Most aerosols are banned from checked bags, but some common ones are allowed

The TSA prohibits most aerosols in checked luggage because pressurized containers can rupture in the cargo hold and create fire hazards. However, a small number of aerosols are permitted under specific conditions: personal care items like deodorant, hairspray, and perfume in containers of 2 ounces or smaller, plus certain medicinal and toiletry sprays. The key is that the container must be equipped with a safety cap to prevent accidental discharge, and you can pack no more than one 18-ounce container or two 2-ounce containers per passenger.

Paint, insecticides, tear gas, self-defense sprays, cooking sprays, and flammable aerosols are never allowed in checked bags. If you are unsure whether a specific product is permitted, check the label for hazard warnings or contact your airline before you pack.

Key Takeaways

  • Deodorant, hairspray, and perfume in containers of 2 ounces or smaller are the most common aerosols allowed in checked luggage, provided they have a safety cap.
  • You can pack up to one 18-ounce container or two 2-ounce containers of permitted aerosols per passenger in checked bags.
  • Flammable aerosols, insecticides, paint, and self-defense sprays are completely banned from checked luggage.
  • The TSA restriction exists because pressurized containers can rupture in the cargo hold and pose a fire risk to the aircraft.

Which aerosols are actually permitted in checked bags

The TSA allows certain personal care and medicinal aerosols in checked luggage if they meet size and safety requirements. Deodorant (both spray and solid), hairspray, perfume, cologne, and body spray are the most common items passengers pack. You can also bring medicinal sprays such as asthma inhalers, throat sprays, and topical pain relief sprays, as long as they are in their original, labeled containers.

Each aerosol container must not exceed 2 ounces (about 59 milliliters) and must have a safety cap or mechanism that prevents the nozzle from being pressed during transport. The total number of aerosol containers is limited to one 18-ounce container or two 2-ounce containers per passenger. This means you could pack two small deodorants or one larger hairspray, but not three small cans of the same product.

Aerosols that are completely banned from checked luggage

Flammable aerosols are never permitted in checked bags under any circumstances. This category includes spray paint, spray adhesive, spray starch, cooking sprays, and any product labeled as flammable. Insecticides, pesticides, and bug sprays are also prohibited, even if they are small containers. Self-defense sprays, pepper spray, and tear gas are banned from both checked and carry-on bags.

Lighter fluid, propane, butane, and other fuel-based aerosols cannot be packed in checked luggage. Sunscreen spray is also prohibited in checked bags, though you can bring sunscreen in lotion or cream form. If a product label includes warnings about flammability, pressure, or toxicity, assume it is banned unless you have confirmed otherwise with your airline.

How to check if your specific aerosol is allowed

Read the product label carefully before packing. The label will state whether the product is flammable, contains compressed gas, or poses other hazards. If you see warnings like "flammable," "pressurized," "combustible," or "contains compressed gas," the aerosol is likely banned from checked luggage. Many personal care products do not carry these warnings and are safe to pack.

If the label is unclear or you own a product that does not have standard labeling, contact your airline directly before your trip. Airlines sometimes have slightly different rules than the TSA, and some international carriers enforce stricter limits. You can also call the TSA at 1-855-787-2227 or use their "Ask TSA" service on their website to verify a specific product.

What happens if you pack a banned aerosol

If a banned aerosol is discovered during baggage screening, your bag will be held and you will be notified. The prohibited item will be confiscated, and you may face delays or additional fees depending on your airline's policy. In some cases, the TSA may open your bag to remove the item, which can damage other contents.

If you realize you packed a banned aerosol after you have checked your bag, inform a TSA officer or airline representative when ready. It is better to report it yourself than to have it discovered during screening, as this shows good faith and may result in a less severe outcome.

Aerosols in carry-on bags are more restricted

Carry-on bags have stricter rules than checked luggage. You cannot bring any aerosol in a carry-on bag, with the exception of one 3.7-ounce container of self-defense spray (in checked luggage only, not carry-on). This means deodorant, hairspray, perfume, and all other aerosols must go in your checked bag if you want to bring them at all.

If you need an aerosol product during your flight, you will have to purchase it after you pass through security or wait until you reach your destination. Many airports have shops where you can buy travel-size deodorant or hairspray if you forgot to pack it in checked luggage.

International flights and different airline rules

International carriers and flights departing from non-US airports may have stricter aerosol rules than the TSA. Some airlines ban all aerosols from checked bags, while others allow the same items as the TSA but in smaller quantities. Always check your specific airline's baggage policy before packing, especially if you are flying internationally or connecting through multiple carriers.

If you are traveling to another country, research that country's customs regulations as well. Some nations prohibit aerosols entirely or require special documentation for medicinal sprays. Packing prohibited items can result in confiscation at your destination and potential fines.

Frequently Asked Questions

Can I pack spray deodorant in my checked bag?

Yes, spray deodorant is allowed in checked luggage if the container is 2 ounces or smaller and has a safety cap. You can pack up to one 18-ounce container or two 2-ounce containers per passenger. Solid deodorant has no size restrictions and can go in checked or carry-on bags.

Is hairspray allowed in checked luggage?

Hairspray is permitted in checked bags in containers of 2 ounces or smaller with a safety cap. You are limited to one 18-ounce container or two 2-ounce containers per passenger. Check the label to confirm it is not labeled as flammable, as some hairsprays are and those are banned.

Can I bring sunscreen spray in my checked bag?

Sunscreen spray is banned from checked luggage because most formulations are flammable. You can bring sunscreen lotion or cream in checked or carry-on bags with no size restrictions. If you need spray sunscreen, purchase it at your destination.

What if my medication is in an aerosol inhaler?

Medicinal aerosols like asthma inhalers are allowed in both checked and carry-on bags in their original, labeled containers. There is no size limit for prescription inhalers. Bring your prescription or a doctor's note if you are concerned about questions at security.

Are cooking sprays allowed in checked luggage?

No, cooking sprays are banned from checked luggage because they are flammable. This includes non-stick cooking spray, oil spray, and butter spray. You cannot bring these items on any flight.