Are there nonstop flights from Antisiranana (DIE) to Sambava (SVB)?

Yes. Air Madagascar fly this route. Flight time is about 47m.

Antisiranana → Sambava

Arrachart Airport (DIE) to Sambava Airport (SVB)・235 km

Nonstop flights available (1 airline). Flight time about 47m. Nonstop return flights also operate.

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