Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kuching to Johannesburg as you normally would.
If you book a flight to Johannesburg from Kuching, you will be flying from Kuching, which is the city’s only airport. Kuching (KCH) is located 7.4 km from the centre of Kuching. There are 0 flights from Kuching to Johannesburg per day from 0 different airlines.