Are there nonstop flights from Mashhad (MHD) to London (LHR)?

No. The fastest connection is via Baku, about 6h 50m of total flying time.

What is the fastest connection from Mashhad (MHD) to London (LHR)?

via Baku ≈ 6h 50m, via Istanbul ≈ 7h 8m, via Beirut ≈ 7h 42m (estimated flying time, excluding layovers).

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

Mashhad International Airport (MHD) to London Heathrow Airport (LHR)・4,952 km

No nonstop flights. The fastest connection is via Baku (GYD), about 6h 50m of flying time (layover not included).

With milesJAL 37,000 miles+ (via DOH)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.