Altius recorded 307 priced readings of nonstop business-class round trips from San Francisco (SFO) to Taipei (TPE) booked 30 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$4,339 to US$8,220. The lowest fare Altius scored on this window was US$4,339 for a 2026-08-10 departure, seen on 2026-07-11 — STRONG at the time, 15.8% below the US$5,153 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.