Altius recorded 250 priced readings of nonstop business-class round trips from London (LHR) to Denver (DEN) booked 30 days out, across 121 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$6,440 to US$9,194. Every fare Altius recorded for trips booked 30 days out stayed close enough to what this route typically costs that none was flagged.
Altius recorded 250 priced readings of nonstop business-class round trips from London (LHR) to Denver (DEN) booked 60 days out, across 121 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$4,978 to US$12,087. The lowest fare Altius scored on this window was US$4,978 for a 2026-08-27 departure, seen on 2026-06-28 — IMPRESSIVE at the time, 27.5% below the US$6,866 this route was typically running that day.
Altius recorded 251 priced readings of nonstop business-class round trips from London (LHR) to Denver (DEN) booked 90 days out, across 121 departure dates between 2026-06-06 and 2026-10-05. Observed fares ran from US$5,178 to US$7,945. The lowest fare Altius scored on this window was US$5,178 for a 2026-12-23 departure, seen on 2026-09-24 — IMPRESSIVE at the time, 26.5% below the US$7,045 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.