Altius recorded 231 priced readings of nonstop business-class round trips from Chicago (ORD) to Barcelona (BCN) booked 90 days out, across 98 departure dates between 2026-05-20 and 2026-08-26. Observed fares ran from US$4,380 to US$13,125. The lowest fare Altius scored on this window was US$4,380 for a 2026-11-09 departure, seen on 2026-08-11 — RARE at the time, 34.5% below the US$6,687 this route was typically running that day. Altius has not seen a nonstop business-class round trip on this route since 2026-08-26. The record above is what was observed while fares were being returned. Routes drop out of schedules and come back, so it is worth checking again.
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.