100mlThe main rule to remember is that you must not take any more than 100ml of a restricted liquid into the cabin of a plane, and those liquids should be placed into individual 100ml containers. Any liquid that you need more than 100ml of should be packed in your hold luggage. “Liquids” include: Drinks.
Can I take liquids on international flights?
Liquid, aerosol or gel items must be in containers of 100 millilitres (volume), 100 grams (weight) or less. Containers must fit into one transparent and re-sealable plastic bag like a snap-lock sandwich bag. The four sides of the bag's sealed area must add up to no more than 80 centimetres (e.g. 20×20 cm or 15×25 cm).