Are there nonstop flights from Dublin (DUB) to London (LGW)?

Yes. Ryanair fly this route. Flight time is about 1h 4m.

What is the fastest connection from Dublin (DUB) to London (LGW)?

via Castletown ≈ 1h 40m, via Newquay ≈ 1h 48m, via Saint Peter Port ≈ 1h 54m (estimated flying time, excluding layovers).

from 12,000 JAL miles (economy, one way, based on the published award charts).

Dublin Airport (DUB) to London Gatwick Airport (LGW)・485 km

Nonstop flights available (1 airline). Flight time about 1h 4m. Nonstop return flights also operate.

With milesJAL 12,000 miles+ (via CDG)Economy, one way, estimate. Tap a connection for miles by cabin.

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.