Are there nonstop flights from London (LHR) to Beijing (PKX)?

Yes. China Southern Airlines fly this route. Flight time is about 10h 9m.

What is the fastest connection from London (LHR) to Beijing (PKX)?

via Helsinki ≈ 10h 38m, via Amsterdam ≈ 10h 42m, via Frankfurt am Main ≈ 10h 59m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 40,000 JAL miles (economy, one way, based on the published award charts).

London Heathrow Airport (LHR) to Beijing Daxing International Airport (PKX)・8,197 km

Nonstop flights available (1 airline). Flight time about 10h 9m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via FRA)JAL 40,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

39 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.