Unlike many countries that have a formal "exit" booth with a physical stamp, the United States utilizes a "biometric exit" and data-sharing system instead of a central exit checkpoint. When you check in for an international flight, the airline electronically transmits your passenger data and passport information to U.S. Customs and Border Protection (CBP). In 2026, this has been enhanced with facial recognition technology at most major boarding gates, which automatically records your departure in the federal database. This "invisible" process reduces airport congestion and allows the government to track visa overstays without the need for additional physical infrastructure. If you are a non-citizen, your departure is automatically linked to your I-94 arrival record, closing the loop on your visit electronically the moment your plane's manifest is finalized and the aircraft departs.