Are there nonstop flights from Catania (CTA) to Osaka (KIX)?

No. The fastest connection is via Istanbul, about 12h 45m of total flying time.

What is the fastest connection from Catania (CTA) to Osaka (KIX)?

via Istanbul ≈ 12h 45m, via Helsinki ≈ 13h 12m, via Munich ≈ 13h 19m (estimated flying time, excluding layovers).

from 31,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Catania-Fontanarossa Airport (CTA) to Kansai International Airport (KIX)・9,913 km

No nonstop flights. The fastest connection is via Istanbul (IST), about 12h 45m of flying time (layover not included).

With milesANA 31,000 miles+ (via IST)JAL 45,000 miles+ (via HEL)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.