You can bring liquids on a plane in containers that are 3.4 fluid ounces (100 milliliters) or less each. All these containers must fit into one clear, quart-sized (about 32 ounces) resealable bag , and you are allowed to bring only one such bag in your carry-on luggage. This rule is known as the TSA 3-1-1 liquids rule. There is no specific limit on the number of containers, as long as they fit in the quart-sized bag. Typically, this means you can carry approximately 7 to 8 bottles of 3.4 ounces each, totaling around 25 fluid ounces. Larger containers, even if partially full, are not allowed in carry-on bags. Exceptions to this rule include medically necessary liquids (like prescription medications), baby formula, breast milk, and juice for infants. These can be carried in larger quantities but must be declared at security. Liquids larger than 3.4 ounces should be put in checked baggage if possible. Liquids purchased after security or duty-free liquids (in sealed packaging with receipts) can also exceed this limit. In some airports with advanced scanning technology (like certain UK airports), the limit per liquid container can be up to 2 liters, but this is not the standard TSA rule in the US. In summary for standard US travel:
- Max 3.4 oz per liquid container
- All containers fit in 1 quart-sized clear bag
- Only 1 bag per passenger
- Exceptions for meds and baby liquids
This rule applies to liquids, gels, aerosols, creams, and pastes carried in hand luggage. This information is up-to-date as of 2025.
