Are there nonstop flights from Prague (PRG) to Osaka (KIX)?

No. The fastest connection is via Helsinki, about 11h 39m of total flying time.

What is the fastest connection from Prague (PRG) to Osaka (KIX)?

via Helsinki ≈ 11h 39m, via Seoul ≈ 11h 42m, via Beijing ≈ 11h 51m (estimated flying time, excluding layovers).

from 31,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Václav Havel Airport Prague (PRG) to Kansai International Airport (KIX)・8,975 km

No nonstop flights. The fastest connection is via Helsinki (HEL), about 11h 39m of flying time (layover not included).

With milesANA 31,000 miles+ (via ICN)JAL 37,000 miles+ (via HEL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

13 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.