Are there nonstop flights from Yoron (RNJ) to Osaka (KIX)?

No. The fastest connection is via Amami, about 2h 14m of total flying time.

What is the fastest connection from Yoron (RNJ) to Osaka (KIX)?

via Amami ≈ 2h 14m, via Kagoshima ≈ 2h 17m, via Okinawa (Naha) ≈ 2h 32m (estimated flying time, excluding layovers).

Yoron Airport (RNJ) to Kansai International Airport (KIX)・1,049 km

No nonstop flights. The fastest connection is via Amami (ASJ), about 2h 14m of flying time (layover not included).

None.

3 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.