Are there nonstop flights from Rhodes (RHO) to Stuttgart (STR)?

Yes. Eurowings, TUI fly Deutschland fly this route. Flight time is about 2h 55m.

What is the fastest connection from Rhodes (RHO) to Stuttgart (STR)?

via Thessaloniki ≈ 3h 25m, via Kos ≈ 3h 25m, via Tirana ≈ 3h 25m (estimated flying time, excluding layovers).

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

Rhodes International Airport "Diagoras" (RHO) to Stuttgart Airport (STR)・2,052 km

Nonstop flights available (2 airlines). Flight time about 2h 55m. Nonstop return flights also operate.

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

44 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.