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US Department of Transportation, Pipeline and Hazardous Materials Safety Administration
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Aerosol can and airport
Check the Transportation Security Administration's (TSA) current carry-on quantity rules and exceptions at, and related links. For security reasons, with some exceptions, TSA currently allows you to carry on containers no larger than three ounces.,
Next, separate medicinal aerosols from personal toilet items.
As a rule of thumb, aerosols that are personal, medicinal, and toilet items are those that are sprayed on your body. These can be carried on board (following TSA's 3-1-1 rule) or in checked baggage.
Other aerosols, if allowed, should be packed in checked baggage, regardless of size. The DOT regulations forbid flammable aerosols except in the personal, medicinal, and toilet items discussed above - you may not travel with other flammable aerosols in any baggage.
You may NOT travel with:
  • Aerosol laundry starch
  • Aerosol static remover
  • Spray paint
  • Spray cleaners/lubricants, ex. WD-40
  • Aerosol surface disinfectants and other cleaners
There may be some pump-spray versions of the above items that are not considered hazardous materials.
Travel with the cap on your aerosol can, whether it is in checked or carry-on baggage.
Finally, follow the safety tips and quantity limitations on the following pages, when you travel with aerosols, whether in carry-on or checked baggage!