Dubai Airports has said that September traffic for Dubai International has seen a 25 per cent surge in year-on-year passenger numbers to 3,988,804, while international freight volumes grew by 11.3 per cent. Year to date passenger traffic went up 15.8 per cent to 34,838,359 million passengers, compared to 30,091,431 during the corresponding period last year. Cargo volumes saw double-digit growth for the twelfth consecutive month.