Korean Air Co. said Friday the cost of integrating Asiana Airlines Inc. could reach as much as 1 trillion won (US$654.02 million), with synergies from the merger expected to offset the expense as early as the end of 2028. During an investor relations session in Seoul, the flag carrier said an analysis of its post-merger integration (PMI) strategy estimated integration costs at between 900 billion won and 1 trillion won, while annual synergy effects from the merger are projected to reach around