Are there nonstop flights from London (STN) to Riyadh (RUH)?

No. The fastest connection is via Munich, about 6h 46m of total flying time.

What is the fastest connection from London (STN) to Riyadh (RUH)?

via Munich ≈ 6h 46m, via Salzburg ≈ 6h 47m, via Istanbul ≈ 6h 47m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

London Stansted Airport (STN) to King Khalid International Airport (RUH)・4,910 km

No nonstop flights. The fastest connection is via Munich (MUC), about 6h 46m of flying time (layover not included).

With milesJAL 23,000 miles+ (via AMM)ANA 30,000 miles+ (via MUC)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

34 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.