Are there nonstop flights from Las Vegas (LAS) to Porto (OPO)?

No. The fastest connection is via Montréal, about 11h 17m of total flying time.

What is the fastest connection from Las Vegas (LAS) to Porto (OPO)?

via Montréal ≈ 11h 17m, via Toronto ≈ 11h 18m, via Boston ≈ 11h 26m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Harry Reid International Airport (LAS) to Francisco de Sá Carneiro Airport (OPO)・8,620 km

No nonstop flights. The fastest connection is via Montréal (YUL), about 11h 17m of flying time (layover not included).

With milesANA 27,500 miles+ (via YUL)JAL 45,000 miles+ (via CDG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

11 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.