Are there nonstop flights from Cincinnati / Covington (CVG) to Buenos Aires (EZE)?

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

What is the fastest connection from Cincinnati / Covington (CVG) to Buenos Aires (EZE)?

via Miami ≈ 11h 11m, via Atlanta ≈ 11h 12m, via Punta Cana ≈ 11h 20m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Cincinnati Northern Kentucky International Airport (CVG) to Ezeiza International Airport - Ministro Pistarini (EZE)・8,642 km

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

With milesANA 30,000 miles+ (via IAH)JAL 37,000 miles+ (via MIA)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.