Altius recorded 32 priced readings of nonstop business-class round trips from San Francisco (SFO) to Madrid (MAD) booked 30 days out, across 29 departure dates between 2026-06-29 and 2026-08-09. Observed fares ran from US$4,595 to US$15,811. The lowest fare Altius scored on this window was US$4,595 for a 2026-08-10 departure, seen on 2026-07-11 — IMPRESSIVE at the time, 23.7% below the US$6,022 this route was typically running that day. Altius has not seen a nonstop business-class round trip on this route since 2026-08-09. 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.