Are there nonstop flights from Split (SPU) to Tokyo (NRT)?

No. The fastest connection is via Warsaw, about 12h 20m of total flying time.

What is the fastest connection from Split (SPU) to Tokyo (NRT)?

via Warsaw ≈ 12h 20m, via Vienna ≈ 12h 22m, via Helsinki ≈ 12h 31m (estimated flying time, excluding layovers).

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

Split Saint Jerome Airport (SPU) to Narita International Airport (NRT)・9,542 km

No nonstop flights. The fastest connection is via Warsaw (WAW), about 12h 20m of flying time (layover not included).

With milesANA 31,000 miles+ (via WAW)JAL 45,000 miles+ (via HEL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.