Are there nonstop flights from Bangkok (DMK) to Nakhon Si Thammarat (NST)?

Yes. Thai AirAsia, Thai Lion Air, Nok Air fly this route. Flight time is about 1h 12m.

Bangkok → Nakhon Si Thammarat

Don Mueang International Airport (DMK) to Nakhon Si Thammarat Airport (NST)・602 km

Nonstop flights available (3 airlines). Flight time about 1h 12m. Nonstop return flights also operate.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.