Frequently asked questions

Up to 2 per person (160Wh or less only; from April 24, 2026). They cannot be put in checked baggage.

Do not charge from a power bank. MLIT asks passengers to charge electronic devices using the onboard power outlets.

At a rated voltage of 3.7V, it is 74Wh, which is in the 100Wh-or-less category. In practice, calculate with the rated voltage or Wh shown on the product.

Neither power banks nor removed spare batteries can go in checked baggage. Carry them on board.

According to MLIT, the 100ml / clear bag rule applies to international flights. The quantity limits for toiletries, medicines and sprays (0.5L per container, 2L per person) also apply to domestic flights.

In the amount needed in the cabin, they are an exception to the 100ml limit. Declare them at security screening. In containers of 100ml or less, you can also carry them in the clear bag without declaring them.

It depends on the "INPUT" label on the product. South Korea uses 220V (per the IEC list), so if it says 100-240V, you can use it (plug types C, F). If it says only 100V, do not use it as is.

In the IEC list, the United States uses types A and B, the same as Japan (A, B). The voltage is 120V, so also check the product's "INPUT" label.

If the heating part and the battery can be separated, it is allowed in carry-on and checked baggage with conditions. If not, it is not allowed in either.

Yes, if they are not pointed and the blade (from tip to fulcrum) is 6cm or less. Small cosmetic scissors (for eyebrows, nose hair, etc.) and scissors in a portable sewing kit can also be carried on board. Put other scissors in checked baggage.

You can carry only one small lighter or box of matches for smoking, on your person. They cannot go in checked baggage.

Fireworks and crackers can be neither carried on board nor checked.

If you transfer abroad, you will be screened again at the transfer airport and it may be confiscated under that country's rules. Check with your airline in advance.

Yes, if it is 60cm or less when folded. Put longer ones in checked baggage.

Only when traveling with an infant, it is an exception to the 100ml limit in the amount needed on board. Declare it at security screening.

Wooden and bamboo swords cannot be carried on board. They can go in checked baggage.

Yes, needles used to administer self-injection medicines prescribed by a doctor (insulin, etc.) can be carried on board. They can also be checked.

In the IEC list, South Korea uses types C and F, and Japan's type A is not included. Bring a plug adapter (C, F). The voltage is 220V.

Under the flight rules: 24% or less has no quantity limit as dangerous goods, over 24% up to 70% is limited to 5L per person, and over 70% is not allowed. Customs duty-free allowances are separate rules.