In 2021, the greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines amounted to metric tons of COâ‚‚e per 1,000 available seat miles (ASM). This represented a considerable decrease from the carbon emissions intensity reported 50 years earlier when this ratio almost reached *** metric tons of COâ‚‚e per 1,000 ASMs.
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Southwest Airlines. (April 21, 2022). Greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines from 1971 to 2021 (in metric tons of COâ‚‚e per 1,000 ASM) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 28, 2026, from /statistics/1029225/ghg-emissions-intensity-southwest-airlines/
Southwest Airlines. "Greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines from 1971 to 2021 (in metric tons of COâ‚‚e per 1,000 ASM)." Chart. April 21, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 28, 2026. /statistics/1029225/ghg-emissions-intensity-southwest-airlines/
Southwest Airlines. (2022). Greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines from 1971 to 2021 (in metric tons of COâ‚‚e per 1,000 ASM). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 28, 2026. /statistics/1029225/ghg-emissions-intensity-southwest-airlines/
Southwest Airlines. "Greenhouse Gas (Ghg) Emissions Intensity Ratio of Southwest Airlines from 1971 to 2021 (in Metric Tons of Coâ‚‚e per 1,000 Asm)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 21 Apr 2022, /statistics/1029225/ghg-emissions-intensity-southwest-airlines/
Southwest Airlines, Greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines from 1971 to 2021 (in metric tons of COâ‚‚e per 1,000 ASM) ÌÇÐÄÆƽâ°æ, /statistics/1029225/ghg-emissions-intensity-southwest-airlines/ (last visited July 28, 2026)
Greenhouse gas (GHG) emissions intensity ratio of Southwest Airlines from 1971 to 2021 (in metric tons of COâ‚‚e per 1,000 ASM) [Graph], Southwest Airlines, April 21, 2022. [Online]. Available: /statistics/1029225/ghg-emissions-intensity-southwest-airlines/
