When it comes to your carry on, you're allowed to bring smaller bottles of alcohol but they need to “comfortably fit into a single quart-sized bag,” TSA notes. Once your alcohol is in your carry on, it should stay there.

You can only bring a bottle of rum in your carry-on in 2026 if it meets one of two very specific criteria. First, if you are bringing it through the main security checkpoint, it must be in a container of 100ml (3.4 oz) or less and fit inside your single quart-sized clear plastic bag. A standard 750ml bottle of rum is strictly prohibited and will be confiscated. Second, you can bring a full-sized bottle of rum if you purchase it at a Duty-Free shop after passing through security. In 2026, these bottles must be placed in a Security Tamper-Evident Bag (STEB) by the retailer, and the receipt must be visible inside. If you have a connecting flight, especially in the US or EU, you must keep the bag sealed until you reach your final destination. Note that FAA and international regulations in 2026 strictly forbid you from consuming your own rum during the flight; all alcohol consumed on board must be served by the flight attendants to comply with safety and intoxication laws.