Yes, you can take stick (solid) deodorant on a plane in your carry-on luggage without any restrictions. According to TSA guidelines that remain standard in 2026, solid stick deodorant is not considered a liquid, gel, or aerosol. This means it does not need to be placed in your clear, quart-sized "3-1-1" bag and can be any size (even a "jumbo" or "value" pack). However, travelers must be careful because gel, spray (aerosol), and roll-on deodorants are classified as liquids or gels. If you use one of those types, it must be in a container of 3.4 ounces (100ml) or less to go in your carry-on. If you have a larger spray or gel, it must be packed in your checked bag. For 2026 travelers looking to breeze through security, the solid stick remains the most "security-friendly" option, as it completely bypasses the liquid rules and reduces the chances of your bag being flagged for a secondary search at the X-ray machine.