Altius recorded 247 priced readings of nonstop business-class round trips from London (LHR) to Singapore (SIN) booked 90 days out, across 121 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$4,613 to US$13,470. The lowest fare Altius scored on this window was US$4,613 for a 2026-12-25 departure, seen on 2026-09-26 — IMPRESSIVE at the time, 29.5% below the US$6,543 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.