TSA Prohibited Items List 2023: What Travelers Needed to Know

In 2023, the Transportation Security Administration (TSA) maintained a detailed set of rules about what could and could not be carried onto flights, both in carry-on bags and checked luggage. The goal was to keep passengers safe while minimizing delays at security checkpoints. This article synthesizes what was widely enforced in 2023, clarifies common categories, and highlights practical tips for travelers preparing for air travel.

Understanding the TSA Prohibited Items Scope

The TSA prohibits items that pose safety risks or could be repurposed as weapons. The list is split across two primary categories: items not allowed in carry-ons and items not allowed in either carry-ons or checked bags. This distinction matters because some items may be allowed in checked bags but not in carry-ons, reflecting different risk profiles at security checkpoints.

The core idea behind the 2023 rules was to prevent dangerous items from entering the passenger cabin, while allowing some items to be transported in checked luggage under proper packaging and labeling. For example, many liquids, aerosols, and gels had strict volume limits in carry-ons, and certain tools or weapons were outright banned in both bag types. Travelers needed to check both the general prohibitions and any airline-specific or country-specific restrictions that could apply to their itinerary.

Carry-On Prohibited Items: What You Could Not Bring

Carry-on prohibitions typically include items with potential for harm if accessed during flight, as well as items that create security risks during screening. In 2023, common categories included:

Explosives and fireworks
Fuels, flammable liquids, and aerosols above allowed limits
Weapons and replicas (guns, knives over a certain length, brass knuckles, switchblades, martial-arts weapons)
Certain sporting goods that could be used as weapons (bats, hockey sticks, golf clubs of a certain length)
Tools exceeding certain lengths or weights (hammers, crowbars, power tools)
Liquids, gels, and aerosols in volumes exceeding 3.4 ounces (100 milliliters) per item, packed in a single, quart-sized, clear plastic bag
Self-defense items (pepper spray, tear gas, stun guns) in most cases
Hoverboards and other large battery-powered devices with lithium-ion batteries beyond limits
Liquid oxygen devices, large camping stoves, and certain chemical kits

Note: Some items that seem innocuous can still be restricted due to material composition, battery status, or packaging. Always check before packing, especially for items like lithium batteries, which have nuanced rules about quantity, watt-hour (Wh) ratings, and how terminals must be protected.

Checked Luggage Prohibitions: What May Be Forbidden to Check

While many items are allowed in checked baggage, several items are prohibited or require special handling. In 2023, typical restrictions included:

Explosives, ammunition, and pyrotechnics
Large quantities of liquids, paints, solvents, or hazardous materials that violate hazmat rules
Compressed gases and hazardous chemicals
Weapons and certain tools classified as dangerous goods if they pose a risk in the cargo hold
Items that could become dangerous during transport if not properly secured

Because checked baggage undergoes different handling and screening, the rules for prohibited items can differ from those in carry-on restrictions. It’s essential to verify any item’s eligibility for checked baggage with the airline and TSA guidance for the specific flight path.

Liquids, Gels, and Aerosols: The 3-1-1 Rule and Exceptions

The 3-1-1 rule was a cornerstone of the liquids policy in 2023: passengers may bring liquids in containers of 3.4 ounces (100 milliliters) or less, all containers must fit within a single qu