Altius recorded 158 priced readings of nonstop business-class round trips from Atlanta (ATL) to Buenos Aires (EZE) booked 90 days out, across 79 departure dates between 2026-06-29 and 2026-10-04. Observed fares ran from US$4,013 to US$12,653. The lowest fare Altius scored on this window was US$4,013 for a 2026-09-29 departure, seen on 2026-07-01 — RARE at the time, 33.7% below the US$6,053 this route was typically running that day.
A fare can move between our two readings of the same day, most often on the days furthest below typical. Where a day's two readings differ enough to matter, the chart marks that day and both readings can be read separately.