SWISS has been pursuing eco-friendly corporate policies for years. It has responded to the threat of climate change with a raft of initiatives to reduce fuel consumption and thus CO2 emissions. Its efforts have paid off: In 2002, the SWISS fleet consumed 4.5 litres of jet fuel for every 100 passenger-kilometres; by 2008, it was only using 3.85 litres.

Environmental investments go hand in hand with economic interests.  Especially since jet fuel prices have more than doubled between 2004 and 2008. Fuel costs currently account for approximately 30 percent of SWISS's total expenses, making it the company's single largest expense item.

The CO2 reduction initiatives are based on the "four thrusts" strategy developed by the international aviation industry:

1. Technological advances
SWISS applies the latest technological innovations in fuselage design, aerodynamics, materials, engines, electronics, etc. to its own fleet wherever possible. This reduces fuel consumption and CO2 emissions.

2. Operating measures
Flying direct routes, optimising fuel weight and following economical flight procedures can significantly reduce fuel burn.

3. Infrastructural efficiencies
SWISS is a vocal advocate for the Single European Sky initiative and for the maintenance of ideal operating conditions at airports, particularly at its hub, Zurich Airport.

4. Economic tools
SWISS enables its passengers to voluntarily offset the CO2 emissions from their flight. It supports the IATA in developing a proposal for a global, efficient, non-discriminatory emissions trading system to be presented at the UN Climate Change Conference in Copenhagen in December 2009.