Alcoholic beverages

This regulation controls alcohol consumption on Part 121 airline flights. Passengers may only drink alcohol that the airline serves them—bringing your own alcohol aboard and drinking it is prohibited.

Airlines cannot serve alcohol to anyone who appears intoxicated, is involved in a law enforcement escort situation, or has access to a weapon while on board (such as law enforcement officers). Airlines must also refuse boarding to anyone who appears intoxicated before the flight.

If a passenger refuses to comply with these alcohol rules or causes a disturbance while appearing intoxicated, the airline must report the incident to the FAA within five days.

These rules help maintain safety and order in the cabin by ensuring the airline controls alcohol service and can refuse service when appropriate. The reporting requirement helps the FAA track problem passengers and take enforcement action when necessary.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*