Hainan Airlines (SHA:600221) posted a 1.8% year-over-year rise to 13.8 billion yuan in revenue passenger kilometers in August.
Available seat kilometers, a measure of passenger capacity, rose 1.6% to 15.8 billion, according to a Thursday filing with the Shanghai bourse.
The company's cargo and mail volume slipped 7.0% to 50,620 tonnes.
Shares of the carrier slid 1% in recent trade.