Sabre

From a 1958 Pentagon contract system to Voyager's 68KB computer, some software refuses to die. What's the oldest code still in production?

PNRs, e-ticket numbers, and the name match that decides if you fly. Here's how airline booking records actually work.

Ever wondered why that flight vanished while booking? Explore the 1960s mainframes and cryptic protocols holding the travel industry together.

Discover the invisible borders of the sky, from the physics of the Karman Line to the hidden fees airlines pay to cross national airspace.