The process was stress-free because passport control and security were well-run. With plenty of space, free Wi-Fi, and a decent assortment of dining and shopping options, the airport was spotless. The boarding process was well-organized and punctual. All things considered, the United Airlines ATH Terminal offered a dependable and cozy setting, which made it an excellent place to begin my journey to the United States. Arriving at least three hours before to your flight is advised for international departures from the United Airlines ATH Terminal for passengers heading to the United States, this provides ample time for check-in, baggage drop, security screening, passport control, and any other document checks that may be necessary. Early arrival guarantees a stress-free, seamless experience at the United Airlines ATH Terminal, which can get crowded during peak hours.