Altius recorded 171 priced readings of nonstop business-class round trips from Frankfurt (FRA) to Seattle (SEA) booked 90 days out, across 86 departure dates between 2026-06-21 and 2026-10-04. Observed fares ran from US$2,780 to US$9,113. The lowest fare Altius scored on this window was US$2,780 for a 2026-11-09 departure, seen on 2026-08-11 — RARE at the time, 34.5% below the US$4,244 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.