Are there nonstop flights from Osaka (KIX) to Nadi (NAN)?

No. The fastest connection is via Tokyo, about 9h 57m of total flying time.

What is the fastest connection from Osaka (KIX) to Nadi (NAN)?

via Tokyo ≈ 9h 57m, via Cairns ≈ 11h 47m, via Brisbane ≈ 12h 34m (estimated flying time, excluding layovers).

from 40,000 JAL miles (economy, one way, based on the published award charts).

Kansai International Airport (KIX) to Nadi International Airport (NAN)・7,320 km

No nonstop flights. The fastest connection is via Tokyo (NRT), about 9h 57m of flying time (layover not included).

With milesJAL 40,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

7 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.