It's hard to keep track of what you can and cannot carry aboard flights. It's no surprise that loaded weapons and explosives are strictly off-limits in airports and on planes, but the guidelines on some more common items might be less obvious to travelers. In August 2006, the Transportation Security Administration instituted a ban on gels and liquids. Federal authorities announced on September 25 that they are relaxing some of the regulations, allowing passengers to carry some previously prohibited items aboard planes. Beginning September 26, travelers can carry travel-sized toiletries through security checkpoints, as long as everything fits in a quart-sized, clear plastic, zip-top bag. (see picture)

The following is a list of regulations from the TSA on some everyday items passengers may and may not bring with them to the airport.

Source: Transportation Security Administration (September 25, 2006)

Item Allowed in carry-on luggage? Allowed in checked luggage?
Liquids and gels
Shampoo, conditioner Yes1 Yes
Cosmetics Yes1 Yes
Gels Yes1 Yes
Aerosols Yes1 Yes
Prescription liquids Yes1 Yes
Nonprescription liquids Yes2 Yes
Beverages Yes3 Yes
Baby formula Yes4 Yes
Personal Items
Cigar cutters Yes Yes
Corkscrews Yes Yes
Nail clippers Yes Yes
Knitting and crochet needles Yes Yes
Safety razors Yes Yes
Scissors (metal pointed tips, cutting edge 4 inches or less) Yes5 Yes5
Scissors (plastic or metal with blunted tips) Yes5 Yes5
Tweezers Yes Yes
Sharp objects
Box cutters, ice axes/Ice picks, knives, meat cleavers, razor-type blades, sabers, swords No Yes
Sporting goods
Baseball bats, bows and arrows, cricket bats, golf clubs, hockey sticks, lacrosse sticks, pool cues, ski poles, spear guns No Yes
Guns and firearms
Ammunition, BB guns, compressed air guns, firearms, parts of guns and firearms, pellet guns, realistic replicas of firearms, starter pistols No Yes
Flare guns, gun lighters, gunpowder No No
Tools
Axes and hatchets, cattle prods, crowbars, hammers, drills, saws No Yes
Screwdrivers, wrenches, pliers and other tools (less than 7 inches long) Yes Yes
Martial arts/self-defense items
Billy clubs, blackjacks, brass knuckles, kubatons, nightsticks, nunchakus, throwing stars No Yes
Mace/pepper spray No6 Yes6
Explosive materials
Blasting caps, dynamite, fireworks, flares (in any form), hand grenades, plastic explosives, realistic replicas of explosives No No
Flammable items
Aerosol (any except for personal care or toiletries in limited quantities) No No
Fuels (including cooking fuels and any flammable liquid fuel), gasoline, gas torches, lighter fluid, turpentine and paint thinner No No
Lighters No7 No7
Nonstrike-anywhere matches (up to four books) Yes No
Strike-anywhere matches No8 No8
Realistic replicas of incendiaries No No
Disabling chemicals and other dangerous items
Chlorine for pools and spas, liquid bleach, spray paint, tear gas, compressed gas cylinders (including fire extinguishers) No No
Spillable batteries (except those in wheelchairs) No No
Medication and special needs devices
All medical and special needs devices are allowed, as long as they are properly marked with a professionally printed label identifying the medication or manufacturers name or pharmaceutical label, and inspected to ensure prohibited items are not concealed. Yes Yes
Electronic devices
All electronic devices are allowed, but check with your airline or travel agent for restrictions on the use of these and other electronic items during your flight. Yes Yes


1Travel-sized toiletries and medicines must be 3 ounces or less and fit comfortably in a 1-quart, clear plastic, zip-top bag. The name on prescription medicine must match the passenger's ticket.
2Nonprescription liquids, such as saline solution and eye care products, are allowed as long as they do not exceed 4 ounces.
3Travelers can bring beverages and other items on board if purchased in the secure boarding area.
4Baby formula and breast milk are allowed for passengers traveling with a baby or toddler. All formula will be inspected.
5 Ostomy scissors are allowed in carry-on and checked luggage.
6 One 118-millimeter or 4-fluid-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 visit http://www.faa.govexternal link, click on Passengers, then Preparing to Fly.
7 All lighters are prohibited as carry-on items. Lighters without fuel are permitted in checked baggage. Lighters with fuel are prohibited in checked baggage, unless they adhere to the DOT exemption, which allows up to two fueled lighters if properly enclosed in a DOT approved case. If you are uncertain as to whether your lighter is prohibited, please refrain from bringing it to the airport.
8 Up to four books of safety (nonstrike anywhere) matches are permitted as carry-on items, but all matches are prohibited in checked baggage.