Right now, there’s two test airlines in the game, correctly identifies as Stripe Air and CLM.
We can tailor and customize the preferences of the airlines as much as we want, adding specific aircraft models to an airlines fleet would be very easy and is something we’ll do. I’m pretty sure we’ve talked about this before but airlines will initially come in three different shapes: Small, medium and big (later probably expanded to exclusive and freight as well). Airlines have a bunch of variables that state their requirements, their fees, number of flights, routes, maximum turnaround time and stuff like that. This is where we’ll add what kinds of aircraft they operate as well, and since we have a pretty nice livery system going, each aircraft will have a different livery depending on which airline its trafficking for.
There’s no limit in how many airlines that can exist and we have a bunch of different ways planned for how users can affect what airlines will be in a vanilla Airport CEO. All data about airlines will most likely be stored in separate .json-files, but we can’t confirm this fully yet (still exploring solutions).