Altius recorded 248 priced readings of nonstop business-class round trips from London (LHR) to Istanbul (IST) booked 30 days out, across 120 departure dates between 2026-06-06 and 2026-10-04. Observed fares ran from US$855 to US$1,692. The lowest fare Altius scored on this window was US$855 for a 2026-09-26 departure, seen on 2026-08-27 — IMPRESSIVE at the time, 28% below the US$1,188 this route was typically running that day.
Altius recorded 247 priced readings of nonstop business-class round trips from London (LHR) to Istanbul (IST) booked 60 days out, across 120 departure dates between 2026-06-06 and 2026-10-04. Observed fares ran from US$636 to US$1,722. The lowest fare Altius scored on this window was US$636 for a 2026-11-23 departure, seen on 2026-09-24 — RARE at the time, 34% below the US$964 this route was typically running that day.
Altius recorded 250 priced readings of nonstop business-class round trips from London (LHR) to Istanbul (IST) booked 90 days out, across 121 departure dates between 2026-06-06 and 2026-10-04. Observed fares ran from US$631 to US$1,587. The lowest fare Altius scored on this window was US$649 for a 2026-12-01 departure, seen on 2026-09-02 — STRONG at the time, 21.7% below the US$829 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.