SITA OptiClimb® technology is in use by all five TUI Group airlines, advancing TUI sustainable flights.
Holiday giant TUI has fully implemented the SITA OptiClimb® solution across all five airlines to reduce carbon emissions. This announcement follows the success of TUI‘s partial deployment of the SITA technology, which saved TUI up to 200 kg of fuel and 600 kg of CO2 per aircraft per day.

SITA Opticlimb: Optimizing Fuel Burn for Greener Flights
Aircraft climb is the phase of flight that consumes the most fuel. The aviation industry has embraced SITA OptiClimb®, an advanced predictive analytics solution to address this issue. Using machine learning and tail-specific performance models, OptiClimb® offers customized climb speeds and acceleration levels for each aircraft including data from 4D weather forecasts and operational flight plan inputs. This optimization process allows airlines to reduce fuel consumption without compromising flight times.
The International Air Transport Association (IATA) states that fuel constitutes nearly 30% of an airline’s operating costs. This makes it a significant expense and a major contributor to aviation emissions. To combat these challenges, airlines are integrating digital solutions like SITA OptiClimb®. Technology works alongside other sustainability initiatives, such as adopting sustainable aviation fuels and updating their fleets.
By leveraging SITA OptiClimb®, airlines could save approximately 5.6 million tons of carbon emissions annually if universally implemented. Notably, the solution has been successfully implemented across all five TUI Group airlines. They include TUI Airways, TUI fly Belgium, TUI fly Germany, TUI fly Netherlands, and TUI fly Nordic. In 2022 alone, this deployment resulted in impressive fuel savings. In all, TUI airlines cut around 4,500 tons and 14,000 tons of carbon emissions reduction.
TUI Sustainable Flights: A Commitment to Reducing Travel Carbon Emissions
“TUI has committed to 2030 emission reduction targets for its own airlines, cruises, and hotels – emissions from TUI Airline will be reduced by 24 percent. One of the ways we aim to cut these emissions is through operational measures that improve flight planning and optimize fuel management leveraging innovative technologies like SITA OptiClimb®,” said Marco Ciomperlik, Chief Airline Officer, TUI Group.
Yann Cabaret, CEO, SITA FOR AIRCRAFT, said, “We’re delighted to continue supporting TUI Group’s sustainability agenda. Our ambition is to help the air transport industry progress faster on our shared journey to net zero and improve travel efficiency through innovation and technology.”