Carry-On Packing Checklist: What TSA Actually Allows
The categories that cause the most confusion when you're packing — liquids, batteries, sharp items, food, and the bag itself.
Most people packing a carry-on already know the basics — no full-size shampoo, no pocket knife. The confusion starts at the edges: a power bank that has to ride in the cabin, hummus that gets pulled at the checkpoint, scissors that are fine one day and not the next depending on blade length. This checklist groups the categories that generate the most TSA confiscations and "wait, really?" moments, with the current status pulled live from our full catalog so it never goes stale.
Liquids, gels, and toiletries
Anything liquid, gel, or paste in your carry-on has to fit in a container of 3.4 oz (100 mL) or less, with all your containers together in a single quart-size bag. There's no restriction at all in checked baggage. For the fuller picture of what actually counts as a "liquid" — including foods most people don't expect — see the liquids-rule guide.
Electronics and batteries
The rule that trips people up isn't about the device — it's about whether the battery is installed or loose. A laptop or phone with its battery installed can technically go in a checked bag (not recommended). A spare, uninstalled battery or power bank can never go in checked baggage, full stop — it has to be in the cabin so a crew member can respond if it overheats. See Flying With Batteries & Electronics for the watt-hour limits.
Sharp and pointed items
TSA's sharp-object rules come down to blade length and blade type, not the item's purpose. Scissors are judged by blade length measured from the pivot point; knives with a folding or fixed blade are banned from carry-on regardless of size, with no small-blade exception the way scissors get one.
Food and snacks
Solid food has no restriction at all. The category that actually causes confiscations is spreadable, pourable, or gel-like food — TSA treats it the same as a liquid, and it's one of the most common reasons people lose something at the checkpoint without realizing why.
The bag itself
TSA doesn't set size or weight limits for carry-on or checked bags — that's entirely your airline's call, and it varies by carrier and sometimes by fare class. TSA only screens what's inside. Confirm your airline's dimensions before you buy a bag assuming it'll fit in the overhead bin.
Related rules
FAQ
- Does TSA restrict how big my carry-on bag can be?
- No — bag size and weight limits are set entirely by your airline, not TSA. TSA only screens what's inside the bag.
- What's the single most common reason items get confiscated at security?
- Liquids and gels over the 3.4 oz limit, including foods people don't expect to count as liquids — spreads, dips, and creamy foods like hummus and peanut butter.