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by travelgreen



Written by Théo, Valentin
Publication date: 10 Feb 2025

2024 Most Sustainable Long-Haul Planes(1)

Based on official aircraft consumption


Publication date:

10 Feb 2025

2024 Most Sustainable Long-Haul Planes(1)

Based on official aircraft consumption


98g of CO₂ per passenger per km (3)

Why it’s good:

  • New Rolls-Royce Trent XWB engines consume 25% less fuel than older models.[1]
  • Made from lightweight composite materials and titanium, reducing fuel burn.[2]
  • Advanced aerodynamics improve efficiency.[2]

108 g of CO₂ per passenger per km (3)

Why it’s good:

  • More efficient and newer version of the A330, with new engines & wing improvements[4]
  • 25% lower fuel burn compared to older models[3]

114 g of CO₂ per passenger per km (3)

Why it’s good:

  • Built with carbon-fiber composites, making it lighter. [5]
  • 15% improvement in specific fuel consumption compared to older engines. [6]
  • Advanced aerodynamics improve efficiency. [7]
(1) Long-Haul defined as 4,500 km or further
(2) Average seats
(3) Average calculated from our database of 1 million flights between 2021 and 2024.




Why Aircraft Choice Matters for Emissions?

  • Sustainability in aviation is more important than ever. While airlines focus on Sustainable Aviation Fuel (SAF) and carbon offsets, the aircraft itself is one of the biggest factors in reducing emissions
  • Flying will always have an environmental impact . But choosing the right aircraft can reduce emissions by up to 40%!
  • Analyzing data from over 1 million flights between 2021 and 2024, with precise CO2 calculations based on ICAO’s methodology, we’ve identified the most fuel-efficient long-haul aircrafts for early 2025.




Try it yourself for a precise calculation Try it yourself

References

  1. Rolls-Royce Trent XWB Engine specs
  2. Airbus A350-900 Official Page
  3. Airbus A330-900neo Official Page
  4. Rolls Royce Trent 7000 specs
  5. Boeing 787 - IQ 2024 Q3
  6. General Electric GEnx engines
  7. Boeing 787-9 specs