Altius recorded 26 priced readings of nonstop business-class round trips from Rome (FCO) to Mexico City (MEX) booked 90 days out, across 13 departure dates between 2026-08-21 and 2026-10-02. Observed fares ran from US$2,779 to US$6,693. The lowest fare Altius scored on this window was US$2,779 for a 2026-12-31 departure, seen on 2026-10-02 — RARE at the time, 37.8% below the US$4,468 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.