Are there nonstop flights from Porto (OPO) to Beijing (PKX)?

No. The fastest connection is via Amsterdam, about 12h 9m of total flying time.

What is the fastest connection from Porto (OPO) to Beijing (PKX)?

via Amsterdam ≈ 12h 9m, via Frankfurt am Main ≈ 12h 10m, via Milan ≈ 12h 19m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Francisco de Sá Carneiro Airport (OPO) to Beijing Daxing International Airport (PKX)・9,460 km

No nonstop flights. The fastest connection is via Amsterdam (AMS), about 12h 9m of flying time (layover not included).

With milesANA 30,000 miles+ (via FRA)JAL 45,000 miles+ (via CMN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.