Are there nonstop flights from London (LHR) to Dammam (DMM)?

Yes. Saudia fly this route. Flight time is about 6h 24m.

What is the fastest connection from London (LHR) to Dammam (DMM)?

via Frankfurt am Main ≈ 6h 54m, via Istanbul ≈ 6h 55m, via Kuwait City ≈ 6h 55m (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 Heathrow Airport (LHR) to King Fahd International Airport (DMM)・5,021 km

Nonstop flights available (1 airline). Flight time about 6h 24m. Nonstop return flights also operate.

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

20 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.