You are allowed to bring liquids, aerosols, gels, creams, and pastes in your carry-on bag in containers of 3.4 ounces (100 milliliters) or less each. All these containers must fit into one clear, quart-sized (about 32 ounces) resealable bag, and each passenger is limited to one such bag. This is commonly known as the TSA 3-1-1 rule (3.4 oz per container, 1 quart-sized bag, 1 bag per passenger)
. In terms of total ounces, you can carry approximately 25 to 27 ounces of liquids on a plane, depending on how many 3.4-ounce containers fit in your quart-sized bag (usually about seven or eight containers)
. There are important exceptions to this rule:
- Medically necessary liquids, including prescription medications, can be carried in larger amounts but must be declared at security
- Baby formula, breast milk, and juice for infants can also exceed the 3.4-ounce limit but must be declared
- Liquids purchased after security (duty-free items) are allowed in larger quantities if they remain sealed in tamper-evident bags with receipts
For checked baggage, there are generally no TSA liquid restrictions, but airline-specific rules may apply, especially for items like alcohol
. Additionally, if you are flying to the US, you can carry up to 12 ounces (350 grams) of powdered goods in your hand baggage, but this is separate from the liquid rules
. In summary:
- Carry-on liquids: Containers no larger than 3.4 ounces each
- All containers must fit in one quart-sized clear bag
- Approximately 25-27 ounces total in carry-on liquids
- Exceptions for medications, baby products, and duty-free liquids
- No liquid limits for checked baggage, but pack carefully to avoid leaks
This ensures compliance with TSA and international regulations for liquids on planes
