Altius recorded 249 priced readings of nonstop business-class round trips from London (LHR) to Houston (IAH) booked 30 days out, across 120 departure dates between 2026-06-06 and 2026-10-04. Observed fares ran from US$5,015 to US$11,296. The lowest fare Altius scored on this window was US$5,387 for a 2026-09-29 departure, seen on 2026-08-30 — DECENT at the time, 10.7% below the US$6,032 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.