Are there nonstop flights from Stuttgart (STR) to Kos (KGS)?

Yes. Eurowings, Condor Flugdienst, TUI fly Deutschland fly this route. Flight time is about 2h 48m.

What is the fastest connection from Stuttgart (STR) to Kos (KGS)?

via Thessaloniki ≈ 3h 19m, via Zagreb ≈ 3h 19m, via Munich ≈ 3h 20m (estimated flying time, excluding layovers).

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

Stuttgart Airport (STR) to Kos International Airport "Ippokratis" (KGS)・1,961 km

Nonstop flights available (3 airlines). Flight time about 2h 48m. Nonstop return flights also operate.

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

24 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.