Altius recorded 310 priced readings of nonstop business-class round trips from New York (JFK) to Seoul (ICN) booked 30 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$5,369 to US$9,354. The lowest fare Altius scored on this window was US$5,369 for a 2026-09-03 departure, seen on 2026-08-04 — DECENT at the time, 14.5% below the US$6,280 this route was typically running that day.
Altius recorded 307 priced readings of nonstop business-class round trips from New York (JFK) to Seoul (ICN) booked 60 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$4,656 to US$7,541. The lowest fare Altius scored on this window was US$4,656 for a 2026-07-27 departure, seen on 2026-05-28 — STRONG at the time, 19.1% below the US$5,755 this route was typically running that day.
Altius recorded 309 priced readings of nonstop business-class round trips from New York (JFK) to Seoul (ICN) booked 90 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$5,369 to US$9,398. Every fare Altius recorded for trips booked 90 days out stayed close enough to what this route typically costs that none was flagged.
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.