Environmental sustainability
Our aspiration is to advance sustainability initiatives in aviation.Footnote 1
Key highlights
100%increase in SAF usage from 2024 to 2025
1stU.S. passenger airline to use SAF blend at EWR and IADFootnote 2
LeadershipNamed a Forbes Net Zero Leader and among Newsweek’s Most Responsible Companies
Environmental sustainability topics in this section:
Footnotes
- “The Future is SAF” reflects United's belief that SAF is the most promising technology solution to reduce our carbon emissions and will be a critical component in meeting our climate ambitions. However, SAF is only used at specific airports and is not used on all flights. SAF is less than 1% of the United overall fuel use. SAF must be blended with conventional fuel in accordance with regulatory requirements. Use of blended SAF results in lower carbon emissions on a lifecycle basis than conventional fuel alone but still results in emissions.
- Based on U.S. network carrier public announcements of SAF used in 2025. SAF is approximately 0.7% of United’s overall fuel use. SAF must be blended with conventional fuel in accordance with blending requirements. Use of blended SAF results in lower carbon emissions on a lifecycle basis than conventional fuel alone.