Altius recorded 259 priced readings of nonstop business-class round trips from New York (JFK) to Brussels (BRU) booked 90 days out, across 113 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,002 to US$12,966. The lowest fare Altius scored on this window was US$4,002 for a 2026-12-03 departure, seen on 2026-09-04 — RARE at the time, 34.7% below the US$6,129 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.