Flammable Liquids or Solids
Fuel, paints, lighter refills, matches

Household items
Drain cleaners and solvents

Pressure containers:
Spray cans, butane fuel, scuba tanks, propane tanks, CO₂ cartridges, self-inflating rafts

Weapons:
Firearms, ammunition, gunpowder, mace, tear gas or pepper spray

Other Hazardous Materials:
Dry ice, gasoline-powered tools, wet-cell batteries, camping equipment with fuel, radioactive materials (except limited quantities), poisons, infectious substances

Beware...
Many common items used everyday in the home or workplace may seem harmless, however, when transported by air, they can be very dangerous. In flight, variations in temperature and pressure can cause items to leak, generate toxic fumes or start a fire.

It's the Law...
You must declare your hazardous materials to the airline, air package carrier, or U.S. Postal Service. Violators of Federal hazardous Materials Regulations (49 CFR parts 171-180) may be subject to a civil penalty of up to $27,500 for each violation and, in appropriate cases, a criminal penalty of up to $500,000 and/or imprisonment of up to 5 years.

Plan Ahead...

Hazardous materials are prohibited in checked or carry-on baggage.

There are certain exceptions for personal care, medical needs, sporting equipment, and items to support physically challenged passengers. For example:

Personal care items containing hazardous materials (e.g., flammable perfume, aerosols) totaling no more than 70 ounces may be carried on board. Contents of each container may not exceed 16 fluid ounces.

Matches and lighters may only be carried on your person. However, "strike-anywhere" matches, lighters with flammable liquid reservoirs and lighter fluid are forbidden.

Firearms and Ammunition may not be carried by a passenger on an aircraft. However, unloaded firearms may be transported in checked baggage if declared to the agent at check in and packed in a suitable container. Handguns must be in a locked container. Boxed small arms ammunition for personal use may be transported in checked luggage. Amounts may vary depending on the airline.

Dry ice (4 pounds or less) for packing perishables, may be carried on board an aircraft provided the package is vented.

Electric wheelchairs must be transported in accordance with airline requirements. The battery may need to be disconnected, removed, and the terminals insulated to prevent short circuits.