JetBlue continues its commitment to sustainability by announcing Monday the airline plans to offset carbon dioxide emissions from fuel for all domestic flights beginning in July 2020.

The commitment to offsetting carbon emissions makes JetBlue the first major U.S. airline to take this critical step toward reducing its contribution to global warming. In addition, the carrier will begin using sustainable fuel in mid-2020 on flights from San Francisco International Airport.

The changes also build on JetBlue’s existing programs, such as investments in fuel-saving technologies and aircraft, as well as advocating for a more fuel-efficient air traffic control system that would reduce emissions from flying.