Flying with Delta 10 gummies is a legal "gray area" that carries significant risk, and generally, it is not recommended. While Delta 10 is derived from hemp and is technically legal at the federal level under the 2018 Farm Bill (provided it contains less than 0.3% Delta 9 THC), the TSA is a federal agency that follows federal law. TSA’s primary focus is on safety and security, not searching for drugs; however, if an officer discovers a substance that appears to be a controlled substance during screening, they are required by law to refer the matter to local law enforcement. Police officers at the airport may not have the field-testing equipment to distinguish between legal Delta 10 and illegal Delta 9 THC, which could lead to detention, confiscation, or even arrest. Furthermore, state laws regarding hemp-derived cannabinoids vary wildly; even if your departure state allows it, your destination state or any "layover" state might have strict bans on Delta 10. For international travel, the answer is a definitive no, as many countries have zero-tolerance drug laws that do not distinguish between different types of THC, potentially leading to severe criminal penalties.