The 3-1-1 liquids rule in plain terms, plus a straight yes/no on the 35+ things people actually ask about — carry-on versus checked — so you don't lose it at the checkpoint.
| Item | Carry-on | Checked | Notes |
|---|---|---|---|
| Water bottle (empty) | Yes | Yes | Fill up after security. |
| Water / drinks (full) | No | Yes | Over 3.4 oz liquid. |
| Toothpaste | ≤3.4 oz | Yes | Counts as a gel. |
| Deodorant (stick) | Yes | Yes | Gel/spray: ≤3.4 oz. |
| Sunscreen | ≤3.4 oz | Yes | Lotion & spray count as liquid. |
| Perfume / cologne | ≤3.4 oz | Yes | In the quart bag. |
| Makeup (liquid) | ≤3.4 oz | Yes | Powder/solid makeup is fine. |
| Razor (disposable/cartridge) | Yes | Yes | Safety-razor blades: checked only. |
| Electric razor | Yes | Yes | — |
| Scissors | <4 in | Yes | Blades under 4 in from pivot. |
| Pocket / utility knife | No | Yes | Any blade — checked only. |
| Multi-tool with blade | No | Yes | Bladeless multi-tools OK. |
| Nail clippers | Yes | Yes | Files & clippers are fine. |
| Tweezers | Yes | Yes | — |
| Lithium power bank | Yes | No | Spare batteries must be carry-on. |
| Laptop / tablet | Yes | Yes | Out of the bag at screening. |
| Vape / e-cigarette | Yes | No | Carry-on only; don't charge in flight. |
| Lighter | 1 only | No | One disposable/Zippo on you. |
| Matches | 1 book | No | Safety matches only; no strike-anywhere. |
| Medication (pills) | Yes | Yes | No limit; keep it in carry-on. |
| Medication (liquid) | Yes* | Yes | Over 3.4 oz OK — declare it. |
| Baby formula / breast milk | Yes* | Yes | Over 3.4 oz allowed — declare it. |
| Snacks (solid) | Yes | Yes | Sandwiches, chips, candy. |
| Peanut butter / yogurt / soup | ≤3.4 oz | Yes | Spreadable/pourable = liquid. |
| Alcohol (mini bottles) | ≤3.4 oz | Yes | Checked: under 70% ABV, ≤5 L. |
| Hairspray / aerosols | ≤3.4 oz | Yes | Toiletry aerosols only. |
| Powders (over 12 oz) | Screened | Yes | May need extra screening. |
| Umbrella | Yes | Yes | — |
| Knitting needles | Yes | Yes | — |
| Sporting bat / club | No | Yes | Bats, clubs, cues: checked. |
| Firearms | No | Yes | Declared, unloaded, locked case. |
| Snow globe | Small | Yes | Only if it looks under 3.4 oz. |
| CBD / cannabis | No | No | Federally restricted — avoid. |
| Disposable ice packs (gel) | If frozen | Yes | Must be solid at screening. |
| Corkscrew (no blade) | Yes | Yes | With blade: checked only. |
*Medically necessary and infant liquids are exempt from the 3.4 oz limit — declare them for separate screening. Rules shown are US TSA; other countries are similar but confirm. The TSA officer always has the final say.
Liquids, gels, creams and aerosols in your carry-on must be in containers of 3.4 oz (100 ml) or less, all fitting in one clear quart-size bag, one bag per passenger. Anything larger goes in checked luggage.
Only for medically necessary liquids, baby formula, breast milk and juice for infants. Those are allowed in larger amounts — tell the officer and they'll screen them separately. Everything else over 3.4 oz must be checked.
Carry-on only. Spare lithium batteries and power banks are banned from checked bags because of fire risk — keep them on you, in your cabin bag.
Yes. Toothpaste, and anything spreadable or pourable — peanut butter, yogurt, soft cheese — count as liquids/gels and must follow the 3.4 oz rule in carry-on.