Why are there so few domestic flights from Bangkok late at night and early morning?

The limited availability of domestic flights from Bangkok late at night and early morning can be attributed to several factors including noise regulations, low demand for flights during those hours, and operational considerations of airports and airline schedules. Many airports in Thailand do not operate during late night/early morning hours due to noise restrictions, and airlines typically plan flights according to demand, which diminishes during these times. Additionally, some airports may lack facilities for night operations. On the other hand, there are early morning flights available to popular destinations.