There's something a little off about the projection logic when you drop into the Leaflet view, you'll notice that when you pan around after zooming the planes shift their location.
When you zoom in to the street map level, the planes are practically invisible with their color and thin borders. Pretty neat though, that's a lot to load and keep smooth.
Ok, I'm on desktop now. And I notice another "issue". When I use my mouse wheel to zoom, the point that my mouse cursor is on is not stationary. This makes it hard to zoom in on e.g. a specific aircraft or landmark.
Good work.
Very cool demo though!
It really puts into perspective the magnitude of air traffic when you have this visualization.
I'm surprised all the flights in the world can be represented in a <500KB api call
window.addEventListener('wheel', ... )
Fantastic work!