Are there nonstop flights from Portland (PDX) to London (LGW)?

No. The fastest connection is via Reykjavík, about 10h 20m of total flying time.

What is the fastest connection from Portland (PDX) to London (LGW)?

via Reykjavík ≈ 10h 20m, via Vancouver ≈ 10h 26m, via Amsterdam ≈ 10h 53m (estimated flying time, excluding layovers).

from 40,000 JAL miles (economy, one way, based on the published award charts).

Portland International Airport (PDX) to London Gatwick Airport (LGW)・7,926 km

No nonstop flights. The fastest connection is via Reykjavík (KEF), about 10h 20m of flying time (layover not included).

With milesJAL 40,000 miles+ (via YVR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

8 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.