Are there nonstop flights from Bangkok (DMK) to Phitsanulok (PHS)?

Yes. Thai AirAsia, Thai Lion Air, Nok Air fly this route. Flight time is about 53m.

Bangkok → Phitsanulok

Don Mueang International Airport (DMK) to Phitsanulok Airport (PHS)・321 km

Nonstop flights available (3 airlines). Flight time about 53m. Nonstop return flights also operate.

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