Altius recorded 311 priced readings of nonstop business-class round trips from Miami (MIA) to Cartagena (CTG) booked 90 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$735 to US$6,143. The lowest fare Altius scored on this window was US$735 for a 2026-09-18 departure, seen on 2026-06-20 — RARE at the time, 30.5% below the US$1,058 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.