Are there nonstop flights from Seoul (GMP) to Okinawa (Naha) (OKA)?

No. The fastest connection is via Busan, about 2h 34m of total flying time.

What is the fastest connection from Seoul (GMP) to Okinawa (Naha) (OKA)?

via Busan ≈ 2h 34m, via Osaka ≈ 3h 22m, via Nagoya ≈ 3h 39m (estimated flying time, excluding layovers).

from 6,000 ANA miles, from 7,500 JAL miles (economy, one way, based on the published award charts).

Seoul Gimpo International Airport (GMP) to Naha International Airport (OKA)・1,266 km

No nonstop flights. The fastest connection is via Busan (PUS), about 2h 34m of flying time (layover not included).

With milesANA 6,000 miles+ (via HND)JAL 7,500 miles+ (via HND)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.