Example: ubermajestix.com/flot/bubble
plot = $.plot($("#placeholder"), [ // data needs to be in the form [x,y,z] where z is the radius of the point { data: [[1,2,10],[4,6,8],[3,1,4]], color: '#A1FDFF', label: 'boom' } ], { series: { bubble: true, // set this to true to activate bubbles, otherwise your data will be plotted as points points: { show: true }, // bubbles will only work with point charts, the plugin will NOT attempt to bubble a bar chart lines: { show: true } // the bubble plugin supports connecting bubbles in a series with lines }, } );