Are there nonstop flights from Shenzhen (SZX) to Detroit (DTW)?

No. The fastest connection is via Shanghai, about 15h 56m of total flying time.

What is the fastest connection from Shenzhen (SZX) to Detroit (DTW)?

via Shanghai ≈ 15h 56m, via Seoul ≈ 15h 56m, via Tokyo ≈ 16h 32m (estimated flying time, excluding layovers).

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

Shenzhen Bao'an International Airport (SZX) to Detroit Metropolitan Wayne County Airport (DTW)・12,591 km

No nonstop flights. The fastest connection is via Shanghai (PVG), about 15h 56m of flying time (layover not included).

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

None.

10 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.