From July 9, AirAsia will resume its services from Thailand’s Bangkok (Don Mueang) to Sri Lanka’s Colombo, flying four times a week. The airline will depart Don Mueang Airport in Bangkok and arrive at Bandaranaike International Airport in Colombo on every Monday, Wednesday, Friday and Sunday.

Source: https://www.ttgasia.com/2023/05/22/airasia-to-fly-four-times-weekly-to-colombo/