Are there nonstop flights from London (LCY) to Miami (MIA)?

No. The fastest connection is via Dublin, about 9h 26m of total flying time.

What is the fastest connection from London (LCY) to Miami (MIA)?

via Dublin ≈ 9h 26m, via Amsterdam ≈ 10h 9m, via Madrid ≈ 10h 51m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 40,000 JAL miles (economy, one way, based on the published award charts).

London City Airport (LCY) to Miami International Airport (MIA)・7,143 km

No nonstop flights. The fastest connection is via Dublin (DUB), about 9h 26m of flying time (layover not included).

With milesANA 27,500 miles+ (via ZRH)JAL 40,000 miles+ (via MAD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.