Asiana Airlines shares were up 30 percent.
Affiliates Air Busan and Asiana IDT rose 29.80 percent and 29.78 percent, respectively.
Local media reported that the South Korean carrier's parent, Kumho Asiana Group, had agreed to sell a stake in the airline, according to Reuters.
Amid ongoing negotiations, Kumho Asiana Group is expected to submit a fresh revamp plan after the top shareholder in Asiana, Kumho Industrial, holds a board meeting on Monday, Reuters reported.
Customs data showed China's March exports were higher than expected: Dollar-denominated exports rose 14.2 percent on-year, topping prediction of a 7.3 percent gain, according to a Reuters poll.