Are there nonstop flights from Islamabad (ISB) to London (LHR)?

Yes. Pakistan International Airlines fly this route. Flight time is about 7h 37m.

What is the fastest connection from Islamabad (ISB) to London (LHR)?

via Baku ≈ 8h 14m, via Tashkent ≈ 8h 15m, via Paris ≈ 8h 21m (estimated flying time, excluding layovers).

from 29,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Islamabad International Airport (ISB) to London Heathrow Airport (LHR)・6,053 km

Nonstop flights available (1 airline). Flight time about 7h 37m. Nonstop return flights also operate.

With milesANA 29,500 miles+ (via IST)JAL 37,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

17 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.