China Eastern Airlines is offering a same-day Business Class upgrade service through December 31 for flights departing Shizuoka (Japan) on the Shizuoka–Shanghai/Pudong route.
The fee is a flat JPY 15,000 from any Economy Class fare. Payment methods accepted are cash, WeChat Pay, Alipay, and credit card. Applications are handled at the check-in counter at Shizuoka Airport in Japan, and upgrades can be purchased only on the day of departure if Business Class seats are available.
