Altius recorded 112 priced readings of nonstop business-class round trips from Frankfurt (FRA) to Philadelphia (PHL) booked 60 days out, across 57 departure dates between 2026-06-21 and 2026-10-04. Observed fares ran from US$3,187 to US$4,944. The lowest fare Altius scored on this window was US$3,275 for a 2026-12-01 departure, seen on 2026-10-02 — DECENT at the time, 12.2% below the US$3,730 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.