Taiwan's China Airlines lost TWD257.1 million ($7.8 million) in the second quarter, double its TWD124.1 million loss in the year-ago quarter, according to a filing with the Taiwan stock exchange cited by the Associated Press in Taipei.Revenues climbed 12% to TWD28.86 billion, but "oil remained our main problem in the second quarter, with fuel accounting for over 40% of costs," a spokesperson said.

The airline's half-year profit plunged 82% year-over-year to TWD128.1 million from the TWD694.8 million earned in the year-ago period, the AP reported. Six-month revenues increased 14% to TWD56.65 billion.

Separately, China Airlines will increase service on its Kaohsiung-Nagoya and Taipei-Guam routes in October to four-times-weekly from twice.