The purpose of this legislation, known as the "Farm to Fly Act of 2025," is to update existing laws regarding biofuels and specifically to include sustainable aviation fuels. The act aims to enhance access to these fuels through programs managed by the Department of Agriculture. It seeks to promote clean energy sources, support U.S. agriculture, and expand the fuel supply for the aviation industry. Key provisions of the act include a new definition for sustainable aviation fuel, which specifies that it must meet certain standards and be produced from specific feedstocks.