Also a travel industry programmer. Same feelings about for how much longer, heh. > If you book through the airline's systems or on online reservation systems t

Also a travel industry programmer. Same feelings about for how much longer, heh. > If you book through the airline's systems or on online reservation systems they likely use the airline's systems to track travel instead of GDS since the GDS wants to take a big cut of every ticket sale. But in my experience, the airline backend and pricing is usually outsourced to Sabre or Amadeus. Frontier and Southwest are the only big players I know of that handle that sort of thing themselves, and Frontier has a teeny-tiny routelist compared to the others.