frontier terminal phx, often referred to as America’s Friendliest Airport®, serves as a major hub for travelers in the southwestern United States. Among its multiple terminals, Terminal 3 (also known as the John S. McCain III Terminal) is where Frontier Airlines operates. Known for its budget-friendly fares and straightforward services, Frontier Airlines caters to travelers looking for affordable and convenient options. This blog takes a closer look at the Frontier Airlines experience at PHX and what travelers can expect from this terminal.