Are there nonstop flights from Porto (OPO) to London (LHR)?

No. The fastest connection is via Bilbao, about 2h 42m of total flying time.

What is the fastest connection from Porto (OPO) to London (LHR)?

via Bilbao ≈ 2h 42m, via Paris ≈ 2h 51m, via Paris ≈ 2h 52m (estimated flying time, excluding layovers).

from 12,000 JAL miles, from 15,000 ANA miles (economy, one way, based on the published award charts).

Francisco de Sá Carneiro Airport (OPO) to London Heathrow Airport (LHR)・1,298 km

No nonstop flights. The fastest connection is via Bilbao (BIO), about 2h 42m of flying time (layover not included).

With milesJAL 12,000 miles+ (via CDG)ANA 15,000 miles+ (via BRU)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

43 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.