Are there nonstop flights from Barcelona (BCN) to Changsha (CSX)?

No. The fastest connection is via London, about 13h of total flying time.

What is the fastest connection from Barcelona (BCN) to Changsha (CSX)?

via London ≈ 13h, via Shenzhen ≈ 13h 32m, via Hong Kong ≈ 13h 36m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Josep Tarradellas Barcelona-El Prat Airport (BCN) to Changsha Huanghua International Airport (CSX)・9,543 km

No nonstop flights. The fastest connection is via London (LHR), about 13h of flying time (layover not included).

With milesANA 30,000 miles+ (via ICN)JAL 45,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.