Altius recorded 137 priced readings of nonstop business-class round trips from London (LHR) to Thessaloniki (SKG) booked 60 days out, across 65 departure dates between 2026-06-06 and 2026-09-07. Observed fares ran from US$673 to US$2,397. The lowest fare Altius scored on this window was US$673 for a 2026-09-21 departure, seen on 2026-07-23 — RARE at the time, 38.2% below the US$1,089 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.