You are allowed to take 3 oz of water, juice, alcohol or any other liquid on board if you put it in 3-oz bottles and place them in a plastic bag. The employees will calculate the volume of liquid: if you have two half-full 3-oz bottles, they will be calculated as 6 oz.

The only exception is baby food. It can be transported in large amounts, but only if you are traveling with a child. Please don’t drink your alcohol during the flight, it is prohibited. This rule is quite reasonable: a drunk passenger presents a great danger to other passengers and the crew.