Altius recorded 308 priced readings of nonstop business-class round trips from Atlanta (ATL) to San José (SJO) booked 30 days out, across 138 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$1,635 to US$3,628. The lowest fare Altius scored on this window was US$1,635 for a 2026-08-28 departure, seen on 2026-07-29 — IMPRESSIVE at the time, 22.7% below the US$2,115 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.