 is home to Frontier Airlines, which provides passengers with a quick and easy domestic and connecting flight experience. Frontier Airlines PHX Terminal offers access to many places from the center of Phoenix, and is well-known for its inexpensive tickets and affordable travel options. Recently refurbished with contemporary conveniences and efficient services, Terminal 3 guarantees travelers a seamless check-in, security, and boarding experience. Knowing how Frontier's terminal operates at PHX will help you have a stress-free and organized trip, whether you're arriving or leaving.