Altius recorded 310 priced readings of nonstop business-class round trips from Washington (IAD) to Tokyo (HND) booked 60 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$6,152 to US$12,860. The lowest fare Altius scored on this window was US$6,152 for a 2026-07-27 departure, seen on 2026-05-28 — DECENT at the time, 10.4% below the US$6,866 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.