Sustainable aviation is a major concern in the current world where people are constantly relying on aircraft for transporting over long distances in short amounts of time. Newer technologies are constantly being developed to enhance the aerodynamic efficiency of existing aircrafts and improve fuel conservation. Winglets are one such technology. Our research focuses on how different winglet designs affect the lift and drag characteristics of a blended-wing body aircraft whose concept is currently being researched and compared to the base model with no winglet. The models have been subjected to both computational and experimental analysis at three different velocities and six angles of attack to determine the lift and drag values resulting from various winglet configurations. The results showed that Split Fence shows the best performance in both computational and experimental analyses with an L/D of 10.608 at 5° Angle of Attack during the CFD analysis compared to 5.52 by the base model. The Spikelet and the Spike Scimitar Winglet also showed high aerodynamic efficiency. The C-Winglet however showed poorer performance compared to these winglets. The insights from this research can help optimize winglet designs and exploration in the design of BWB aircraft, leading to substantial reductions in fuel consumption and carbon emissions in the aviation industry.