Cute little game! Had trouble keeping track of where all the airports were, and I want to say one time, one of them may not have even been on the map (although it could've also just been me not looking hard enough). I also didn't realize the game ended when two planes crashed into each other until I saw it happen, maybe having the camera zoom to the event when it happens, or a sound que would help with that.
I like the concept though! Good work!