Are there nonstop flights from Okinawa (Naha) (OKA) to Singapore (SIN)?

Yes. Scoot fly this route. Flight time is about 4h 54m.

What is the fastest connection from Okinawa (Naha) (OKA) to Singapore (SIN)?

via Kaohsiung ≈ 5h 27m, via Taipei ≈ 5h 33m, via Fuzhou ≈ 5h 42m (estimated flying time, excluding layovers).

from 13,000 JAL miles, from 15,000 ANA miles (economy, one way, based on the published award charts).

Naha International Airport (OKA) to Singapore Changi Airport (SIN)・3,745 km

Nonstop flights available (1 airline). Flight time about 4h 54m. Nonstop return flights also operate.

With milesJAL 13,000 miles+ (via HND)ANA 15,000 miles+ (via HND)Economy, one way, estimate. Tap a connection for miles by cabin.

16 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

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