While the TSA and FAA do not have specific age-based restrictions on the transport of alcohol in checked luggage—focusing instead on safety rules such as proof limits (nothing over 140 proof) and volume limits (5 liters for 24%–70% ABV)—it is a high-fidelity legal risk for anyone under 21. In the United States, possessing alcohol as a minor is a crime in almost every jurisdiction. If a TSA officer or airline agent discovers alcohol in the bag of a minor, they may notify local law enforcement. Additionally, if your flight is international, customs officials at your destination or upon your return to the U.S. will strictly enforce the legal drinking age. In 2026, it is a high-fidelity "best practice" to avoid carrying alcohol if you are under 21, as the potential legal consequences for "Minor in Possession" far outweigh any convenience, and your "High-Fidelity" record could be impacted by a avoidable citation at the airport.