Offsetting is seen as a mechanism that can contribute to curb the growing emissions from the aviation sector. This report investigates the way air carriers currently engage in offsetting, with a focus on the offset project types, credits, and entities involved. It consolidates evidence of offsetting practices from over 30 air carriers. The report is available for download.

Given that airlines will need to offset their greenhouse gas emissions via a market-based mechanism recently decided by the International Civil Aviation Organisation (ICAO), this report evaluates the current carbon offsetting programs of major airlines. These are mainly voluntary, offered to airlines' customers. The structure of such programs, as well as the types of offsets offered, give an indication of airlines' existing involvement with offset projects and carbon markets ahead of that involvement becoming mandatory.