Certain items should not be packed in your carry-on bag. What Not to Pack in Your Carry On Bag? Prohibited items include sharp objects like knives, tools, and scissors with blades longer than 4 inches. Liquids over 3.4 ounces are also restricted, unless in a clear, quart-sized bag. Additionally, firearms, explosives, and flammable items are strictly prohibited. Check the Transportation Security Administration (TSA) guidelines for the most up-to-date information before traveling.
