This document summarizes international aircraft operations and procedures for operating in the European Union. It discusses considerations for outbound flights from the US such as documentation requirements. It also discusses considerations for inbound flights to Europe such as higher fuel costs, payment methods, and obtaining overflight and landing rights. Finally, it explains the differences between cabotage (commercial domestic flights within a country) and importation for operating an aircraft in Europe. Penalties for unauthorized cabotage include customs duties and impoundment.