Nice! But whatever happened to "Show HN"? I see more and more people posting their own projects here (which is completely ok!) but avoiding (or unaware of?) the "Show" option.
About the game (sorry, sim) itself: it was really fun once I realized that I have to drag the airplanes to the runway threshold matching their color. You can draw a straight line from the plane to the runway, and it will land even if it has to do an instant ~360° turn directly before touching down, which is a liiiitle bit unrealistic :) Also, while landing the planes just float with constant speed right until the end of the runway and then taxi away. A nicer animation would be if they would touch down somewhere in the middle of the runway and then decelerate gradually before taxiing away. Same in reverse for take-offs.