What this guide covers
- Everyday items that can be neither carried on board nor packed in a suitcase and checked
- How they differ from similar items that are allowed
Items marked "Not allowed" in tables 1 and 2 can be neither carried on board nor checked, on domestic or international flights.
1. Items that use explosives
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Fireworks | Not allowed | Not allowed |
| Crackers | Not allowed | Not allowed |
| Smoke markers (flares) | Not allowed | Not allowed |
| Cartridge case key chains and necklaces (made into accessories) | Allowed | Allowed |
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
2. Detergents, paints, chemicals and more
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Bleach, heavy-duty mold removers | Not allowed | Not allowed |
| Detergents labeled "chlorine-based" or "dangerous if mixed" | Not allowed | Not allowed |
| Paint, varnish, thinner, benzine | Not allowed | Not allowed |
| Adhesives | Not allowed | Not allowed |
| Insecticides, smoke-type insecticides, agricultural chemicals | Not allowed | Not allowed |
| Gasoline, kerosene, gas oil | Not allowed | Not allowed |
| Hydrochloric acid, sulfuric acid, ethanol, formalin, chloroform | Not allowed | Not allowed |
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
3. Similar items that are allowed
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Household detergents (other than bleach and mold removers) | Allowed | Allowed |
| Cleaning solutions (for contact lenses, false teeth, eyeglasses, etc.) | Allowed | Allowed |
| Aroma oil | Allowed | Allowed |
| Musical instrument oil (lubricating oil) | Allowed | Allowed |
Household detergents, cleaning solutions and aroma oil are treated as toiletries: 0.5L (kg) or less per container, and up to 2L (kg) per person together with medicines and spray cans. All of them are liquids, so on international flights the 100ml / clear bag rule also applies when you carry them on board (Liquid rules on flights). The document says to see the toiletries and medicines sections for disinfectant and sanitizing products. For insect repellent sprays you put on your skin, see Spray cans.
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
Some airlines have stricter rules. On international flights, rules of other countries' authorities may also apply.