Are there nonstop flights from Phuket (HKT) to Sharjah (SHJ)?

Yes. Air Arabia fly this route. Flight time is about 6h 17m.

What is the fastest connection from Phuket (HKT) to Sharjah (SHJ)?

via Hyderabad ≈ 6h 47m, via Mumbai ≈ 6h 47m, via Muscat ≈ 6h 48m (estimated flying time, excluding layovers).

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

Phuket International Airport (HKT) to Sharjah International Airport (SHJ)・4,915 km

Nonstop flights available (1 airline). Flight time about 6h 17m. Nonstop return flights also operate.

With milesJAL 23,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

17 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.