Altius recorded 251 priced readings of nonstop business-class round trips from Dallas (DFW) to Helsinki (HEL) booked 30 days out, across 124 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$4,891 to US$10,433. The lowest fare Altius scored on this window was US$4,891 for a 2026-10-20 departure, seen on 2026-09-20 — STRONG at the time, 21.2% below the US$6,207 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.