Are there nonstop flights from London (LHR) to Kigali (KGL)?

Yes. RwandAir fly this route. Flight time is about 8h 16m.

What is the fastest connection from London (LHR) to Kigali (KGL)?

via Paris ≈ 8h 47m, via Brussels ≈ 8h 54m, via Amsterdam ≈ 9h 4m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

London Heathrow Airport (LHR) to Kigali International Airport (KGL)・6,605 km

Nonstop flights available (1 airline). Flight time about 8h 16m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via BRU)JAL 37,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

13 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.