Are there nonstop flights from Tarakan (TRK) to Maratua (RTU)?

Yes. Susi Air fly this route. Flight time is about 42m.

Tarakan → Maratua

Juwata International Airport / Suharnoko Harbani AFB (TRK) to Maratua Airport (RTU)・170 km

Nonstop flights available (1 airline). Flight time about 42m. Nonstop return flights also operate.

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