what size containers can you take on a plane
The 3-1-1 rule is a handy way to remember what quantity of liquids, gels or aerosols TSA permits on a plane. The 3 indicates that each individual bottle of liquid should be 3.4 ounces (100 ml) or less. Even if the bottle is only half full, the size of the bottle, not the amount of liquid present, is what determines whether it is acceptable.