21 Jul 2025 — 18 min read Airline pricing may seem mystifying, but behind every airfare is a complex system of fare buckets and inventory controls. Airlines don't just sell seats - they manage a dynamic inventory of fares, divided into booking classes (fare buckets) with different prices and rules. For the technically curious, understanding how fare buckets work reveals the "source code" of airline revenue management. This report delves into the hierarchy of booking classes, how airlines update ...