Are there nonstop flights from Muscat (MCT) to Split (SPU)?

No. The fastest connection is via Istanbul, about 6h 12m of total flying time.

What is the fastest connection from Muscat (MCT) to Split (SPU)?

via Istanbul ≈ 6h 12m, via Vienna ≈ 6h 58m, via Rome ≈ 6h 58m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 40,000 JAL miles (economy, one way, based on the published award charts).

Muscat International Airport (MCT) to Split Saint Jerome Airport (SPU)・4,413 km

No nonstop flights. The fastest connection is via Istanbul (IST), about 6h 12m of flying time (layover not included).

With milesANA 30,000 miles+ (via IST)JAL 40,000 miles+ (via LHR)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.