Hi bbw16, as what GoGreen mentioned, your current airport is actually quiet good. It is hard to get a really good airport now in the game. For those routes with around 100 pax demand, you can fly ATR42 or Saab2000. These aircraft of around 50 seat allow you to raise your price higher than the system default without affecting your LF. I tried that before, even though I don't know how it work. BAE will be more suitable for higher demand route, but, don't use them for routes or longer distance. They are perfect for high demand routes within 500nm. Yo can also try Fokker70/1000.