Are there nonstop flights from Amarillo (AMA) to London (LHR)?

No. The fastest connection is via Denver, about 10h 30m of total flying time.

What is the fastest connection from Amarillo (AMA) to London (LHR)?

via Denver ≈ 10h 30m, via Dallas-Fort Worth ≈ 10h 33m, via Austin ≈ 11h 5m (estimated flying time, excluding layovers).

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

Rick Husband Amarillo International Airport (AMA) to London Heathrow Airport (LHR)・7,717 km

No nonstop flights. The fastest connection is via Denver (DEN), about 10h 30m of flying time (layover not included).

With milesJAL 37,000 miles+ (via DFW)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

5 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.