• Total fuel consumption: 1.26 million metric tonnes (2008)
• Fuel consumption per 100 passenger-kilometres: 3.85 litres (2008)
  
  

• Total CO2 emissions: 3.96 million metric tonnes
  New calculation method introduced in 2008 and applied retroactively to 2007. Figures have thus changed slightly compared to earlier figures.
• CO2 emissions per passenger-kilometre (2008): 97 g
  
  
Global aviation
• Aviation's share of global CO2 emissions: 2.2 percent¹
• Aviation's share of global greenhouse gas emissions²: 1.6 percent³
• Aviation's share of the entire transport sector's global CO2 emissions: 13 percent ⁴

• Average age of the SWISS fleet (as of 31 Dec. 2008): 10.3 years

Ever quieter
• Aircraft noise emissions: All SWISS aircraft produce at least 10 percent less noise than the ICAO's latest limit (Chapter 4)
• Noise emissions at Zurich Airport: Around two-thirds of the area heavily affected by noise around Zurich Airport has been eliminated in the past 20 years – despite an increase of roughly 50 percent in the number of aircraft movements
• SWISS has ordered regional aircraft (to be put into service starting in 2014) that are 15-20 dB quieter than today's Avro RJ100
  

¹ Source: IATA
² The Kyoto Protocol classifies the following as greenhouse gases: CO2, CH4, N2O, HFCs, PFCs, SF6
³ Source: www.wri.org
⁴ Source: IPCC