http://press.jal.co.jp/en/release/201702/004166.html
The price of Singapore kerosene-type jet fuel during the two month period of December 2016 and January 2017 averaged US$64.43 per barrel, which accounted for 7,434 yen in the average exchange rate of 115.37 JPY/USD during the same period.
As a result, with reference to the fuel surcharge benchmark list for FY2017 in Japanese yen, this corresponds to zone B of fuel surcharges. From April 1 to May 31, 2017, it will range from 300 yen on a Japan – Korea ticket to 7,000 yen on Japan – USA ticket per person per sector flown, on tickets for travel originating in Japan.
For tickets issued in overseas regions, zone A will be used.