Behind every airline ticket you purchase lies a complex world of fare filing. Most travelers don’t think twice about how their flight price is calculated or why certain fees appear on their ticket. But the truth is, every fare, surcharge, and route combination is meticulously crafted, governed by a system of rules and regulations that airlines must adhere to. And at the center of this complex network is ATPCO, the silent engine that powers the entire process. Did you know tha