Keep passports, keys, cash, essential medication, valuable electronics, and anything needed immediately after landing in your personal item or cabin bag. Fragile belongings may also be safer with you because checked luggage can experience impacts during handling. Rules for batteries, liquids, aerosols, tools, and other restricted items can vary by airline, route, and destination. Review the current requirements before departure rather than assuming an item is permitted because it physically fits inside your checked luggage.