The short answer: most everyday items are fine in your carry-on, a few must go in checked baggage, and a handful are banned from the plane entirely. The rules turn on two things — whether an item is a liquid and whether it is sharp or flammable.
This is the master list of what you can bring on a plane, with a quick yes/no table for the items people ask about most, and links to a detailed guide for each. These are US TSA rules, which most travelers are searching for. Other authorities — the UK, EU and the UAE’s GCAA — follow similar but not identical limits, and the final call always rests with the security officer and your airline. Check before you fly.
Table of Contents
The One Rule That Decides Most of It: Liquids
Almost every “can I bring this?” question comes down to the TSA 3-1-1 liquids rule. In your carry-on, every liquid, gel, aerosol, cream or paste must be in a container of 3.4 oz (100 ml) or less, and they all have to fit in a single quart-size zip bag — one bag per passenger. Anything bigger goes in checked baggage. Our full 3-1-1 rule guide and liquids in checked baggage cover the exceptions.
Solid versions of the same product skip the rule entirely: a stick deodorant, a bar of soap or a solid perfume has no liquid limit. That single distinction answers most of the list below.
What Can You Bring on a Plane? Quick Yes/No Table
Here is the fast answer for the most-searched items. “Carry-on” means your cabin bag; “Checked” means the hold.
| Item | Carry-on | Checked | Notes |
|---|---|---|---|
| Water & drinks | Only ≤3.4 oz | Yes | Bring an empty bottle and fill it past security |
| Food (solid) | Yes | Yes | Snacks, sandwiches, solid fruit — all fine |
| Food (liquid/spread) | Only ≤3.4 oz | Yes | Peanut butter, yogurt, soup follow 3-1-1 |
| Razors (disposable/electric) | Yes | Yes | Loose safety-razor blades: checked only |
| Nail clippers | Yes | Yes | Allowed despite the myth |
| Scissors | Blades ≤4 in | Yes | Longer blades must be checked |
| Lighter | One only | No* | Torch lighters banned; *checked only in an approved case |
| Matches | One book (safety) | No | Strike-anywhere matches banned everywhere |
| Medication (pills) | Yes | Yes | No quantity limit; carry-on recommended |
| Medication (liquid) | Yes, >3.4 oz | Yes | Declare it at screening |
| Alcohol | Mini bottles ≤3.4 oz | Yes, with limits | Over 70% ABV banned |
| Aerosols | Only ≤3.4 oz | Yes, with limits | Non-flammable toiletries only in carry-on |
| Laptop & electronics | Yes | Yes (not advised) | Lithium batteries must fly in the cabin |
| Power bank / spare batteries | Yes | No | Lithium batteries are banned from checked bags |
| Vape / e-cigarette | Yes | No | Cabin only, never in checked baggage |
Need to know your bag will fit before you pack it? Check the carry-on size limits, personal item limits and checked bag limits, or run your airline through the baggage fee calculator.
Items With Their Own Rules
A few categories are asked about so often they have a dedicated guide. Tap through for the full detail:
- Food and snacks on a plane — what counts as a liquid, plus baby food and fresh produce
- Razors on a plane — disposable, electric, safety and straight razors
- Nail clippers and scissors — the 4-inch blade rule and what stays in checked
- Lighters and matches — the one-lighter rule and what is banned
- Medication on a plane — liquid meds, insulin and prescriptions
- Alcohol on a plane — carry-on minis, checked limits and duty-free
- Bringing a dog on a plane — in-cabin carriers, fees and screening
What You Cannot Bring on a Plane at All
A small set of items is banned from both the cabin and the hold: strike-anywhere matches, torch and jet lighters, self-defense sprays over 4 oz, most fireworks and flares, and any flammable liquid or gas. Spare lithium batteries and power banks are the reverse case — allowed only in the cabin, never in checked baggage, because of fire risk.
When in doubt, the TSA “What Can I Bring?” tool has a searchable A-Z, but the officer at the checkpoint always has the final say.
Frequently Asked Questions
What items are not allowed on a plane?
Strike-anywhere matches, torch lighters, self-defense sprays, fireworks and flammable liquids are banned entirely. Sharp items over the size limit, and liquids over 3.4 oz, are banned from carry-on but allowed in checked baggage. Spare lithium batteries and power banks are banned from checked bags but allowed in the cabin.
What can I bring in my carry-on?
Solid food, electronics, one lighter, nail clippers, disposable and electric razors, medication, and any liquid in a container of 3.4 oz or less that fits in your quart bag. Larger liquids, and loose razor blades, must go in checked baggage.
Can you bring a water bottle on a plane?
Yes, but it must be empty through security — a full bottle exceeds the 3.4 oz liquid limit. Bring an empty reusable bottle and fill it at a fountain after the checkpoint.
How much liquid can you bring on a plane?
In carry-on, containers of 3.4 oz (100 ml) or less, all fitting in one quart-size bag. Larger quantities go in checked baggage. See our full 3-1-1 rule guide for the exceptions like medication and baby food.
Does TSA check food?
Yes. Solid food can stay in your bag, but TSA may ask you to remove it for a clearer X-ray. Liquid or spreadable foods over 3.4 oz will be stopped at carry-on screening.
Is the checked-bag list different from carry-on?
Yes. Checked bags allow larger liquids and sharp items but ban spare lithium batteries, power banks and loose e-cigarettes. Carry-on bans large liquids and most blades but is the only place batteries may fly.