List of Items That Need to Be in a Quart-Size Bag for Travel

When carrying luggage on board an airplane, you'll need to place certain items within a transparent and sealed quart-size plastic bag. The Transportation Security Administration enforces this rule for all flights departing from or arriving at U.S. airports. In addition, many international flight security agencies have adopted the rule, making quart-size bags vital gear for many travelers.

General Rules

When packing fluids in carry-on luggage, use containers with a volume of 3.4 oz. or less. All fluid containers must fit within a single clear plastic bag with a volume of one quart and with a zip-style closure. You must remove these bags from larger pieces of luggage to pass them through security screening devices. The Transportation Security Administration has devised the slogan "3-1-1" to remind passengers of the basic requirements: they may carry 3 oz. (technically 3.4 oz.) per container in one bag with a volume of one quart.

Gels

For the purposes of airplane security, gels are considered a fluid and must follow the 3-1-1 rule. While TSA does not issue a set list of gels, common items include many gelatinous cosmetics and beauty products -- for example, styling gel, gel toothpaste and gel deodorant. These product frequently come in packaging of more than 3.4 oz., so consider purchasing travel-size products or transferring a small quantity into a smaller container. Explicit exceptions to the ruling on gels include gel medications, such as petroleum jelly used for medical purposes and prosthetic devices including prosthetic breasts and bras.

Liquids

Liquids are typically easier to identify than gels or aerosols. Common liquids that must follow the carry-on ruling include aftershave, perfume, shampoo, liquid soap and eau de toilette. Notable exceptions to the rule include breast milk and juice for babies or small children, medications, saline solution for medical purposes, beverages for passengers with a disabilities or medical conditions and liquids that are frozen solid.

Aerosols

Aside from liquids and gels, aerosols are considered fluids, and as such, you must pack them according to the 3-1-1 rule if you intend to carry them on the plane with you. While somewhat less common than liquids or gels, typical aerosols found in carry-on luggage include spray deodorants and anti-perspirants. Medication in aerosol form is an exception to the 3-1-1 rule.