Are there nonstop flights from Kuala Lumpur (KUL) to Sanya (SYX)?

Yes. Batik Air Malaysia, Firefly fly this route. Flight time is about 2h 46m.

What is the fastest connection from Kuala Lumpur (KUL) to Sanya (SYX)?

via Phnom Penh ≈ 3h 16m, via Singapore ≈ 3h 40m, via Bangkok ≈ 3h 41m (estimated flying time, excluding layovers).

from 18,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Kuala Lumpur International Airport (KUL) to Sanya Phoenix International Airport (SYX)・1,923 km

Nonstop flights available (2 airlines). Flight time about 2h 46m. Nonstop return flights also operate.

With milesANA 18,000 miles+ (via SZX)JAL 23,000 miles+ (via KMG)Economy, one way, estimate. Tap a connection for miles by cabin.

15 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.