You can bring liquids on a plane in containers of 3.4 ounces (100 milliliters) or less each. All these containers must fit within one clear, resealable quart-sized (about 32 ounces) plastic bag. Each passenger is allowed only one such bag in their carry-on luggage. This is known as the TSA 3-1-1 liquids rule: 3.4 ounces per container, 1 quart-sized bag, 1 bag per passenger
. In total, this means you can carry roughly 25 to 32 ounces of liquid in your carry-on, depending on how many small containers fit into the quart-sized bag
. There are exceptions for medically necessary liquids (like prescription medications, baby formula, breast milk) which can be carried in larger quantities but must be declared to TSA officers for additional screening
. Liquids purchased after security or duty-free items are not subject to this limit as long as they remain sealed and accompanied by a receipt
. In summary:
- Maximum container size: 3.4 ounces (100 ml)
- All containers must fit in one quart-sized clear bag
- One bag per passenger
- Exceptions exist for medications, baby items, and duty-free purchases
This rule applies to carry-on luggage only; checked baggage has no such liquid restrictions
