Are there nonstop flights from Colombo (CMB) to Batticaloa (BTC)?

Yes. Cinnamon Air fly this route. Flight time is about 45m.

Colombo → Batticaloa

Bandaranaike International Colombo Airport (CMB) to Batticaloa International Airport (BTC)・206 km

Nonstop flights available (1 airline). Flight time about 45m. Nonstop return flights also operate.

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