For those who fly, flights tend to be the largest part of their carbon footprint. This is because we usually travel long distances when we do fly.
Quick Tips: You can enter IATA codes to quickly find an airport name - the code will be printed on your ticket, or you can check this list.
You can calculate up to 10 flights at a time - either individual trips, or the legs of a long-haul flight. For a long-haul flight set each leg to "Single".