can you bring drinks on a plane? Carry-on Liquids The Transportation Security Administration (TSA) enforces the "3-1-1" rule for liquids in carry-on bags. Each passenger is allowed to bring a quart-sized bag containing containers of liquids, gels, creams, and pastes, each of which must be 3.4 ounces (100 milliliters) or less. This rule applies to all beverages, including water, juice, and other drinks. https://justtravo.com/blog/can-you-bring-drinks-on-a-plane/