Are there nonstop flights from Changsha (CSX) to Zhengzhou (CGO)?

No. The fastest connection is via Yan'an, about 2h 42m of total flying time.

What is the fastest connection from Changsha (CSX) to Zhengzhou (CGO)?

via Yan'an ≈ 2h 42m, via Yiwu/Jinhua ≈ 2h 46m, via Hangzhou ≈ 2h 47m (estimated flying time, excluding layovers).

from 10,000 ANA miles, from 15,000 JAL miles (economy, one way, based on the published award charts).

Changsha Huanghua International Airport (CSX) to Zhengzhou Xinzheng International Airport (CGO)・707 km

No nonstop flights. The fastest connection is via Yan'an (ENY), about 2h 42m of flying time (layover not included).

With milesANA 10,000 miles+ (via CKG)JAL 15,000 miles+ (via SHA)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

22 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.