Current TSA Liquid Rules for Carry On Bags
The Transportation Security Administration limits liquids, gels, and aerosols in carry on luggage to containers of 3.4 ounces or 100 milliliters each. All containers must fit inside a single quart sized clear plastic bag with a zip top. Passengers must remove this bag from their carry on and place it in a bin for X ray screening at the checkpoint TSA Security Screening Rules.
The 3.4 ounce limit applies to every individual container regardless of how full it is. Items that qualify as liquids include shampoo, conditioner, lotion, mouthwash, liquid makeup, and toothpaste. The TSA also treats aerosols, gels, creams, pastes, and powders in liquid form under the same rule. This standard applies to all passengers on flights departing from U.S. airports and on inbound international flights to the United States.
Exemptions and Special Categories
Certain medically necessary liquids, including prescription medications, infant formula, breast milk, and juice for infants, are exempt from the 3.4 ounce limit. These items must be declared to the TSA officer at the checkpoint and may be subject to additional screening. The TSA does not require medically necessary liquids to be placed in the quart sized bag, but they should be kept separate for inspection TSA Medications and Liquids.
Duty free liquids purchased in a sealed, tamper evident bag from an international airport are also exempt if the receipt is presented and the bag remains sealed. However, passengers connecting to a U.S. flight from an international airport may be required to surrender these items if the exemption does not apply under specific transit rules. The TSA updates these exemptions periodically, and travelers should verify requirements before departure.
How to Pack Liquids for Faster Screening
Using travel sized containers that are exactly 3.4 ounces or less helps avoid delays at the checkpoint. The TSA recommends placing all liquid containers in a single quart sized bag that is easy to open and inspect. Overstuffing the bag or using containers larger than the limit often triggers additional screening and can slow down the process TSA Travel Tips.
Packing liquids in an accessible part of the carry on bag allows officers to quickly inspect them without unpacking other items. The TSA also advises that passengers do not open sealed duty free bags after security if they want to keep the exemption. Following these steps reduces the chance of having liquids confiscated and helps maintain a smooth screening experience.