Aerosols are generally allowed on planes, but there are strict limits and packing rules you must follow. Here’s a concise, practical guide to help you travel with aerosols safely and legally. What you can bring
- In carry-on luggage: Aerosol containers must be 3.4 ounces (100 milliliters) or smaller per item. All of these containers must fit inside a single transparent quart-sized resealable plastic bag along with other liquids, gels, and aerosols. Each passenger is typically limited to one bag. Examples commonly allowed include small hairspray, travel-sized deodorant, and other non-flammable personal care products.
 - In checked luggage: Larger aerosol containers are generally allowed, but there are limits on total quantity and you should ensure the container has a secure cap or locking mechanism to prevent accidental spraying. Do check your airline’s specific rules, as some items may be restricted.
 
Important safety and handling notes
- Do not exceed the 100 ml per container limit for carry-on items, and keep all such containers in a single bag for security screening.
 - Some aerosols are flammable or pressurized; check whether your specific product is considered hazardous for air travel. If in doubt, leave it behind or transfer to compliant travel-size containers.
 - Always ensure the cap or spray mechanism is secure to prevent leaks, and pack aerosols upright in protective or cushioned packaging to minimize accidental discharge during handling.
 - Some airlines, airports, or countries impose additional restrictions on certain aerosol types (e.g., flammable or hazardous materials). It’s wise to verify with your airline well in advance of travel.
 
How to prepare
- Pack: Carry-on containers must be 100 ml or less and all containers must fit in one quart-sized bag. Place the bag at the top of your carry-on for easy access during security screening.
 - Check-in: If you need more and qualify to pack in checked luggage, ensure compliance with quantity limits and use appropriate packing to prevent accidental release.
 - Airline rules: Always confirm the exact regulations with your airline before packing aerosols, as policies can vary by carrier and route.
 
If you’d like, share your departure country, destination, and whether you plan to pack aerosols in carry-on or checked luggage, and the exact product types (e.g., hairspray, deodorant, bug spray). I can tailor the guidance to fit the specific rules that apply to your trip.
