Carbon offset is a mechanism in which carbon credits are used to fund internationally-certified carbon reduction programs. These programs offset unavoidable carbon emissions. Carbon offsets are one of the leading international methods of resisting climate change, and are endorsed by the United Nations. After a carbon-reduction program is certified by an independent global organization, every ton of carbon reduction results in a carbon credit. Once a carbon credit is purchased, it is deleted from the original holder’s balance, so it cannot be redundantly used. In other words, offsetting one ton of carbon emissions means a reduction of one ton of carbon emissions into the atmosphere. Carbon reduction has to be carried out through specific programs, such as reducing fossil fuels by substituting clean energy instead.

Based on guidelines provided by the International Civil Aviation Organization (ICAO) and the International Air Transport Association (IATA), we use EVA Air fuel consumption rates and passenger statistics to calculate emissions per passenger kilometer. Depending on your seating class, route, and number of people in your party, we calculate your carbon emissions. For route information, we use the route’s minimum distance (great-circle distance) for calculations. If you’d like to understand more about how we calculate emissions figures, please see the ICAO’s Carbon Calculator and the IATA's Passenger CO2 Standard Methodology.