When travelers ask, What terminal is Delta Airlines at FCO the answer is Terminal 3 (T3) at the Leonardo da Vinci–Fiumicino Airport in Rome, Italy. Terminal 3 is the main hub for most international and intercontinental flights, making it the ideal base for Delta’s operations between the United States and Italy. This terminal is designed with a focus on comfort, efficiency, and convenience, offering passengers an enhanced travel experience right from check-in to boarding.