Are there nonstop flights from Yasuru (KSX) to Kupang (KOE)?

Yes. Susi Air fly this route. Flight time is about 3h 27m.

Yasuru → Kupang

Yasuru Airport (KSX) to El Tari Airport (KOE)・2,507 km

Nonstop flights available (1 airline). Flight time about 3h 27m. Nonstop return flights also operate.

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