Are there nonstop flights from Amagi (TKN) to Osaka (KIX)?

No. The fastest connection is via Amami, about 2h 7m of total flying time.

What is the fastest connection from Amagi (TKN) to Osaka (KIX)?

via Amami ≈ 2h 7m, via Kagoshima ≈ 2h 10m (estimated flying time, excluding layovers).

Tokunoshima Airport (TKN) to Kansai International Airport (KIX)・950 km

No nonstop flights. The fastest connection is via Amami (ASJ), about 2h 7m of flying time (layover not included).

None.

2 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.