Carbon Flight Calculator
Do you fly often? Now you can check your carbon footprint for flights. Its more than you might think.
There are other kinds of carbon calculators; you can find them on the web.
Some airlines are trying to reduce their carbon footprint but flying in general is likely to always be a high-carbon production activity. Flying will produce a lot of CO2.
Carbon calculators are always an estimate; there are so many factors to consider in the production of goods and the activities of any one person that an exact figure cannot be made. You can learn more about carbon footprints in the excellent Wikipedia article.