You can bring liquids in containers of 3.4 fluid ounces (100 milliliters) or less each in your carry-on bag. All these containers must fit comfortably within one clear, resealable quart-sized bag. Only one such bag is allowed per passenger
. In terms of quantity, this typically means you can carry about seven or eight containers of 3.4 ounces each, depending on how well they fit in the quart-sized bag, totaling roughly 25 fluid ounces of liquids
. Exceptions to this rule include medically necessary liquids (like prescription medications, baby formula, and breast milk), which can be carried in reasonable quantities beyond the 3.4-ounce limit but must be declared at security
. Liquids purchased after security or duty-free liquids in sealed packaging with receipts also do not count toward this limit
. Anything exceeding these limits must be placed in checked luggage or else it may be confiscated at the security checkpoint
