Altius recorded 308 priced readings of nonstop business-class round trips from Atlanta (ATL) to Rome (FCO) booked 60 days out, across 138 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,101 to US$16,351. The lowest fare Altius scored on this window was US$4,101 for a 2026-11-26 departure, seen on 2026-09-27 — LEGENDARY at the time, 50.7% below the US$8,318 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.