Altius recorded 249 priced readings of nonstop business-class round trips from London (LHR) to Phoenix (PHX) booked 60 days out, across 121 departure dates between 2026-06-06 and 2026-10-04. Observed fares ran from US$5,504 to US$15,010. The lowest fare Altius scored on this window was US$5,504 for a 2026-11-18 departure, seen on 2026-09-19 — IMPRESSIVE at the time, 25.6% below the US$7,398 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.