Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Borneo to Macau as you normally would.
Due to the rapidly changing circumstances due to COVID-19, airlines like AirAsia flying from Borneo to Macau have implemented new flexible change policies.
The Borneo to Macau flight path was viewed by 68 users in the past month. Keep an eye out for changes in search interest prior to high and low season.