Are there nonstop flights from Shenzhen (SZX) to Mexico City (MEX)?

Yes. China Southern Airlines fly this route. Flight time is about 17h 7m.

What is the fastest connection from Shenzhen (SZX) to Mexico City (MEX)?

via Seoul ≈ 17h 38m, via Los Angeles ≈ 17h 38m, via Vancouver ≈ 17h 41m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 55,000 JAL miles (economy, one way, based on the published award charts).

Shenzhen Bao'an International Airport (SZX) to Mexico City Benito Juárez International Airport (MEX)・14,130 km

Nonstop flights available (1 airline). Flight time about 17h 7m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via NRT)JAL 55,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

12 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.