This scatter plot displays the total number of US airline flights per month from 2003 to 2019, with each circle colored by its month. The visualization uses D3.js to map the year and flight count onto x and y axes, respectively, while a paired color scheme distinguishes the twelve months. Data comes from the US Airline Traffic dataset, rendered with semi-transparent circles to reveal overlapping points. The code leverages D3's `scaleLinear`, `scaleOrdinal`, and `schemePaired` for scaling and coloring, with axis labels added via the `@curran/axis-labels` library.