Nitinai Sirismatthakarn, president of the AOT, said Monday the number of international passengers climbed 19.8 per cent to 61.34 million and the number of domestic passengers increased 25.0 per cent to 45.45 million.
Of total flights, 365,321 were international and 342,041 domestic.
The six airports are Suvarnabhumi, Don Mueang, Phuket, Chiang Mai, Mae Fah Luang Chiang Rai and Hat Yai.