Not really a bug, but had no where else to put it except Airport suggestions. Let's say- Isle of Man to Liverpool. A flight with a whole lot of flights & passenger numbers IRL. The demand in game is 0, how is the demand determined? I get around 30 people with a VERY LOW PRICE and still, 2 or so people fly.-
I don't think it follow real life demand. You can see the code in GitHub to find how demand being determined.