Altius recorded 289 priced readings of nonstop business-class round trips from Miami (MIA) to Barcelona (BCN) booked 30 days out, across 133 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,380 to US$10,461. The lowest fare Altius scored on this window was US$4,380 for a 2026-08-09 departure, seen on 2026-07-10 — RARE at the time, 31.1% below the US$6,357 this route was typically running that day.
Altius recorded 310 priced readings of nonstop business-class round trips from Miami (MIA) to Barcelona (BCN) booked 60 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,380 to US$9,286. The lowest fare Altius scored on this window was US$4,380 for a 2026-08-15 departure, seen on 2026-06-16 — RARE at the time, 32.7% below the US$6,508 this route was typically running that day.
Altius recorded 311 priced readings of nonstop business-class round trips from Miami (MIA) to Barcelona (BCN) booked 90 days out, across 138 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,582 to US$9,060. The lowest fare Altius scored on this window was US$4,582 for a 2026-12-16 departure, seen on 2026-09-17 — IMPRESSIVE at the time, 24.4% below the US$6,061 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.