Are there nonstop flights from Vientiane (VTE) to Shenzhen (SZX)?

Yes. Donghai Airlines fly this route. Flight time is about 2h.

What is the fastest connection from Vientiane (VTE) to Shenzhen (SZX)?

via Haikou ≈ 2h 33m, via Hanoi ≈ 2h 34m, via Nanning ≈ 2h 36m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 18,000 ANA miles (economy, one way, based on the published award charts).

Wattay International Airport (VTE) to Shenzhen Bao'an International Airport (SZX)・1,280 km

Nonstop flights available (1 airline). Flight time about 2h. Nonstop return flights also operate.

With milesJAL 15,000 miles+ (via KMG)ANA 18,000 miles+ (via BKK)Economy, one way, estimate. Tap a connection for miles by cabin.

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.