You can only bring small containers in your carry-on, and they all have to fit together in one clear quart-size bag.

Quick Scoop: TSA liquid rule (3-1-1)

For flights departing the U.S. (and many countries with similar rules):

  • Each liquid/gel/aerosol container can be up to 3.4 ounces (100 ml).
  • All of your containers must fit inside one clear, quart-size (about 1 liter) resealable bag.
  • You’re allowed one quart-size bag per passenger in your carry-on.
  • The rule applies to liquids, gels, creams, pastes, and aerosols (like shampoo, toothpaste, hair gel, etc.).

There isn’t a set total ounce limit; the limit is “as many 3.4 oz (or smaller) containers as can comfortably fit and let the bag close.” Most people fit around 5–7 travel bottles in a quart bag.

A simple way to remember it

  • 3 – containers up to 3.4 ounces (100 ml)
  • 1 – one quart-size clear bag
  • 1 – one bag per person

This is why you’ll see “TSA 3-1-1 rule” in a lot of travel articles and forum discussions.

A few extra notes

  • The 3.4 oz limit is about the size of the bottle , not how full it is; a half-full 6 oz bottle can still be taken away.
  • Larger liquids can go in checked luggage instead of your carry-on.
  • There are special exceptions for things like medically necessary liquids and baby formula , which can exceed 3.4 oz but usually must be declared and screened separately.

Information gathered from public forums or data available on the internet and portrayed here.