Are there nonstop flights from Atlanta (ATL) to Buenos Aires (AEP)?

No. The fastest connection is via Bogota, about 10h 28m of total flying time.

What is the fastest connection from Atlanta (ATL) to Buenos Aires (AEP)?

via Bogota ≈ 10h 28m, via Lima ≈ 10h 45m, via Santiago ≈ 11h 17m (estimated flying time, excluding layovers).

Hartsfield Jackson Atlanta International Airport (ATL) to Aeroparque Jorge Newbery (AEP)・8,053 km

No nonstop flights. The fastest connection is via Bogota (BOG), about 10h 28m of flying time (layover not included).

None.

5 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.