Are there nonstop flights from Stuttgart (STR) to Hanoi (HAN)?

No. The fastest connection is via Munich, about 11h 17m of total flying time.

What is the fastest connection from Stuttgart (STR) to Hanoi (HAN)?

via Munich ≈ 11h 17m, via Frankfurt am Main ≈ 11h 26m, via Istanbul ≈ 11h 46m (estimated flying time, excluding layovers).

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

Stuttgart Airport (STR) to Noi Bai International Airport (HAN)・8,716 km

No nonstop flights. The fastest connection is via Munich (MUC), about 11h 17m of flying time (layover not included).

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

None.

8 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.