![The study conducted by the University of Cambridge concluded that reducing flight speed by around 15% could decrease fuel burn by 5 to 7%. In real-world terms, this would mean an increase of around 50 minutes to a transatlantic flight.](https://fortune.com/img-assets/wp-content/uploads/2025/02/GettyImages-2177456939-1-e1738682077574.jpg?w=1440&q=75)
The study conducted by the University of Cambridge concluded that reducing flight speed by around 15% could decrease fuel burn by 5 to 7%. In real-world terms, this would mean an increase of around 50 minutes to a transatlantic flight.
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