In 2026, the amount of perfume allowed in checked baggage is regulated by international aviation safety standards concerning "toiletry and medicinal articles" containing alcohol. According to IATA and FAA guidelines, the total net quantity of all such items (including perfume, cologne, hairspray, and rubbing alcohol) must not exceed 2 kg (4.4 lbs) or 2 L (2.1 qts) per passenger. Furthermore, the net quantity of each individual container must not exceed 0.5 kg (1 lb) or 0.5 L (17 fl oz). It is essential to ensure that the "release valves" on any aerosols are protected by a cap to prevent accidental discharge. While you can pack multiple bottles, they must collectively stay within the 2-liter limit. For travelers in 2026, it is also recommended to wrap glass perfume bottles in bubble wrap or soft clothing and place them in a leak-proof plastic bag to protect against the pressure changes and rough handling that can occur in the cargo hold.