Are there nonstop flights from New Delhi (DEL) to Shenzhen (SZX)?

No. The fastest connection is via Hanoi, about 5h 31m of total flying time.

What is the fastest connection from New Delhi (DEL) to Shenzhen (SZX)?

via Hanoi ≈ 5h 31m, via Yangon ≈ 6h 3m, via Bangkok ≈ 6h 26m (estimated flying time, excluding layovers).

from 18,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Indira Gandhi International Airport (DEL) to Shenzhen Bao'an International Airport (SZX)・3,725 km

No nonstop flights. The fastest connection is via Hanoi (HAN), about 5h 31m of flying time (layover not included).

With milesANA 18,000 miles+ (via HAN)JAL 23,000 miles+ (via PVG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

15 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.