Altius recorded 245 priced readings of nonstop business-class round trips from London (LHR) to Phoenix (PHX) booked 30 days out, across 121 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$6,875 to US$19,184. The lowest fare Altius scored on this window was US$7,011 for a 2026-08-27 departure, seen on 2026-07-28 — DECENT at the time, 13.5% below the US$8,105 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.