Altius recorded 302 priced readings of nonstop business-class round trips from Washington (IAD) to Tokyo (HND) booked 30 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$6,652 to US$15,117. The lowest fare Altius scored on this window was US$7,664 for a 2026-08-23 departure, seen on 2026-07-24 — IMPRESSIVE at the time, 27.4% below the US$10,556 this route was typically running that day.
Altius recorded 309 priced readings of nonstop business-class round trips from Washington (IAD) to Tokyo (HND) booked 60 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. 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.
Altius recorded 306 priced readings of nonstop business-class round trips from Washington (IAD) to Tokyo (HND) booked 90 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$6,112 to US$11,330. The lowest fare Altius scored on this window was US$6,112 for a 2026-11-30 departure, seen on 2026-09-01 — STRONG at the time, 16.4% below the US$7,311 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.