Are there nonstop flights from Mexico City (MEX) to Porto (OPO)?

No. The fastest connection is via New York, about 11h 14m of total flying time.

What is the fastest connection from Mexico City (MEX) to Porto (OPO)?

via New York ≈ 11h 14m, via Newark ≈ 11h 14m, via Boston ≈ 11h 15m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Mexico City Benito Juárez International Airport (MEX) to Francisco de Sá Carneiro Airport (OPO)・8,630 km

No nonstop flights. The fastest connection is via New York (JFK), about 11h 14m of flying time (layover not included).

With milesANA 27,500 miles+ (via EWR)JAL 37,000 miles+ (via MAD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

14 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.