Are there nonstop flights from Riyadh (RUH) to Buenos Aires (EZE)?

No. The fastest connection is via Addis Ababa, about 16h 33m of total flying time.

What is the fastest connection from Riyadh (RUH) to Buenos Aires (EZE)?

via Addis Ababa ≈ 16h 33m, via Dubai ≈ 18h 7m, via Istanbul ≈ 18h 20m (estimated flying time, excluding layovers).

from 34,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

King Khalid International Airport (RUH) to Ezeiza International Airport - Ministro Pistarini (EZE)・12,886 km

No nonstop flights. The fastest connection is via Addis Ababa (ADD), about 16h 33m of flying time (layover not included).

With milesANA 34,000 miles+ (via ADD)JAL 47,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.