What's Allowed, What's Not Prohibited items include weapons, explosives and incendiaries and items that are seemingly harmless but may be used as weapons.
The following items are allowed in carry-on luggage and checked baggage:
Cigar cutters, corkscrews, cuticle cutters, eyeglass repair tools (including screwdrivers), eyelash curlers, knitting and crochet needles, knives that are round-bladed butter or plastic, nail clippers, nail files, personal care items or toiletries with aerosols in limited quantities (such as hairsprays, deodorants), safety razors (including disposable razors), scissors (plastic or metal with blunt tips), toy weapons (if not realistic replicas), tweezers, umbrellas (allowed in carry-on baggage once they have been inspected to ensure that prohibited items are not concealed), walking canes (allowed in carry-on baggage once they have been inspected to ensure that prohibited items are not concealed), camcorders, camera equipment (the checked-baggage screening equipment will damage undeveloped film in camera equipment -- the Transportation Safety Administration recommends that you either put undeveloped film, and cameras containing undeveloped film, in your carry-on baggage or take undeveloped film with you to the checkpoint and ask the screener to conduct a hand inspection), laptop computers, mobile phones, pagers and personal data assistants.
Note: Some personal care items containing aerosol are regulated as hazardous materials.
Medication and special needs devices that are allowed in carry-on and checked bags:
Braille note taker, slate and stylus, augmentation devices; diabetes-related supplies/equipment (once inspected to ensure prohibited items are not concealed) including: insulin and insulin-loaded dispensing products; vials or box of individual vials; jet injectors; pens; infusers; preloaded syringes; an unlimited number of unused syringes, when accompanied by insulin; lancets; blood glucose meters; blood glucose meter test strips; insulin pumps; and insulin pump supplies. Insulin in any form or dispenser must be properly marked with a professionally printed label identifying the medication or manufacturer's name or pharmaceutical label; nitroglycerine pills or spray (if properly marked with a professionally printed label identifying the medication or manufacturer's name or pharmaceutical label); prosthetic device tools and appliances, including drill, Allen wrenches, pull sleeves used to put on or remove prosthetic devices, if carried by the individual with the prosthetic device or his or her companion.
Sharp objects that are not allowed in carry-on bags but may be packed in checked luggage:
Box cutters, ice axes/ice picks, knives (any length and type), meat cleavers, razor-type blades such as box cutters, utility knives, razor blades not in a cartridge, sabers, scissors (metal with pointed tips), swords.
Note: Any sharp objects in checked baggage should be sheathed or securely wrapped to prevent injury to baggage handlers and inspectors.
Sporting goods that are not allowed in carry-on but may be checked in luggage:
Baseball bats, bows and arrows, cricket bats, golf clubs, hockey sticks, lacrosse sticks, pool cues, ski poles, spear guns.
Guns and firearms that are not allowed in carry-on bags but may (depending on the airline) be checked in luggage:
Ammunition (check with your airline or travel agent to see if ammunition is permitted in checked baggage on the airline you are flying, and ask about limitations or fees that may apply. If ammunition is permitted, it must be declared to the airline at check-in. Small arms ammunitions for personal use must be securely packed in fiber, wood or metal boxes or other packaging specifically designed to carry small amounts of ammunition), BB guns, compressed air guns, firearms, parts of guns and firearms, pellet guns, realistic replicas of firearms, starter pistols.
Note: Firearms carried as checked baggage must be unloaded and packed in a locked, hard-sided gun case. Only you, the passenger, may have the key or combination.
Tools that are not allowed in carry-on but may be checked in luggage:
Axes and hatchets, cattle prods, crowbars, hammers, drills (including cordless portable power drills), saws (including cordless portable power saws), screwdrivers, tools (including but not limited to wrenches and pliers.
Martial arts/self-defense items that are not allowed in carry-on but may be checked in luggage:
Billy clubs, black jacks, brass knuckles, kubatons, mace/pepper spray (one 118-ml or 4-ounce container of mace or pepper spray is permitted in checked baggage provided it is equipped with a safety mechanism to prevent accidental discharge -- for more information on these and other hazardous materials: cas.faa.gov/these.html.), martial arts weapons, night sticks, nunchakus, stun guns/shocking devices, throwing stars.
Never bring this stuff onboard a plane, either in carry-on or checked luggage:
Explosive materials, blasting caps, dynamite, fireworks, flares in any form, hand grenades, plastic explosives, flare guns, gun lighters, gun powder, aerosol (any except for personal care or toiletries in limited quantities), fuels (including cooking fuels and any flammable liquid fuel), gasoline, gas torches, lighter fluid, strike-anywhere matches, turpentine and paint thinner, disabling chemicals and other dangerous items, chlorine for pools and spas, compressed gas cylinders (including fire extinguishers), liquid bleach, spillable batteries (except those in wheelchairs), spray paint or tear gas.