Altius recorded 305 priced readings of nonstop business-class round trips from Chicago (ORD) to Paris (CDG) booked 30 days out, across 136 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$3,864 to US$16,075. The lowest fare Altius scored on this window was US$3,864 for a 2026-08-26 departure, seen on 2026-07-27 — DECENT at the time, 11.9% below the US$4,386 this route was typically running that day.
Altius recorded 306 priced readings of nonstop business-class round trips from Chicago (ORD) to Paris (CDG) booked 60 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$3,272 to US$9,517. The lowest fare Altius scored on this window was US$3,272 for a 2026-11-17 departure, seen on 2026-09-18 — RARE at the time, 39% below the US$5,364 this route was typically running that day.
Altius recorded 306 priced readings of nonstop business-class round trips from Chicago (ORD) to Paris (CDG) booked 90 days out, across 137 departure dates between 2026-05-20 and 2026-10-04. Observed fares ran from US$3,269 to US$9,158. The lowest fare Altius scored on this window was US$3,269 for a 2026-11-17 departure, seen on 2026-08-19 — RARE at the time, 35.2% below the US$5,045 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.