Flights to Thailand are suspended 

This does not apply to state or military aircraft, emergency landing, technical landing without disembarkation, humanitarian aid, medical or relief flights, repatriation flights and cargo flights. Passengers will be subject to quarantine for a period of 14 days upon arrival.

The ban on international passenger flights has been extended to Apr 19. Until then, only these flights are allowed: medevac, state/military, humanitarian/relief, repatriation, cargo, and technical landings. If you’re operating one of these flights and have to stay overnight, you won’t have to go into quarantine providing you’ve been issued with approval to depart