Altius recorded 309 priced readings of nonstop business-class round trips from Dallas (DFW) to Seoul (ICN) booked 30 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$5,537 to US$20,303. The lowest fare Altius scored on this window was US$5,537 for a 2026-07-16 departure, seen on 2026-06-16 — STRONG at the time, 20.6% below the US$6,974 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.