Are there nonstop flights from Jeju City (CJU) to Osaka (KIX)?

Yes. Trinity Airways fly this route. Flight time is about 1h 27m.

What is the fastest connection from Jeju City (CJU) to Osaka (KIX)?

via Fukuoka ≈ 1h 58m, via Busan ≈ 2h 2m, via Daegu ≈ 2h 7m (estimated flying time, excluding layovers).

from 9,000 ANA miles, from 12,000 JAL miles (economy, one way, based on the published award charts).

Jeju International Airport (CJU) to Kansai International Airport (KIX)・813 km

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

With milesANA 9,000 miles+ (via GMP)JAL 12,000 miles+ (via GMP)Economy, one way, estimate. Tap a connection for miles by cabin.

11 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.