The carbon footprint of a Miami to New York flight is around 1,525lb, which may vary slightly based on airline and stops. There is a CO2 sorter on our flight search results to help you select the lowest possible footprint. In comparison, the carbon footprint to travel by train for this trip is 229lb. Although it takes longer, opting for a bus over an airplane would reduce the carbon footprint of your trip to about 144lb.