Altius recorded 313 priced readings of nonstop business-class round trips from Atlanta (ATL) to Istanbul (IST) booked 90 days out, across 139 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$5,541 to US$10,041. Every fare Altius recorded for trips booked 90 days out stayed close enough to what this route typically costs that none was flagged.