Aerosol cans are banned from checked luggage on all commercial flights in the United States

You cannot bring aerosol cans in your checked bag on any U.S. commercial airline. The Federal Aviation Administration (FAA) and the Transportation Security Administration (TSA) prohibit all aerosols in checked luggage because pressurized containers can rupture, leak, or explode in the cargo hold where temperature and pressure changes are extreme. This rule applies to every airline operating in the U.S., whether you're flying domestic or international.

The ban covers nearly every aerosol product you own: deodorant, hairspray, shaving cream, spray sunscreen, insect repellent, air freshener, cooking spray, and paint. Even empty cans are prohibited because residual propellant remains inside. The only exceptions are a very small number of medical aerosols (like asthma inhalers) and safety equipment aerosols (like life vests), which have their own strict rules.

Key Takeaways

  • All aerosol cans are banned from checked luggage on U.S. flights, with no exceptions for empty cans or travel-size bottles.
  • You may bring one 3.4-ounce (100 ml) container of aerosol in your carry-on bag only if it is a toiletry or personal care product.
  • Medical aerosols like inhalers and EpiPens are allowed in carry-on bags but must be declared to the flight crew.
  • If you need an aerosol product at your destination, buy it there after you land rather than packing it.
  • International flights have the same restrictions, and some countries have even stricter rules for carry-on aerosols.

Why aerosols cannot go in checked bags

Cargo holds are unpressurized or only partially pressurized, and temperature drops significantly at cruising altitude. Aerosol cans are designed to hold liquid under pressure, and when external pressure drops and temperature falls, the pressure inside the can increases. A rupture or leak in the cargo hold can damage other luggage, create a fire hazard, or contaminate the aircraft's systems.

The TSA and FAA treat aerosols as hazardous materials because of this physical risk. Even a single leaking can of deodorant can ruin everything in your suitcase and create a safety problem for the entire flight. This is why the rule has no exceptions for small quantities or travel sizes in checked bags.

What you can bring in your carry-on instead

You may bring one 3.4-ounce (100 ml) container of aerosol in your carry-on bag if it is a toiletry or personal care product. This includes deodorant, hairspray, shaving cream, and spray sunscreen. The container must fit within the standard 3-1-1 liquid rule: 3.4 ounces or smaller, in a single quart-size clear plastic bag, one bag per person. You'll place this bag in the security bin at the checkpoint, just like you would with liquid shampoo or toothpaste.

The 3.4-ounce limit is strict. A standard aerosol deodorant stick is usually 1.5 to 2 ounces, so a regular-size can will not fit. Travel-size aerosols (typically 1 to 2 ounces) work well for this rule. Check the label on your can to confirm the exact ounces before packing.

Non-toiletry aerosols—like spray paint, insect repellent for outdoor use, or cooking spray—are not allowed in carry-on bags either. Only personal care and toiletry aerosols may have access to for the carry-on exception.

Medical and safety aerosols: the narrow exceptions

Asthma inhalers, EpiPens, and similar prescription medical aerosols are allowed in carry-on bags. You do not need to follow the 3.4-ounce rule for these. However, you must declare them to the flight crew before takeoff. Place them in an easily accessible pocket of your carry-on so you can remove them quickly if asked.

Life vest aerosols and other safety equipment aerosols have their own rules and are generally not something a passenger would pack. If you are traveling with specialized safety equipment, contact your airline directly before your trip.

What happens if you pack an aerosol in checked luggage

If TSA screening discovers an aerosol in your checked bag, the bag will be removed from the flight. You will not be allowed to travel with that luggage. Depending on your airline and the specific situation, you may be able to remove the aerosol and recheck the bag, or you may miss your flight entirely. There is no fine for a first offense, but repeated violations can result in penalties.

Some passengers accidentally pack aerosols because they forget they are in a toiletry bag or cosmetics case. Before you close your checked luggage, do a final check: look inside every pocket, pouch, and compartment for any pressurized container. This takes two minutes and prevents your bag from being pulled at the gate.

Packing aerosols for international travel

The same TSA and FAA rules explore to international flights departing from the U.S. However, the country you are flying to may have stricter rules. Some nations ban aerosols from carry-on bags entirely or allow only certain types. Before you pack, check the regulations of your destination country and your connecting countries if you have a layover.

If you are flying internationally and need an aerosol product, the safest option is to buy it at your destination after you land. Most toiletries and personal care items are available worldwide, and you avoid the risk of your bag being confiscated or delayed.

Practical alternatives to packing aerosols

If you use deodorant daily, consider switching to a solid stick or roll-on for your trip. These are not aerosols and can go in checked or carry-on luggage without any restrictions. Solid deodorant works just as well as spray and takes up less space.

For hairspray, bring a small solid styling product or a non-aerosol spray bottle instead. For sunscreen, pack a lotion or stick version rather than spray. For shaving cream, use a bar of soap or a non-aerosol cream. Most of these alternatives are actually easier to pack because they do not have size limits and do not require special handling at security.

If you absolutely need a specific aerosol product and cannot find a non-aerosol version, plan to purchase it at your destination. Drugstores, supermarkets, and convenience stores in every major city carry common aerosol products. This is simpler and safer than trying to bring one on the plane.

Frequently Asked Questions

Can I bring an empty aerosol can in my checked bag?

No. Even empty cans contain residual propellant and are prohibited in checked luggage. The TSA treats any aerosol container as hazardous, regardless of whether it still has product inside. If you want to recycle an empty can, do so at home before your trip.

What if my medication is in an aerosol inhaler?

Prescription medical aerosols like asthma inhalers are allowed in carry-on bags without size restrictions. You do not need to follow the 3.4-ounce rule. Declare it to the flight crew before takeoff and keep it in an straightforward-to-reach pocket of your carry-on bag.

Can I pack aerosols if I'm flying with a private airline or charter?

Private and charter airlines have their own rules, which may differ from commercial airline rules. Contact your charter company directly before packing. Many private operators follow the same FAA guidelines, but some are more or less strict.

What if I forgot and packed an aerosol in my checked bag?

TSA will find it during screening and remove your bag from the flight. You may be able to remove the aerosol and recheck your bag if you are at the airport early enough, but you risk missing your flight. Always do a final check of your luggage before heading to the airport.

Are travel-size aerosols allowed in carry-on bags?

Yes, if they are toiletry or personal care aerosols and are 3.4 ounces or smaller. Travel-size deodorant, hairspray, and shaving cream all fit this rule. Place the can in your quart-size clear plastic bag at security, just like you would with liquid toiletries.