Yes, you absolutely need a valid government-issued photo ID to fly on a private jet, and as of May 7, 2025, this ID must be REAL ID-compliant for domestic flights within the United States. While private jet travel offers the luxury of skipping the main terminal lines and TSA "security theater," Part 135 charter operators are still federally mandated to verify the identity of every passenger against a manifest. For international private flights, a valid passport is mandatory, and you must still clear customs and immigration, though this usually happens in a much faster, private facility known as an FBO (Fixed Base Operator). The pilot or a flight concierge will typically check your ID before you board the aircraft to ensure it matches the pre-filed passenger list. If you are 18 or older and fail to present a compliant ID (such as a star-marked driver's license, passport, or Global Entry card), you can be denied boarding just as you would on a commercial flight.