China Southern Airlines stock fell 5.20% during intraday trading on Thursday, reflecting broader pressure on aviation stocks.

The decline follows U.S. President Trump's televised address warning of potential military strikes against Iran, which dampened market hopes for a swift resolution to Middle East tensions and triggered a significant surge in international oil prices. Fuel costs constitute approximately 35% of airline operating expenses, and the sharp rise in oil prices is expected to negatively impact airline profitability.

While the favorable supply-demand environment in China's aviation market and the potential for fuel surcharges may help mitigate some of the cost pressure, the immediate market reaction has been negative for airline stocks facing higher operating costs.