Planning to fly with Delta Airlines from Phoenix Sky Harbor International Airport? Wondering what terminal is Delta Airlines at PHX? Delta operates out of Terminal 3, officially known as the John S. McCain III Terminal. This terminal is known for its modern amenities, streamlined check-in process, and convenient access to gates and baggage claim. Terminal 3 at PHX offers a smooth travel experience with fewer crowds compared to Terminal 4. Delta passengers can enjoy self-service kiosks, efficient security screening, and a variety of dining and shopping options nearby. Whether you’re arriving for a domestic flight or connecting to another city, knowing what terminal is Delta Airlines at PHX can save you valuable time.