Altius recorded 309 priced readings of nonstop business-class round trips from Atlanta (ATL) to Barcelona (BCN) booked 60 days out, across 137 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$4,130 to US$15,115. The lowest fare Altius scored on this window was US$4,130 for a 2026-12-02 departure, seen on 2026-10-03 — LEGENDARY at the time, 49.2% below the US$8,130 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.