Americans planning to fly on Halloween could face delays at airport security checkpoints if their costumes include metal accessories, realistic weapons, or face coverings that interfere with identification. The Transportation Security Administration permits passengers to wear Halloween costumes on commercial flights, but certain props and accessories are subject to restrictions that could complicate travel.

Costumes featuring metal armor, chains, and other metallic pieces may trigger security alarms and lead to additional screening. Travelers are advised to remove detachable metal accessories before reaching the checkpoint and pack them in their carry-on bags.

Some Halloween props are prohibited entirely. Replica explosives, including fake bombs, grenades, and rocket launchers, are not permitted in either carry-on or checked baggage, even when they are clearly intended as costume accessories.

Other props, including fake knives, swords, pitchforks, lightsabers and witch brooms, may be allowed in checked luggage but should not be brought through security in carry-on bags, according to travel industry guidance cited by the Democrat and Chronicle. Thomas Spagnola, a senior executive at travel technology company Fareportal, discussed the restrictions as part of advice for Halloween travelers.

TSA officers retain the final authority to determine whether questionable items can pass through airport security.

Masks and elaborate makeup can also create complications. Travelers wearing masks or other face coverings that prevent officers from verifying their identities should be prepared to remove them during screening. Heavy makeup that obscures facial features could likewise prompt additional checks.

Federal restrictions on liquids and powders also apply to Halloween makeup and costume supplies. Fake blood, liquid latex, and other liquid cosmetics must comply with the TSA's 3-1-1 rule for carry-on baggage. Liquids must be stored in containers holding no more than 3.4 ounces each and fit inside a single quart-sized, clear, resealable bag.

Larger containers must be packed in checked luggage. Powdered makeup exceeding 12 ounces may require additional screening, and the TSA recommends placing larger quantities in checked baggage to reduce the likelihood of delays.

Travelers can avoid unnecessary complications by reviewing the rules before leaving home, packing restricted props in checked luggage when permitted, and keeping identification accessible. Although wearing a costume is generally allowed, accessories that resemble weapons or explosives, obscure a passenger's face, or trigger screening equipment can turn a Halloween flight into a longer trip through airport security.