Delta Air Lines will install Vortex Control Technologies’ (VCT) Finlet modification package across its Boeing 737-800 and 737-900ER fleet, covering 240 aircraft.
Finlets are aerodynamic devices fitted to the aft fuselage that optimise airflow, reduce drag and improve fuel efficiency. By minimising flow separation and enhancing pressure distribution, the technology lowers fuel burn and cuts carbon emissions.
Delta’s decision follows an extensive evaluation programme, including flight testing, operational analysis and computational fluid dynamics (CFD) assessments of its 737NG fleet. The airline concluded that the modification offers a practical way to improve aircraft performance while supporting long-term efficiency goals.
Gil Morgan, Chief Executive Officer of VCT, said the deployment marks a major milestone for the company, highlighting the technology’s ability to improve fuel efficiency, reduce emissions and strengthen airline operating economics.
The initiative supports Delta’s broader sustainability strategy. With around 90% of the airline’s carbon emissions linked to jet fuel consumption, efficiency upgrades such as Finlets are expected to play an important role in reducing environmental impact while enhancing operational performance.
