Are there nonstop flights from Sapporo (CTS) to Nha Trang (CXR)?

No. The fastest connection is via Taipei, about 6h 27m of total flying time.

What is the fastest connection from Sapporo (CTS) to Nha Trang (CXR)?

via Taipei ≈ 6h 27m, via Busan ≈ 6h 28m, via Daegu ≈ 6h 29m (estimated flying time, excluding layovers).

from 19,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

New Chitose Airport (CTS) to Cam Ranh International Airport / Cam Ranh Air Base (CXR)・4,634 km

No nonstop flights. The fastest connection is via Taipei (TPE), about 6h 27m of flying time (layover not included).

With milesANA 19,000 miles+ (via ICN)JAL 23,000 miles+ (via ICN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.