Here are the Department of Transportation (DOT) quantity limits for all aerosols.

These DOT quantity limits determine the amounts of aerosol you can safely travel with, and are in addition to the security rules the TSA enforces.

Limit on can size:
The DOT limit for a single can carried in any way onboard an aircraft (checked baggage or carry-on,) is .5 kg (18 oz) or 500 ml (17 fl. oz) per can. But remember, the TSA's 3-1-1 rule for carry-on baggage currently applies as well!

Limit per passenger:
The limit for each individual passenger is 2 kg (70 oz) or 2 L (68 fl. oz) per passenger.

This means that a passenger could carry 5 to 7 average size (10-14 oz) aerosol cans.

Most aerosol cans are well below the 18-oz limit - but check the labels of your large aerosol cans before packing them!