Small gas cartridges that do not use flammable or toxic gases (used in beauty instruments, soda makers, portable bicycle pumps, beer servers, etc.) are handled as follows.
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| 50ml or less per container | Allowed (up to 4 per person) | Allowed (up to 4 per person) |
| Over 50ml per container | Not allowed | Not allowed |
The document notes that for carbon dioxide, 50ml is equivalent to 28g.
Source
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Life jackets (with 2 cartridges fitted) | Allowed (up to 2 per person) | Allowed (up to 2 per person) |
| Spare cartridges | Up to 2 per life jacket allowed | Up to 2 per life jacket allowed |
| Spare cartridges only (without the life jacket) | Not allowed | Not allowed |
Only life jackets intended to be worn by a person. Pack them so they cannot be activated accidentally.
Source
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Gas cylinders for portable gas stoves and gas burners | Not allowed | Not allowed |
| Portable gas stoves, gas burners (the unit itself) | Allowed (with no gas left) | Allowed (with no gas left) |
| Fire extinguishers | Not allowed | Not allowed |
| Helium gas (voice-changing gas cans) | Not allowed | Not allowed |
| Gas springs for wheelchairs | Allowed | Allowed |
The document says that an electric wheelchair with a gas spring may not be allowed in the cabin depending on its size, so check with your airline in advance.
Source
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.