Altius recorded 94 priced readings of nonstop business-class round trips from Edinburgh (EDI) to Washington (IAD) booked 90 days out, across 43 departure dates between 2026-06-06 and 2026-07-18. Observed fares ran from US$3,764 to US$15,885. The lowest fare Altius scored on this window was US$3,764 for a 2026-10-12 departure, seen on 2026-07-14 — LEGENDARY at the time, 64% below the US$10,456 this route was typically running that day. Altius has not seen a nonstop business-class round trip on this route since 2026-07-18. The record above is what was observed while fares were being returned. Routes drop out of schedules and come back, so it is worth checking again.
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.