Are there nonstop flights from Rotterdam (RTM) to Dubrovnik (DBV)?

Yes. Transavia fly this route. Flight time is about 2h 14m.

What is the fastest connection from Rotterdam (RTM) to Dubrovnik (DBV)?

via Split ≈ 2h 45m, via Geneva ≈ 3h, via Rome ≈ 3h 5m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

Rotterdam The Hague Airport (RTM) to Dubrovnik Ruđer Bošković Airport (DBV)・1,472 km

Nonstop flights available (1 airline). Flight time about 2h 14m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via ATH)Economy, one way, estimate. Tap a connection for miles by cabin.

7 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.