Altius recorded 94 priced readings of nonstop business-class round trips from Paris (CDG) to Chicago (ORD) booked 30 days out, across 47 departure dates between 2026-08-19 and 2026-10-04. Observed fares ran from US$4,228 to US$9,618. The lowest fare Altius scored on this window was US$4,228 for a 2026-11-01 departure, seen on 2026-10-02 — IMPRESSIVE at the time, 24.7% below the US$5,615 this route was typically running that day.
Altius recorded 94 priced readings of nonstop business-class round trips from Paris (CDG) to Chicago (ORD) booked 60 days out, across 47 departure dates between 2026-08-19 and 2026-10-04. Observed fares ran from US$4,109 to US$7,172. The lowest fare Altius scored on this window was US$4,109 for a 2026-11-23 departure, seen on 2026-09-24 — DECENT at the time, 12.6% below the US$4,701 this route was typically running that day.
Altius recorded 94 priced readings of nonstop business-class round trips from Paris (CDG) to Chicago (ORD) booked 90 days out, across 47 departure dates between 2026-08-19 and 2026-10-04. Observed fares ran from US$4,151 to US$5,865. 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.