Which airline made history in 2021 by operating the first commercial flight using 100% sustainable aviation fuel (SAF) in one of its engines?

The transportation industry, especially aviation, has faced increasing pressure to reduce its environmental impact. In recent years, major airlines have launched various sustainability initiatives to address their carbon footprint and move toward greener operations. This trivia question focuses on a groundbreaking sustainability milestone in commercial aviation that marked a significant step toward more environmentally responsible air travel. Test your knowledge of how the aviation sector is transforming its approach to sustainability.

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United Airlines
Delta Air Lines
British Airways
Emirates