Altius recorded 53 priced readings of nonstop business-class round trips from Rome (FCO) to Boston (BOS) booked 60 days out, across 27 departure dates between 2026-08-19 and 2026-10-05. Observed fares ran from US$3,706 to US$8,276. The lowest fare Altius scored on this window was US$3,706 for a 2026-12-02 departure, seen on 2026-10-03 — IMPRESSIVE at the time, 29.4% below the US$5,249 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.