Altius recorded 243 priced readings of nonstop business-class round trips from London (LHR) to San Diego (SAN) booked 60 days out, across 119 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$5,091 to US$17,697. The lowest fare Altius scored on this window was US$5,091 for a 2026-11-27 departure, seen on 2026-09-28 — RARE at the time, 33.2% below the US$7,621 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.