What Items Can You Bring Through Airport Security?
QUICK ANSWER
You can bring most solid personal items through airport security in your carry-on. Liquids, gels, and aerosols follow the 3-1-1 rule: containers of 3.4 ounces or less in one quart bag. Weapons, flammables, and sharp objects are banned from the cabin, and some belong only in checked luggage.
Airport security has a lot of rules, but they follow a few clear patterns. Once you know how the TSA sorts items into carry-on, checked-only, and banned, most of the guesswork disappears. Here is the big-picture guide to what you can and cannot bring through the checkpoint, plus what has changed recently.
What can you bring through airport security?
Most everyday solid items are fine in your carry-on. According to the TSA, you can bring clothing, electronics, books, most food, toiletries, and personal items straight through the checkpoint. Larger electronics like laptops usually come out of your bag for screening unless you are in a lane with a newer CT scanner. The three buckets to keep in mind are: items allowed in carry-on, items allowed only in checked baggage, and items banned from the plane entirely. When you are unsure about a specific item, the TSA's 'What Can I Bring?' search tool gives a direct answer, and you can also message AskTSA for a quick ruling before you pack.
What is the rule for liquids, gels, and aerosols?
This is the rule that catches the most travelers: the 3-1-1 liquids rule. Any liquid, gel, cream, paste, or aerosol in your carry-on must be in a container of 3.4 ounces (100 milliliters) or less, and all of them must fit inside a single quart-size bag, one bag per passenger. That covers drinks, shampoo, toothpaste, lotion, and similar items. Anything larger goes in your checked bag. Important exceptions get more room in your carry-on: medically necessary liquids and medications, plus baby formula, breast milk, and juice, are allowed above 3.4 ounces if you declare them for separate screening. Powders over 12 ounces may also get extra screening.
Which items are prohibited in carry-on?
Some items are banned from the cabin but allowed in checked bags, and others are banned from the plane entirely. Sharp objects like knives, box cutters, and loose razor blades must go in checked luggage, wrapped safely. Sporting goods that could be used as a club, most tools longer than 7 inches, and self-defense sprays are also checked-only. Firearms are allowed only in checked baggage, unloaded, in a locked hard case, and declared to the airline. Fully banned from both bags are explosives and fireworks, flammable liquids and gases, and other hazardous materials. When something could be a weapon, assume it is checked-only and verify with the TSA tool.
What has changed at security recently?
A few recent updates are worth knowing. Airports with newer CT scanners let you leave your liquids bag and laptop inside your carry-on at those lanes, though the 3-1-1 limit itself still applies nationwide. TSA also ended its long-standing requirement to remove your shoes at the checkpoint, so you can generally keep them on. On identification, adults now need a REAL ID-compliant license or another accepted ID like a passport to fly; without one, some checkpoints charge a fee to verify your identity. These changes speed things up, but the core rules, especially 3-1-1 and the list of prohibited items, have not changed, so pack as if they still apply.
You can bring most solid personal items through airport security in your carry-on, while liquids follow the 3-1-1 rule and sharp objects, weapons, and flammables are restricted or banned. Newer CT scanners and the end of mandatory shoe removal have made screening faster, but the core rules still apply. When unsure, use the TSA 'What Can I Bring?' tool.
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