Are there nonstop flights from London (LHR) to Monterey (MRY)?

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

What is the fastest connection from London (LHR) to Monterey (MRY)?

via San Francisco ≈ 11h 17m, via Salt Lake City ≈ 11h 20m, via Seattle ≈ 11h 29m (estimated flying time, excluding layovers).

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

London Heathrow Airport (LHR) to Monterey Regional Airport (MRY)・8,687 km

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

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

None.

10 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.