How is the eco CO2 rating calculated?
The eco rating gives travellers an indication of the climate impact of the fight options they are viewing and recommends the most environmentally friendly option. To calculate this we have developed a calculation that weighs the various direct trips based on the fuel consumption, along with aircraft type from ICAO. This enables us to calculate which flight uses the least fuel per seat, and therefore has the highest eco rating. Although we have attempted to make this as accurate as possible, we hope that additional data (for example, seat occupancy on the aircraft) can help us refine and develop this calculation over time.
It’s not always the case, but often the most eco-friendly flight is amongst the cheaper options. The airlines that typically have the highest eco rating are those with the newest fleets, as they are more fuel efficient models. This helps the airline reduce fuel costs, and also decreases the amount of emissions released for each flight.
Generally it’s better to fly short-haul versus long-haul, but it’s also better to fly direct, as the most fuel intensive part of the journey is during take-off. Seat configuration and seat occupancy, although not currently included in our calculation, also play a role in emissions. The more seats occupied on an aircraft the lower the fuel consumption per person on the flight. Anything that can be done to reduce weight on the aircraft, e.g. by packing less luggage, can also decrease emissions.
If everyone makes small changes to their flying habits, this can reduce the environmental impact of flying. We’re providing this information to our travellers so they can make responsible choices/informed choices, should they so wish.
Which parameters are included in the calculation
- Distance travelled
- Fuel efficiency of aircraft type
- Direct routes
Impact of data quality
Our calculation is only as good as the data that we have available. As data from the industry improves, the quality of the calculation will also improve. Therefore, approximations based on the respective routes and airlines are used in some situations.
Get in touch!
We’re currently running experiments in this area and would love to know what you think. Please get in touch via the contact us link below.