Are there nonstop flights from Bangkok (DMK) to Nakhon Phanom (KOP)?

Yes. Thai AirAsia, Thai Lion Air fly this route. Flight time is about 1h 11m.

Bangkok → Nakhon Phanom

Don Mueang International Airport (DMK) to Nakhon Phanom Airport (KOP)・579 km

Nonstop flights available (2 airlines). Flight time about 1h 11m. Nonstop return flights also operate.

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