A return flight to New York from York

[jamie]

2,257.0 kg CO2e     Return distance 10750km at 210 gm CO2 per km     (Leeds/Bradford to New York and back)       See http://www.greenrationbook.org.uk/smf/index.php?topic=56.0     ("Carbon Dioxide from Passenger Transport" in "Footprint studies and footprint theory")

[plainer]

George Monbiot says : "London to New York, every passenger produces roughly 1.2 tonnes of carbon dioxide: the very quantity we will each be entitled to emit in a year once the necessary cut in emissions has been made."

(http://www.guardian.co.uk/environment/2006/sep/21/travelsenvironmentalimpact.ethicalliving)

So a return flight is 2.4 tonnes, which is pretty close to this figure.