For a larger shipment, we usually use sea shipping, but for a smaller quantity, air freight is faster, and not as expensive as we tend to assume.
Any air couriers such as DHL, UPS, FedEx, TNT and etc, are available.
And the most popular one is EMS, operated by the Japanese Post Office, as it is by far the most economical while the delivery is very fast to all over the world.
The following is the tariff of EMS.
(It is indicated by JPY than USD as the exchange rate changes on a daily basis).