Are there nonstop flights from Shenzhen (SZX) to Chicago (ORD)?

No. The fastest connection is via Seoul, about 15h 47m of total flying time.

What is the fastest connection from Shenzhen (SZX) to Chicago (ORD)?

via Seoul ≈ 15h 47m, via Taipei ≈ 16h 3m, via Tokyo ≈ 16h 19m (estimated flying time, excluding layovers).

from 22,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Shenzhen Bao'an International Airport (SZX) to Chicago O'Hare International Airport (ORD)・12,491 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 15h 47m of flying time (layover not included).

With milesANA 22,500 miles+ (via HND)JAL 45,000 miles+ (via ICN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

20 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.