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 comfortably into one quart-sized (approximately 1 liter) clear, resealable plastic bag. Each passenger is limited to one such quart-sized bag

. In terms of total volume, this typically means you can carry about 25 to 27 ounces of liquids in your carry-on, depending on how many 3.4-ounce containers fit into the quart-sized bag

. There are some exceptions to this rule:

• Medically necessary liquids (such as prescription medications, baby formula, and breast milk) can be carried in larger quantities but must be declared to TSA officers at security screening

• Liquids purchased after passing through airport security, including duty-free items, can exceed the 3.4-ounce limit if kept in their sealed packaging with a receipt

Any liquids exceeding these limits that are not exempt will be confiscated at security. In summary:

• Maximum container size: 3.4 ounces (100 ml) per item
• Maximum total volume: All containers must fit in one quart-sized bag (about 1 liter)
• One quart-sized bag per passenger
• Exceptions for medically necessary liquids and duty-free purchases

This is commonly known as the TSA 3-1-1 liquids rule and is aligned with international regulations