It will need to consult with the Centre for Covid-19 Situation Administration (CCSA) before deciding whether to open Thai skies to international traffic, he added.
CAAT has given the green light for certain groups of foreigners to enter Thailand from July 1.
The 11 groups permitted to fly into the country range from Thai nationals to foreigners and their carers seeking medical treatment in Thailand (except for Covid-19).
All arrivals will be tested for Covid-19 and must follow CCSA and Department of Disease Control rules, including mandatory two-week quarantine.