Altius recorded 210 priced readings of nonstop business-class round trips from Frankfurt (FRA) to Houston (IAH) booked 30 days out, across 106 departure dates between 2026-06-21 and 2026-10-04. Observed fares ran from US$5,201 to US$9,477. Every fare Altius recorded for trips booked 30 days out stayed close enough to what this route typically costs that none was flagged.
Altius recorded 211 priced readings of nonstop business-class round trips from Frankfurt (FRA) to Houston (IAH) booked 60 days out, across 106 departure dates between 2026-06-21 and 2026-10-04. Observed fares ran from US$4,004 to US$9,262. The lowest fare Altius scored on this window was US$4,004 for a 2026-11-22 departure, seen on 2026-09-23 — STRONG at the time, 20.8% below the US$5,056 this route was typically running that day.
Altius recorded 210 priced readings of nonstop business-class round trips from Frankfurt (FRA) to Houston (IAH) booked 90 days out, across 106 departure dates between 2026-06-21 and 2026-10-04. Observed fares ran from US$4,004 to US$8,099. The lowest fare Altius scored on this window was US$4,004 for a 2026-12-22 departure, seen on 2026-09-23 — STRONG at the time, 16.2% below the US$4,778 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.