Altius recorded 309 priced readings of nonstop business-class round trips from New York (JFK) to Amsterdam (AMS) booked 90 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$4,000 to US$6,991. The lowest fare Altius scored on this window was US$4,000 for a 2026-12-21 departure, seen on 2026-09-22 — IMPRESSIVE at the time, 25.9% below the US$5,398 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.