Are there nonstop flights from Seattle (SEA) to Beijing (PKX)?

No. The fastest connection is via Seoul, about 11h 55m of total flying time.

What is the fastest connection from Seattle (SEA) to Beijing (PKX)?

via Seoul ≈ 11h 55m, via Tokyo ≈ 12h 32m, via Shanghai ≈ 13h 3m (estimated flying time, excluding layovers).

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

Seattle–Tacoma International Airport (SEA) to Beijing Daxing International Airport (PKX)・8,740 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 11h 55m 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.

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.