Altius recorded 156 priced readings of nonstop business-class round trips from Atlanta (ATL) to Buenos Aires (EZE) booked 30 days out, across 79 departure dates between 2026-06-29 and 2026-09-17. Observed fares ran from US$4,693 to US$12,653. The lowest fare Altius scored on this window was US$5,253 for a 2026-09-22 departure, seen on 2026-08-23 — DECENT at the time, 14.6% below the US$6,151 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.