Are there nonstop flights from Riyadh (RUH) to Changsha (CSX)?

No. The fastest connection is via Kathmandu, about 8h 45m of total flying time.

What is the fastest connection from Riyadh (RUH) to Changsha (CSX)?

via Kathmandu ≈ 8h 45m, via Guangzhou ≈ 9h 30m, via Shenzhen ≈ 9h 41m (estimated flying time, excluding layovers).

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

King Khalid International Airport (RUH) to Changsha Huanghua International Airport (CSX)・6,541 km

No nonstop flights. The fastest connection is via Kathmandu (KTM), about 8h 45m of flying time (layover not included).

With milesJAL 37,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.