Vietnam Airlines had the most delayed flights with 1,740, while the figure for low-cost carrier Vietjet Air was 1,402. — Photo vneconomy.vn

Five domestic airlines reported 3,933 delayed flights in July, reported the Civil Aviation Authority of Vietnam (CAAV).

The five airlines operated a total of 29,939 flights during the month. They included Vietnam Airlines, Vietjet Air, Jetstar Pacific, Vietnam Air Services Company (VASCO) and Bamboo Airways.

Vietnam Airlines had the highest number of delayed flights with 1,740, while low-cost airline Vietjet Air had 1,402.

Budget carrier Jetstar Pacfic delayed 602 flights; Bamboo Airways and Vasco reported 103 and 86 delayed flights in the month, respectively.

According to the CAAV, the late return of planes was the main cause of delays, accounting for 61.8 per cent. Other reasons included airports’ limited infrastructure and services, flight management and operation, weather and technical issues, the agency said.

The total number of cancelled flights in the reviewed month was 38, of which Vietnam Airlines had the most with 17 and VASCO ranked second with 14. Jetstar Pacific and Bamboo Airways had no cancelled flights in July.

The on-time performance index of Vietnam Airlines was 86.4 per cent, Vietjet Air was 87.1 per cent, Jetstar Pacific was 82.7 per cent.

Meanwhile, VASCO and Bamboo Airways's on-time performance index were 92 per cent and 93.8 per cent, respectively.

Vietnamese airlines currently operate 48 domestic routes connecting 22 airports. — VNS