what size liquid can you take on a plane

You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams, and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item. Placing these items in the small bag and separating them from your carry-on baggage facilitates the screening process. Any liquid, aerosol, gel, cream, or paste that alarms during screening will require additional screening. Its recommended to pack all liquids, gels, and aerosols that are over 3.4 ounces or 100 milliliters in your checked baggage, even if they are in a secure, tamper-evident bag. However, there are exceptions for certain items such as baby and toddler drinks and food, breast milk, and infant formula, which are allowed in quantities exceeding 3.4 ounces if needed during the flight or at the destination and are not available for purchase after the security checkpoint.