Are there nonstop flights from Muscat (MCT) to London (STN)?

No. The fastest connection is via Vienna, about 7h 49m of total flying time.

What is the fastest connection from Muscat (MCT) to London (STN)?

via Vienna ≈ 7h 49m, via Dubai ≈ 7h 49m, via Prague ≈ 7h 50m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Muscat International Airport (MCT) to London Stansted Airport (STN)・5,793 km

No nonstop flights. The fastest connection is via Vienna (VIE), about 7h 49m of flying time (layover not included).

With milesJAL 23,000 miles+ (via DXB)ANA 30,000 miles+ (via IST)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

16 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.