Chicago to Reykjavík — what Altius has recorded

Altius recorded 274 priced readings of nonstop business-class round trips from Chicago (ORD) to Reykjavík (KEF) booked 60 days out, across 127 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$1,498 to US$9,110. The lowest fare Altius scored on this window was US$1,498 for a 2026-11-18 departure, seen on 2026-09-19 — RARE at the time, 36% below the US$2,341 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.