Are there nonstop flights from London (LHR) to Najaf (NJF)?

No. The fastest connection is via Istanbul, about 5h 58m of total flying time.

What is the fastest connection from London (LHR) to Najaf (NJF)?

via Istanbul ≈ 5h 58m, via Beirut ≈ 6h 6m, via Amman ≈ 6h 16m (estimated flying time, excluding layovers).

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

London Heathrow Airport (LHR) to Al Najaf International Airport (NJF)・4,216 km

No nonstop flights. The fastest connection is via Istanbul (IST), about 5h 58m of flying time (layover not included).

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

None.

12 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.