Packing for air travel can be tricky, but Delta's restricted-items policy is straightforward and clear. If you're planning to travel with Delta, know what you can and can't carry on the aircraft well before you pack to save yourself time, hassle and even fines at the airport.

Personal Items

Delta does not allow any more than 70 oz. of personal care items, such as shampoo, to be carried on. Passengers may not carry butane refills, such as for butane curling irons, or more than two carbon dioxide cylinders, such as for a personal flotation device. No butane-powered curling irons are permitted on Delta flights to Switzerland. Under no circumstances does Delta permit liquid oxygen in the cabin.

Sports, Appliances and Weapons

Delta does not allow camping equipment or devices that contains fuel, fuel residue or compressed gas, such as for a paintball cartridge. Gunpowder in any form, such as tear gas, pepper spray or mace, is never allowed on a Delta flight. No refrigerator, dehumidifier, air conditioner or freezer is allowed on board at any time due to the refrigerant contained within these devices. No passenger is allowed to carry on in excess of two extra fuel cell cartridges, such as to power a laptop or digital camera.

Chemicals

All household aerosols, bleach, cleaning agents and pesticides are banned from all Delta flights. Passengers also may not carry on lighter refills, lubricant, paint or stains. "Strike anywhere" matches are prohibited as well. No explosive of any kind, including fireworks, firecrackers, sparklers and flares are allowed on board Delta. No more than 5.5 lbs. of dry ice is permitted for any reason. Wet ice is never permitted.

Other Items

No more than five liters of alcohol is allowed per passenger and no alcohol brought on board may exceed 140 proof. Delta prohibits bringing on board ready-to-eat meals (MREs) due to the items' potentially extreme temperatures and ability to cause serious injury. No poisonous, infectious or radioactive material of any kind is allowed on Delta flights.