If you are carrying perfume in your hand luggage, it must strictly follow the "3-1-1" rule. This means the bottle must be 100ml (3.4 oz) or less and it must be placed inside a single, transparent, quart-sized resealable plastic bag along with your other liquids (gels, aerosols, and creams). In 2026, while some airports with advanced CT scanners are beginning to relax the "remove from bag" requirement, the official international standard still requires these liquids to be bagged for easy inspection. If your perfume is in your checked luggage, there is no need to put it in a clear plastic bag, and you can bring much larger bottles (up to 500ml is generally safe). However, it is highly recommended to wrap it in a Ziploc bag or clothing to prevent a fragrant disaster in your suitcase if the bottle breaks or leaks due to pressure changes.