China's three largest state-owned airlines posted first-half losses for the seventh straight year, hit by soaring jet fuel costs, with a weak summer season dimming the outlook for the rest of the year.

Air China, China Eastern Airlines and China Southern Airlines posted combined first-half net losses of about 8.2 billion yuan ($1.22 billion), having warned last month the figure could ​reach as high as 9 billion yuan.

The losses were a sharp reversal from their combined first quarter ​profit ⁠of 4.82 billion yuan, which was boosted by strong Lunar New Year demand, and sent their shares lower in mainland China and Hong Kong trading on Monday.

Flag carrier Air China reported a net loss of 2.3 billion yuan, widening from a 1.81 billion yuan loss a year earlier. China Eastern posted a loss of 2.2 billion yuan, versus a 1.43 billion yuan loss in the same period of 2025. China Southern reported a loss of 3.7 billion yuan, compared with a loss of 1.53 billion yuan a year earlier.

The weak results underscored the post-pandemic fragility of China's aviation sector, as the trio confronted what China Eastern described as a profit environment "severely undermined" by disrupted international routes and persistently elevated jet fuel prices linked to the Middle East conflict.