The Airport is divided into two terminals: Terminal 4, Terminal 3. About 75% of passenger traffic at Phoenix Sky Harbor operates from Terminal 4. Most flight connections take place in the same terminal. If you need to transfer between terminals, the PHX Sky Train® provides a quick connection between Terminals 4 and 3. You must exit the sterile (post-security) area in order to access the PHX Sky Train®. There is no way for customers to transfer terminals without exiting security.
Michael Johnson -