Non-flammable liquids and gels are allowed in your carry-on, but each bottle must be 3.4 ounces (100ml) or less. All liquids and gels that you pack in your carry-on must be placed in 1 quart-sized, clear plastic zip bag. You are required to remove this bag from your luggage and lay it in the screening bin before passing through security. Only one zip bag is permitted per traveler. Liquids and gels in containers that exceed 3.4 ounces will be confiscated, however some medications, baby formula, baby food, and breast milk are permitted in reasonably larger amounts as long as they are declared at the checkpoint.
Although the rules for checked liquids are more lenient than those for carry-on liquids, potentially explosive liquids are prohibited on planes no matter where they are packed. Banned explosive liquids include fuel, gasoline, aerosol paint and lighter fluid. Artists beware: turpentine, paint thinner, spray paint and some types of potentially flammable paint are not allowed. It is recommended that you check with the Transportation Security Administration (TSA) website before packing a questionable fluid.
The TSA has banned disabling liquids such as bleach, chlorine and spillable batteries in both checked and carry-on luggage.
Snow globes, gel candles and gel shoe inserts are not allowed in carry-on luggage, but are permitted in checked bags. Shoes with built-in gel heels are allowed to be worn on the plane but must first be removed and thoroughly screened by TSA workers.
Non-flammable, permitted liquids, gels and aerosols purchased after the security checkpoint are allowed on planes in containers that exceed 3.4 ounces.
