The affected flights are VN592, VN593, VN594, and VN595. Two more flights between HCM city and Hong Kong, VN598 scheduled for Sunday and VN599 scheduled for Monday, will also be delayed. Affected passengers will be arranged to board flights scheduled for the next day. More information is available at www.vietnamairlines.com; www.facebook.com/vietnamairlines; or Vietnam Airlines' customer service at 1900 1100.