Are there nonstop flights from Changsha (CSX) to London (LHR)?

Yes. Hainan Airlines fly this route. Flight time is about 11h 9m.

What is the fastest connection from Changsha (CSX) to London (LHR)?

via Xi'an ≈ 11h 39m, via Chongqing ≈ 11h 50m, via Chengdu ≈ 11h 52m (estimated flying time, excluding layovers).

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

Changsha Huanghua International Airport (CSX) to London Heathrow Airport (LHR)・9,054 km

Nonstop flights available (1 airline). Flight time about 11h 9m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via ICN)JAL 40,000 miles+ (via HKG)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.