Beijing has extended the orange alert for heavy air pollution until Jan 7. From Jan 9 to 11, air quality is expected to improve, but is forecast to worsen again on Jan 12.

Korean Air has issued a schedule of anticipated flight cancellations through Jan10, 2017, because of strike action by its unionized pilots.

Approximately 15% of British Airways cabin crew will stage a 48-hour commencing on Jan 10.